Database Users

My battery saving tips (40-50h)

After many attempts, i have found the best combination of rom, radio, android, and phone settings so my hd2 t-mobile now can last 40-50 hours from single charge.
1. Energy rom without addons on home screen
http://forum.xda-developers.com/showpost.php?p=8640264&postcount=3
2. Mccm se V3.4 version for Android (with r8.5.1_eb kernel)
http://forum.xda-developers.com/showpost.php?
p=9241013&postcount=2
http://forum.xda-developers.com/showthread.php?t=787588
3. Radio 2.12.50.02_2
4. Exceller Multiple Build Loader
http://forum.xda-developers.com/showthread.php?t=737001
5. Set wm in airplane mode, and turn off auto sync, background data and location in android, brightness to minimum
6. Use wifi, gps, mobile data or bluetooth only when needed
7. Install SetCPU and use settings from tihs page
http://forum.xda-developers.com/showthread.php?t=734886
8. Use widget taskkiller every time before locking the phone.
With this settings my phone can last around 50 hours with single charge, and i use it for sending messages, calling, browsing over wifi and occasionally playing angry birds.
This represents moderate use for me, and it is enough for my daily use, but if you want something more buy spare battery
Warning: I own hd2 t-mobile version, so this combination maybe doesn't work on your phone, or maybe it's not compatible with your hd2!
Please check radio and rom compatibility before flashing!
Screenshot from my phone
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i believe you that your phone lasts more than 40 hours, but not everyone wants to disable auto sync, location and look onto such a beatiful huge screen which is almost dark
i prefer daily charge (lasts about 24h) with all the benefits which a smartphone has!
thx anyway for sharing your setup. it might help a lot of people.

Yes, but maybe someday you will find yourself on a desert island alone with your hd2, and my tips will surely be helpful to you
There is a day when we all want a little bit of extra juice

what app do you use to see how long you've had it unplugged

cb00 said:
what app do you use to see how long you've had it unplugged
Click to expand...
Click to collapse
Settings, about phone, battery usage

cb00 said:
what app do you use to see how long you've had it unplugged
Click to expand...
Click to collapse
Looks like Battery Indicator, free version available on the Market.
PS: Do you have an extended battery? (since 8.5.1_eb is for extended batteries)

No, I use 1200mah battery, hd2 stock battery.
And yes, it's battery indicator app, but it came preinstalled in my version of android.

all things that make it a smartphone, are off.
Like to buy a Ferrari but going at 20mph because otherwise it uses too much fuel....

rafpigna said:
all things that make it a smartphone, are off.
Like to buy a Ferrari but going at 20mph because otherwise it uses too much fuel....
Click to expand...
Click to collapse
+1

rafpigna said:
all things that make it a smartphone, are off.
Like to buy a Ferrari but going at 20mph because otherwise it uses too much fuel....
Click to expand...
Click to collapse
+1
We better get a nokia 5110, it lasts a week without charging. Lol.
Sent from my HD2 using XDA App

Well guys use your phone as you want, no need to be sarcastic, maybe this will help to someone!
Maybe i would use data plan as well but it is just too expensive on my network, so i use my phone diferently than you

so... sorry to possibly hijack Your thread a bit my dear OP, but can You tell me my friends, how long can Your leo survive constant net usage? my standby drain is great, however when browsing with wifi or 3g, hd2 will live for about 4 - 5 hrs at most (well... let's call it a total net usage, as I've never had time to discharge it in one go... ).
is it more or less what You get? am I overreacting a bit??

My ROM and Android Version is not the newest and I did not look of the combination I installed, so I might have a rubbish setup. But atm. I can't get over the day with browsing, lessening music, data connection and a few calls and mails. Normally I run WM at daytime and after work I switch to Android.
Do you guys get over the day with a normal usage (like 16h), or do I expect to much??

I will try and let you know ;-)
Sent from my HTC HD2 using XDA App

elvirr said:
Yes, but maybe someday you will find yourself on a desert island alone with your hd2, and my tips will surely be helpful to you
There is a day when we all want a little bit of extra juice
Click to expand...
Click to collapse
Yeah, and I bet you'll look at your Leo and wish it was an EVO so it could transform into an airplane and fly you off that island!
Sent from my HTC HD2 using XDA App

tomylee79 said:
My ROM and Android Version is not the newest and I did not look of the combination I installed, so I might have a rubbish setup. But atm. I can't get over the day with browsing, lessening music, data connection and a few calls and mails. Normally I run WM at daytime and after work I switch to Android.
Do you guys get over the day with a normal usage (like 16h), or do I expect to much??
Click to expand...
Click to collapse
well... if I use it lightly (some web browsing, quite a few calls and txts, some email, etc.) then it will even last two days (less than 1% batt usage per hour in standby), however if I'll use net heavily, gps, gaming then combined use will be only about 4 - 6 hours.
I am changing radio from 2.14 to 2.15 in about an hour to check if it's going to be any difference.
my setup is: stock wwe 1.66 rom, android rom is froyostone 3.2 sense with hastarin kernel 8.5.1 and letama's patches.
[EDIT]
to stay on topic - I have setup as above, auto brightness, data connections enabled manually when needed. with "dumb phone" usage (texting, calling, some notes, calculations, calendar use, etc.) plus some light browsing I had 50% of batt left after all day yesterday. (unplugged @7am, 50% @9pm)

tobiascrystal said:
Yeah, and I bet you'll look at your Leo and wish it was an EVO so it could transform into an airplane and fly you off that island!
Click to expand...
Click to collapse
Haha, exactly
Sent from my HTC HD2 using XDA App

i get on average 48-55 hours with out diableing background, wifi and gps on alll the time. syncs 8 diferent email accounts every hour + the gmail is pushed .
ie: i use it as a smart phone.
worst i got was about 35 hours, kids were playing angry birds non stop...

Using the latest DarkStone and Hastarin 8.5.1oldcam, having auto killing tasks that I don't use, and setCPU at 1.07 Ghz I can last all day.
My first run on Android with my HD2 battery was terrible. but the new Kernel, and using the EB autoboot made battery totally improve, but still worse than my Nexus One. I have sync, and GPS disabled, Email updates only every hour, Twitter every 2 hours. and mine usually has around 60% left after work at 6PM, and It's fully charged and gets unplugged at 9:30 every morning.. so 8 hours and it's almost halfway gone, but when I'm not at work it lasts longer, cuz at work I constantly loose 3G, and get it back and it's constantly switching. I try to set to 2G while at work if I don't need 3G.
I change it on the way home, and use it the rest of the night.. no worries for me.

Possible Solution to Battery life problems

Take this for what it is worth, it applies to my device.
I define "acceptable" battery life as I arrive home at night with > 25% battery remaining. I firmly believe that if you want to charge your smart phone once a week you need to wait for fusion batteries because current technology will just cause you to complain bitterly on-line.
That said, I had seen occasions when my battery would be hot and you could practically watch it drain. This while the phone was not in use and in good coverage area i.e. an aberration.
I read a reference a while back in a vaguely related support site talking about the phone getting stuck in USB polling mode. Honest I did! I am just completely unable to find the reference to include here.
Anyhow, as all programmers know polling is a fatally, catastrophically, horrible, thing to do; there are only a very few specific circumstances when that is an acceptable design.
So, after a fair bit of digging I found that my Glacier (rooted, stock ROM) can sometimes get itself into a USB polling mode. I theorize this is related to the mini-USB to micro-USB adapter, although it may also just be the act of plugging and unplugging it too quickly (loose connection, plug slips out of fingers etc.). But for whatever reason it appears caused by the device seeing something on the USB port but disappearing before the driver can decide what it is looking at.
Once it gets in this state the CPU clocks up to 1GHz, and goes to 100% duty cycle. And it does not move from that state. User interaction is a bit sluggish but not necessarily that noticeable.
The best solution is to toggle USB debugging off and back on. This seems to reset the driver and settle it down. I leave USB debugging on but do not believe that is causal. So if you don't use USB debugging I still believe this could apply to your device and by toggling on and back off you can probably achieve the same results. The key is to get the USB driver to reset its state.
As a pitch, the most expensive piece of software I have thus far purchased is SystemPanel. It was instrumental in figuring this out, although any task monitor, even "top" would probably help. Still SystemPanel is just so cool I have to pitch it here. (No I don't have a monetary interest, blah, blah, blah. It rocks, you'll like it. Trust me).
Anyhow, if your USB driver goes into polling mode it will fairly well wipe out a fully charged battery in 2-3 hours. And anyone is right to complain about that!
Hope this helps.
Terry

Terry,
Are you absolutely, 100% certain you are not experiencing either one of the following issues:
Issue #11126 - http://code.google.com/p/android/issues/detail?id=11126
Issue #13130 - http://code.google.com/p/android/issues/detail?id=13130, which points back here to a thread on XDA, regarding the USB Debugging workaround...
http://forum.xda-developers.com/showthread.php?t=826507
No one, has the real explanation of what causes either of these processes to run out of control. I guess that's why they're still bugs.
We all know that a phone running Froyo, that is experiencing either of these issues, will experience extremely rapid battery drain. Why it happens to some and not others, no one yet knows. Phones NOT experiencing this issue, specifically, Glaciers not experiencing this issue, regularly hit 15 hours of battery life without any form of ROM modification, hacks, SetCPU adjustments, etc. - such as me and the 5 Glaciers I currently have here and have tested numerous times...
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*3 of those are going back on Monday.
I am fortunate to never have experienced this, while my fiancee has experienced this across 3 separate MT4G's, even though I had used 2 of those phones for over a week each and never experienced either issue once. I thought I was on to something when I had her try a completely new Google account on her 3rd phone, only to see the issue arise again after about 4 days. I'll be updating the thread I started with that info.

shlongwoodian said:
Terry,
Are you absolutely, 100% certain you are not experiencing either one of the following issues:
Issue #11126 - http://code.google.com/p/android/issues/detail?id=11126
Issue #13130 - http://code.google.com/p/android/issues/detail?id=13130, which points back here to a thread on XDA, regarding the USB Debugging workaround...
http://forum.xda-developers.com/showthread.php?t=826507
Click to expand...
Click to collapse
It sounds similar but link #3 is not the one I referenced in the original post; it was not an XDA thread.
The first 2 links seem closely related to each other and likely my observation as well. I do not believe this is hardware related, nor do I believe a separate Google account will help - sorry. Of course I could easily be wrong.
Anyhow, I do have a problem that I plan to call TMOB about. It seems I cannot EVER send an MMS unless I am connected to a wifi access point. Perhaps it uses wifi perhaps that is only incidental but the correlation is 100%.
I mention that because as I was once again failing to MMS a picture today I tried to Restart. Surprisingly when the phone restarted it was in the 100% CPU utilization again. I did not research the problem as I'm familiar with the solution now. I cycled USB debugging and all was well. This was good because I wasn't home. This was surprising because no USB devices were part of this story at all (first time I've observed that scenario).
Just for clarity, I routinely get 15+ hours of life out of my device and have no complaints at all. I didn't mean to sound like I was complaining about battery life. I will mention that if you crank the brightness up to 100%, or even 80%, it does have a pretty significant impact on battery life. Moral: there are only so may electrons in those ions. Be a little circumspect where you spend them.
Anyhow, this is one more potentially useful data point in the ongoing battery saga.

I think more so, what I'm trying to do is get down to actual brass-tacks. Have you checked the list of running processes when this happens? The next time you see your battery running so low, can you launch Watchdog and take a screen shot of both your /init process and the /suspend process?
There's no "ghost in the machine" here. This isn't random. These are documented bugs that are 100% related to what you're experiencing.
It's very easy to associate events with one another. Just because it rained on Monday, doesn't mean Mondays make it rain. I'm totally not trying to be combative, but I am trying to be very specific and I am doing my best to avoid speculation.
I have a feeling if you look at either of those two processes the next time you see 100% CPU usage, you might find you're not alone. That's awesome you're getting that kind of battery life. It sounds just like my fiancee, who's getting 15 hours a day...except when /suspend runs out of control and she doesn't catch it in time.

ethutch said:
Anyhow, I do have a problem that I plan to call TMOB about. It seems I cannot EVER send an MMS unless I am connected to a wifi access point. Perhaps it uses wifi perhaps that is only incidental but the correlation is 100%.
Click to expand...
Click to collapse
Get rid of the Telkila apn if it's still on your phone. I had the same problem. There's a few threads about it around here.
Sent from my HTC Glacier using XDA App

Yet Another Battery Drain thread - Don't kill your phone - give it life!!

Welcome to YABD – Yet Another Battery Drain thread
or Everything you wanted to know about Battery Drain but was too afraid to ask about
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Corrupt media database
Explanation: thumbnails and some database's could get corrupted making the media scanner running berserk, resulting in battery drain.
Fix: Using SGS Tools, Press [Apply script] select [clean_thumb_db.txt] and execute the script, this will delete the files that might get corrupted and reboot the phone so the database files and thumbnails get recreated.
WIFI Bug
Explanation: This is a mix of bugs and wrong settings, hardcore found some leftover debug code in the driver, tc80tc80 tested different routers seeing this effected the WIFI too, other users reported that the distance to the router effects battery drain as well. On top of this there are some settings that makes the WIFI running all the time that are not easily found.
Fix #1: Check your settings,[Wireless and network] select [Wi-Fi settings] uncheck [Network notification] press the menu key and select [Advanced] in [Wi-Fi sleep policy] select [When screen turns off]
Fix #2: See if you could try your phone with another router and compare to your home router, also check your signal that you have good coverage on the WIFI.
Fix #3: Use an updated Kernel, either hardcore's or trasig's and apply the wifi-fix (wifi-driver from JPA): View attachment update-wifi-dxjpa.zip
SGS Email 2.2.1
Explanation: The new email client has a bug making it drain the battery a lot if you set it to update every x minutes or manual update instead of push (exchange accounts)
Fix #1: Setup your account to push both on peak and off-peak, if you use imap or pop you can't do anything.
Fix #2: Use another email application, K9 or Improved Email have been reported to work much better. If you remove Samsung email you might need a fix if you have applications using your camera available here:View attachment CameraappsNoEmail.zip
Battery not "calibrated" - we don't have real facts on this one yet, so consider this our best guess
Explanation: It is said that the battery looses track of it's capacity (or rather the phone does) so it needs calibration.
Fix #1: Always flash new ROM:s with full battery.
Fix #2: Follow the guide TechnicR have on recal:
· Turn phone off and charge till full
· Start recovery and wipe battery stats
· Reboot and start the phone
· Use it heavily until it turns of by itself
· Connect charger and turn on the phone and wait until fully charged
Hardcore 256Hz vs. 500 Hz
Explanation: this is the system tick in the Linux system, number of interrupts per second for timesharing, gives a smoother appearance
Fix: None needed, the difference is not noticeable in battery drain.
Battery level drop to 95-98% when disconnecting charger
Explanation: We are used to that the battery is 100% chraged when we disconnect the charger, but with 2.2.1 we gat anything from 95-98%.
Fix: Not needed, this is a change in the charging cycle to prolong the life of the battery, but please take this in consideration of reporting battery drain, start counting from the actual value and not from 100%
For more info, check under Expert witnesses in the next post.
Could someone help me to explain the following phenomens as they are mentioned in so many various ways:
3D Gallery bug
Sensor driver hangs
Auto rotate bug
Link to my current phone config and battery life:
http://forum.xda-developers.com/showpost.php?p=10521024&postcount=613
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Gathering the suspects
Let’s get rid of the “I think” “If you only do” and “I’ve heard that” and start arresting the suspects, line them up, and execute them (oops, did I say that out loud?), and put them in quarantine until further notice.
To keep this thread cleaner, we’ll only focus on 2.2.1 mainly XXJPU/X/Y and not bother with to old 2.2 ROMS
Let's end the guesswork and start a scientific approach on this, it’s ok to suspect something, but you must have some evidence.
We need repeatability on the problems, so if you did something that started to drain your battery, describe this in as much detail as possible so someone else can verify your findings.
I have gathered some suspects but now I need your help in Collecting Scientific Information (CSI) to round up more suspects or eliminating them so we might find the truth about the drainage problem.
Forensic tools:
Free/Pay, Application name + author
Both, SystemPanel by NextApp
Free, OS Monitor by eolwral
Free, Android System Info by ElectricSheep
Free, Shark for Root by Elviss Kustans (not native version)
Free, Shark Reader by Elviss Kustans
Battery Monitoring / Saving tools:
Free/Pay, Application name + author
Free, JuicePlotter by Latedroid
Free, JuiceDefender by Latedroid
Free, Battery snap by Xhelas
Free, Brightness Level by CurveFish - let you lower the brightness another 8% and give you some extra milage
Free, Screen Filter by haxor industry, reduce the brightness a lot! thanks for the tip lpy
List of suspects:
#1 SGS Email 2.2.1 sync set on every x minutes - will be charged as an environmental villain, is put in custody pending trial
#2 Battery not “calibrated”
#3 Corrupt database files for media scanner
#4 Modem version X
#5 Voodoo lagfix
#6 WIFI bug - could be organized crime here, many villains involved. hardcore has infiltrated them and so far he has put 2 of them behind bars!
#7 Non KIES updates - could Samsung original updates be better
Prosecutor’s witnesses:
For suspect #1, SGS Email 2.2.1:
http://forum.xda-developers.com/showpost.php?p=8554755&postcount=546
http://code.google.com/p/android/issues/detail?id=9307 - very strong witness
For suspect #2, Battery not calibrated:
http://forum.xda-developers.com/showthread.php?t=722862
http://forum.xda-developers.com/showpost.php?p=9075485&postcount=5653
http://forum.xda-developers.com/showpost.php?p=9149156&postcount=143
http://forum.xda-developers.com/showpost.php?p=10092321&postcount=11053
For suspect #3, Corrupt database files for media scanner
http://forum.xda-developers.com/showpost.php?p=9075485&postcount=5653
For suspect #6, WIFI bug
http://forum.xda-developers.com/showpost.php?p=10038645&postcount=29
http://forum.xda-developers.com/showpost.php?p=10042758&postcount=6627 - hardcore found some leftover code in WIFI driver
http://forum.xda-developers.com/showthread.php?t=873779 - tc80tc80 tested different wifi routers with scary result!
For suspect #7, Non KIES updates
http://forum.xda-developers.com/showpost.php?p=10057892&postcount=69
http://forum.xda-developers.com/showpost.php?p=10061398&postcount=73
Defender’s witnesses:
For suspect #6, WIFI bug
http://forum.xda-developers.com/showpost.php?p=10043778&postcount=49
Expert witnesses / interesting battery info:
http://www.androidpolice.com/2010/12/14/your-battery-gauge-is-lying-to-you-everything-you-need-to-know-about-bump-charging-and-inconsistent-battery-drain/
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
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A little stuff that could be good
Usefull stuff and help will be collected here
To find out if suspect #3 has visited your phone (frequent flashers should suspect this) then this might help:
In SGSTools ther is a script to do that procedure of removing thumbnails and also delete two databases so they get rebuilt after reboot. In SGSTool (search market, need root) press Apply script then select clean_thumb_db.txt
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Modems could have a positive/negative effect on battery life, it could depend on what carrier you are on different regions could also matter.
pele78 have made a very good page about different modems, please take a look at it:
http://forum.xda-developers.com/showpost.php?p=9579987&postcount=11945
And DocRambone has a great collection of modems if you want to test another to see if it gives you a couple of extra hours in you SGS:
http://forum.xda-developers.com/showpost.php?p=9724862&postcount=14434
-----------
lpy hooked up a multimeter to the battery and did some live measurements, I have put them in one post that you find here:
http://forum.xda-developers.com/showpost.php?p=10137241&postcount=387
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TheYar has a batterythread over at the captivates forums, you might find some interesting things over there as well:
http://forum.xda-developers.com/showthread.php?t=806211
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rigor.m made this suggestion:
To check for wifi bug, from a pc, log in to your router, check what IP your phone got, ping that IP from your PC does the phone respond when wifi should be off? - Report your findings!
-----------
Added January 11:
About the battery meter, hardcore found something weird, please see his post:
http://forum.xda-developers.com/showpost.php?p=10505720&postcount=8811
Regarding these things, please check the links under Expert witnesses in the previous post.
-----------
Feel obliged to recommend a visit to hardcore's Speedmod kernel thread:
http://forum.xda-developers.com/showthread.php?p=10056736#post10056736
Also this post for a different wifi firmware:
http://forum.xda-developers.com/showpost.php?p=10056736&postcount=6706
And a direct link to his download page:
http://touristinparadise.blogspot.com/2010/11/samsung-galaxy-s-download-speedmod.html
And now I also add trasig's Advanced Voodoo 5 kernel with OC/UV:
http://forum.xda-developers.com/showthread.php?t=823300
Direct link to his download page:
http://kernel.1ug.org/
If you want to support me me more than by contributing to this thread, consider if you would like an easy and automatic backup for your PC, 2Gb free plus a 256Mb bonus space for both you and me, that’s 2.25Gb of free backup space for your mail and documents (and anything else you want) and for each referral you make in the future you get an extra 256Mb space added to your account.
I have been using Mozy for 3 years now and I'm very happy with it.
Sign up from here: https://mozy.com/home/free/ at the end of the registration please enter my referral code: BQBF53

Extra - useful CWM files
Info moved to post #1 - reserved for additional info
If you want to support me me more than by contributing to this thread, consider if you would like an easy and automatic backup for your PC, 2Gb free plus a 256Mb bonus space for both you and me, that’s 2.25Gb of free backup space for your mail and documents (and anything else you want) and for each referral you make in the future you get an extra 256Mb space added to your account.
I have been using Mozy for 3 years now and I'm very happy with it.
Sign up from here: https://mozy.com/home/free/ at the end of the registration please enter my referral code: BQBF53

I have tested mine overnight (JPX) and lost 10% in around 8 hrs. 2.2.1 email client set to sync every hour on two accounts. I have now turned it off and will update once tested again.
Using built in monitor and SGSInfo, I've found no anomalies in battery usage, but it is higher than previous firmwares.
Good idea for a thread!

Ah, this is the perfect thread for me. I'm in the midst of trying to recalibrate my battery. I can say though, that with wifi and 3g off, I get next to no drain. (A bit annoying having to have them off though). I do however get drain with 3g on. I currently have gmail sync on and I've updated with the AOSP email now with push sync for exchange to see if it helps.

OK, I'll share my current status.
I've been using XWJPA with JPM modem for more than a month and was very satisfied with battery life.
Recently I upgraded to Doc's rom v5.1 (XXJPX based) and that introduced a battery drain problem.
When WiFi is connected, the phone fails to sleep properly and is running more than 50% of the time when idle, which results in huge loss of power (more than 10% per hour on several ocasions).
I've since upgraded to Doc's v6, v6.1, v6.2 as well as stock XXJPY, kernels Voodoo 5.0.3, Hardcore's K12, and stock, modems JPM, JPP, JPY = problem persists. All testing done on clean flashed roms with no additional software installed.
Another (well known) issue i'm having since JM1 is "Time without signal: 50%" which is easily solved by switching Airplane Mode On and Off, but it's annoying nonetheless, especially if you forget to do it upon restart only to find your battery is flat 5 hours later.

Darkyy has fixed this wifi battery drain issue and a load of other stuff in his latest ROM
http://forum.xda-developers.com/showthread.php?t=814091
Excellent ROM, pure speed and looks tasty

check wifi sleep policy too

I experienced quite a ridiculous amount of drain on the stock + voodoo kernel bundled with Doc's JPY 6.1 ROM as well as on SpeedMod k11c. I literally saw my battery dwindle down as I was using it normally yesterday.
No games, no music or video...just exchanging a few text messages and setting up my apps and such again after a fresh flash. Wifi, 3g, Bluetooth, Auto-Rotate, GPS were all off. Brightness set to the lowest possible. Still lost as much as 10-15% in an hour and let's say within that one hour the screen was on for half the time (I was out of the house so I didn't time it or anything)...
Have not had good battery life since Doc's JP8 ROM sadly and that was back in the days of 2.2...

hydrouk said:
Darkyy has fixed this wifi battery drain issue and a load of other stuff in his latest ROM
http://forum.xda-developers.com/showthread.php?t=814091
Excellent ROM, pure speed and looks tasty
Click to expand...
Click to collapse
AFAIK he has not fixed it, but thinks XXJPY has the fix included, which is not the case for me.

hydrouk said:
Darkyy has fixed this wifi battery drain issue and a load of other stuff in his latest ROM
http://forum.xda-developers.com/showthread.php?t=814091
Excellent ROM, pure speed and looks tasty
Click to expand...
Click to collapse
I've read through the latter posts on there and the problem still persists for a lot of people. Wifi battery drain issue still doesn't seem resolved in his latest ROM according to recent posts.

From my side, i have noticed a quite a big difference in battery drain when switching from voodoo to speedmod's kernel. (speedmod's being much better in terms of drain in my case), but having said this, I never came any close to JPO in terms of battery drain yet. That was much better for me.
I installed the latest voodoo kernel last night, and noticed that in my Battery info history, the infamous "0" process did not appear at all in network usage, and battery drain was not that bad (still nowehere close to JPO) but not bad either. Basically I removed the phone from the charger at 4AM this morning (after trying the suggested "trick" of fully draining the phone and charging while the phone was off, have no idea if this makes any difference at all ... but am out of ideas at this stage) and am at 66% battery at 3:00 PM. I would say on less than normal usage today, since I did not use it much, but I have seen worse.
I hav now just flashed the latest speedmod kernel, based on JPX (http://forum.xda-developers.com/showthread.php?t=822756) K12 and will revert back.
I have also tried all the wipe battery stats suggested (with charger, without charger, at 100%, at 1% and so on, none ever helped)
Also the script to clear the thumbnails and the possibly corrupted databases ... still no joy

hydrouk said:
Darkyy has fixed this wifi battery drain issue and a load of other stuff in his latest ROM
http://forum.xda-developers.com/showthread.php?t=814091
Excellent ROM, pure speed and looks tasty
Click to expand...
Click to collapse
Ok, thanks for the insight, but please don't use this thread as an adverising space.
So for some facts:
"this wifi battery drain issue" guess you refer to the previous poster, but I would really like to know a little mor details about the problem, and how has Darkyy fixed this?
Refering to the 1 post in a thread is not the kind of scientific facts that will help finding the true causes so could you be a little more specific?

bokbacken said:
Ok, thanks for the insight, but please don't use this thread as an adverising space.
So for some facts:
"this wifi battery drain issue" guess you refer to the previous poster, but I would really like to know a little mor details about the problem, and how has Darkyy fixed this?
Refering to the 1 post in a thread is not the kind of scientific facts that will help finding the true causes so could you be a little more specific?
Click to expand...
Click to collapse
It's a "fix" that came with JPY, not actually one done by darky..and it still isn't fixed according to recent posts by those who've recently updated to his JPY (v7) ROM.

Interesting thread! I went from 2.2 JP8 to 2.2.1 JPU and found that my battery drain decreased, it went from 2 days between charges to (almost) 3 days. I then flashed JPX and then JPY and found the battery drain terrible with both, I was lucky to get a day and a half before recharging. I've just flashed back to JPU and then flashed the BUJP5 modem (which is the correct stock one for my phone / country). I'm waiting to see what happens to the battery life now... I'll post results as soon as I get a feel for whether it's any better / worse.

anoneemooz said:
It's a "fix" that came with JPY, not actually one done by darky..and it still isn't fixed according to recent posts by those who've recently updated to his JPY (v7) ROM.
Click to expand...
Click to collapse
Hi!
Yes I know that, I only want the posters to start thinking a few steps ahead, I don't really care for this "If you only install xxxx:s ROM, all problems are fixed", it's not the kind of posts any of us wish to see here.
Both you and I know for a fact that there are no quick fixes

i have no problems on anyfirmware. my phone works like a 7 days or more on each firmware all i use is a stock rom and a app killer i kill all apps everytime i put it into standy. working great for me so far.

bokbacken said:
Hi!
Yes I know that, I only want the posters to start thinking a few steps ahead, I don't really care for this "If you only install xxxx:s ROM, all problems are fixed", it's not the kind of posts any of us wish to see here.
Both you and I know for a fact that there are no quick fixes
Click to expand...
Click to collapse
True that!
Hm I left my phone untouched for an hour and a half and checked battery history and I'm down to 98%. Apparently my wifi doesn't sleep even if I already set the wifi sleep policy to "Never when plugged" :|

SKeijmel said:
i have no problems on anyfirmware. my phone works like a 7 days or more on each firmware all i use is a stock rom and a app killer i kill all apps everytime i put it into standy. working great for me so far.
Click to expand...
Click to collapse
7 days?! lol do you do anything with your phone besides kill apps?

I don't get how people have battery drain.

Like I honestly don't understand it. They are obviously doing something wrong. I am running NAND with the SD card for applications (Stock 16GB) with gauner1986's HD-FI 0.3 with 2.15.50.14 and I have only 2-5ma battery drain on standby. But here's what I noticed:
Certain applications from Market increases battery drainage. If you install an app, begin to experience high battery drain, uninstall it.
It's a 3G phone for godsakes. Why disable the speed of it by going 2G?
Disable WiFi/Bluetooth/GPS when not needed.
Don't disable AutoSync or Background Sync. I've noticed no increase with both of them except when it pushes email, updates
Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
Don't disable APN either. This isn't your dumbphone, it's meant to have internet. Internet won't drain your battery life if it isn't active.
SetCPU is pointless. I don't even touch it as the risk to damage your phone using it is great. There has been no solid evidence this helps your battery life other then to SLOW down your phone.
Don't use a TaskKiller - Common sense, it eats battery. Android is programmed to kill apps.
On standby, it can last for freaking days even under light/medium usage. Constant heavy usage will make you last at-least a day.
Seriously. If you get drain, you have the wrong radio or application. I even tried uninstalling stock applications like Calender and removing widgets and they had no effect on my system. If you have to disable MAIN smartphone features, you might as well go back to:
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I agree with most of what you say here but not this
Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
Click to expand...
Click to collapse
Personally i think your better off keeping the brightness as low as possible as i did experience battery drain when i had it up to 100%.

I have a taskkiller and I don't notice any difference at all. Having the brightness to 100 does drain your battery that's just common sense.

have no probs with batt drain, i dont use appkillers, brightness on about 45%, play music most of the day, internet on all day with updates, txt and call daily, still on 75% now, not a problem

FirefighterDown said:
[*]Certain applications from Market increases battery drainage. If you install an app, begin to experience high battery drain, uninstall it.
Click to expand...
Click to collapse
True.
[*]It's a 3G phone for godsakes. Why disable the speed of it by going 2G?
Click to expand...
Click to collapse
Because it really is a battery consumer. Actually, surfing on 3G is more power consuming than on WiFi, and Edge is fast enough for a fair amount of uses. Having a 2G/3G toggle widget is probably best, indeed no need to dumb down your phone too much.
[*]Disable WiFi/Bluetooth/GPS when not needed.
Click to expand...
Click to collapse
WiFi & BT are obviously true, GPS is bullocks. As long as there's no GPS app running (i.e. there's no GPS icon in the status bar), your GPS is not active and is drawing zero current. It's just a setting.
[*]Don't disable AutoSync or Background Sync. I've noticed no increase with both of them except when it pushes email, updates
Click to expand...
Click to collapse
For some people, with certain apps behaving in a certain way (for example business people getting emails every minute), this can really be a serious battery hug. Again no need to dumb down your phone too much, but it if you really need to squeeze out those extra hours of juice this is a valid option.
[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
Click to expand...
Click to collapse
That's plain rubbish. More brightness = more emitted light = more emitted energy. Read a physics book someday, this really makes no sense. Display is one of the biggest battery hogs, especially when actively using your phone. Leaving it on a low brightness level sure helps heaps.
[*]Don't disable APN either. This isn't your dumbphone, it's meant to have internet. Internet won't drain your battery life if it isn't active.
Click to expand...
Click to collapse
First part is true, enjoy the features your phone has. It does drain your battery though, even when inactive. There's no such thing as a free meal. Disabling mobile data won't double your battery life, but is a very valid option when you really need your phone to last just that little bit longer.
[*]SetCPU is pointless. I don't even touch it as the risk to damage your phone using it is great. There has been no solid evidence this helps your battery life other then to SLOW down your phone.
Click to expand...
Click to collapse
Bullocks again. First of all, underclocking cannot damage your phone in any way. Obviously no scientist has done research (actually, someone probably has but I don't feel like googling any right now) to provide solid evidence on the matter of cpu clocking affecting battery life, but any tech-guy with some experience will disagree with you. No need to clock down your CPU to 245Mhz obviously, but a 900Mhz clock speed will still more than suffice for most users. Again this won't significantly boost battery performance, but all the small bits help.
[*]Don't use a TaskKiller - Common sense, it eats battery. Android is programmed to kill apps.
Click to expand...
Click to collapse
Probably the most valuable information in this thread - spot on!
Constant heavy usage will make you last at-least a day.
Click to expand...
Click to collapse
Define heavy usage. How about playing Angry Birds at 100% brightness, while listening to Pandora with your Bluetooth headset/headphones, through a 3G connection obviously. Not a very far-fetched setup eh!
I'll buy you a cookie if you last more than, say, 6 hours. You probably won't last 4 hours either but I really don't feel like buying you a cookie.

FirefighterDown said:
Constant heavy usage (without playing games or watching movies) will make you last at-least a day.
[/IMG]
Click to expand...
Click to collapse
fixed
ten char

FirefighterDown said:
[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it]
Click to expand...
Click to collapse
As other posters have said that is nonsense mate. You can easily see with current widget that the consumption is higher with higher brightness.

Bluetooth battery drain is the only issue
Coming from Windows 6.5 -as we all do- we all discuss the battery drainage.
All reasons for battery drainage given in this thread are true (bright screen sucks battery, 3G does etc etc.).
BUT WHY DOES THIS HD2 on ANDROID SUCK MORE BATTERY THAN THE SAME HD2 ON WINMO?
The bluetooth drivers obviously are not the right ones. On Winmo there was no significantly higher battery drainage with bluetooth on than with bluetooth off.
In all Android Roms that I have tried (and I tried them all), bluetooth empties the battery with about 60mA.
Who knows a rom that does not have this bluetooth problem?

jonny68 said:
I agree with most of what you say here but not this
Personally i think your better off keeping the brightness as low as possible as i did experience battery drain when i had it up to 100%.
Click to expand...
Click to collapse
I work outside in direct sunlight, where low settings makes it not viewable. I have it to max and even at home at 40 percent, I see no changes. Probably because of my usage pattern.
Sent from my HTC HD2 using XDA App

hello00 said:
I have a taskkiller and I don't notice any difference at all. Having the brightness to 100 does drain your battery that's just common sense.
Click to expand...
Click to collapse
Taskkillers have been proven to drain your battery. Google themselves have said it and admitted it in complex details. There's a thread on it that Ill pull up later at home. Like I said I see no differences in my battery report.
Sent from my HTC HD2 using XDA App

StephanV said:
You probably won't last 4 hours either but I really don't feel like buying you a cookie.
Click to expand...
Click to collapse
Sorry for this post.... but this made me laugh hard.....

StephanV said:
Probably the most valuable information in this thread - spot on!
Click to expand...
Click to collapse
So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.

TheATHEiST said:
So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.
Click to expand...
Click to collapse
No, just being in RAM memory does not (or maybe very little) use energy. When idle, they're just stored there. A lot of apps simply restart soon after you kill them, consuming a lot more power than just leaving them be, and on top of that you may experience bad app behaviour.
Well, if those apps do stuff they shouldn't be doing, they're badly developed and should be removed or updated, simple as that. Chances are though that those apps really need to be running (and their battery consumption doesn't necessarily have to be high), in which case killing them is even worse.
A lot of well known devs have very clearly pointed this out multiple times (Cyanogen for example is one of them), even Google twittered about it. Do some research, there's plenty of info on it.

It was good to know that info, i never knew that app killers could do more damage and use more power than none at all.

TheATHEiST said:
So why when I run a task killer I get over a dozen apps running in list and when I close them my free RAM goes up, surley if they are using ram they are using energy?
Click to expand...
Click to collapse
No. Android kills applications to free up RAM usage when i needs them.
Also surely the energy that these apps are using is MORE then the energy of the task killer itself?
Click to expand...
Click to collapse
Also incorrect, most applications are killed upon exit/back key hit. Or put into a suspended mode that eats no battery (Android Browser, Facebook etc)
There is ****loads of apps that just seem to run themselves in background and have no need to, I set my killer to kill every 30 mins or whenever screen is off aswell as manually when I choose to.
Click to expand...
Click to collapse
If only that was true. Killing applications will restart them which uses RAM to restart them which can also slow down your system. Applications don't run unless they are continuously fetching/streaming data or providing a service.
Can you provide any evidence that the task killer uses more energy then all the apps running in background combined as I seem to get much better battery with it then without it.
Click to expand...
Click to collapse
Ha, I don't believe you.
tl;dr version at the bottom.
Originally Posted by Google
By default, every application runs in its own Linux process. Android starts the process when any of the application's code needs to be executed, and shuts down the process when it's no longer needed and system resources are required by other applications. A content provider is active only while it's responding to a request from a ContentResolver. And a broadcast receiver is active only while it's responding to a broadcast message. So there's no need to explicitly shut down these components.
Activities, on the other hand, provide the user interface. They're in a long-running conversation with the user and may remain active, even when idle, as long as the conversation continues. Similarly, services may also remain running for a long time. So Android has methods to shut down activities and services in an orderly way:
- An activity can be shut down by calling its finish() method. One activity can shut down another activity (one it started with startActivityForResult()) by calling finishActivity().
- A service can be stopped by calling its stopSelf() method, or by calling Context.stopService().
- Components might also be shut down by the system when they are no longer being used or when Android must reclaim memory for more active components.
If the user leaves a task for a long time, the system clears the task of all activities except the root activity. When the user returns to the task again, it's as the user left it, except that only the initial activity is present. The idea is that, after a time, users will likely have abandoned what they were doing before and are returning to the task to begin something new.
Click to expand...
Click to collapse
Originally Posted by Google
Activity lifecycle
An activity has essentially three states:
- It is active or running when it is in the foreground of the screen (at the top of the activity stack for the current task). This is the activity that is the focus for the user's actions.
- It is paused if it has lost focus but is still visible to the user. That is, another activity lies on top of it and that activity either is transparent or doesn't cover the full screen, so some of the paused activity can show through. A paused activity is completely alive (it maintains all state and member information and remains attached to the window manager), but can be killed by the system in extreme low memory situations.
- It is stopped if it is completely obscured by another activity. It still retains all state and member information. However, it is no longer visible to the user so its window is hidden and it will often be killed by the system when memory is needed elsewhere.
- If an activity is paused or stopped, the system can drop it from memory either by asking it to finish (calling its finish() method), or simply killing its process. When it is displayed again to the user, it must be completely restarted and restored to its previous state.
- The foreground lifetime of an activity happens between a call to onResume() until a corresponding call to onPause(). During this time, the activity is in front of all other activities on screen and is interacting with the user. An activity can frequently transition between the resumed and paused states - for example, onPause() is called when the device goes to sleep or when a new activity is started, onResume() is called when an activity result or a new intent is delivered. Therefore, the code in these two methods should be fairly lightweight.
Click to expand...
Click to collapse
The following diagram illustrates these loops and the paths an activity may take between states. The colored ovals are major states the activity can be in. The square rectangles represent the callback methods you can implement to perform operations when the activity transitions between states.
tl;dr version
- Android is hard coded to automatically kill a task when more memory is needed.
- Android is hard coded to automatically kill a task when it's done doing what it needs to do.
- Android is hard coded to automatically kill a task when you haven't returned to it in a long time.
- Most services (while possibly running in the background) use very little memory when not actively doing something.
- A content provider is only doing something when there is a notification for it to give. Otherwise it uses very little memory.
- Killing a process when it isn't ready only causes it to have to reload itself and start from scratch when it's needed again.
- Because a task is likely running in the background for a reason, killing it will only cause it to re-spawn as soon as the activity that was using it looks for it again. And it will just have to start over again.
- Killing certain processes can have undesirable side effects. Not receiving text messages, alarms not going off, and force closes just to name a few.
- The only true way to prevent something from running at all on your phone would be to uninstall the .apk.
- Most applications will exit themselves if you get out of it by hitting "back" until it closes rather than hitting the "home" button. But even with hitting home, Android will eventually kill it once it's been in the background for a while.

StephanV said:
For some people, with certain apps behaving in a certain way (for example business people getting emails every minute), this can really be a serious battery hug. Again no need to dumb down your phone too much, but it if you really need to squeeze out those extra hours of juice this is a valid option.
Click to expand...
Click to collapse
Obviously you don't have push email setup. Nobody buys the HD2 for that, they buy a Blackberry. Even syncing every hour isn't going to harm your battery other then a few moments versus turning it off altogether. No noticeable differences.
That's plain rubbish. More brightness = more emitted light = more emitted energy. Read a physics book someday, this really makes no sense. Display is one of the biggest battery hogs, especially when actively using your phone. Leaving it on a low brightness level sure helps heaps.
Click to expand...
Click to collapse
Like I said above, has no affects on me. On a laptop, sure. Because those are 15 inch screens, not on a 4.3.
Bullocks again. First of all, underclocking cannot damage your phone in any way. Obviously no scientist has done research (actually, someone probably has but I don't feel like googling any right now) to provide solid evidence on the matter of cpu clocking affecting battery life, but any tech-guy with some experience will disagree with you. No need to clock down your CPU to 245Mhz obviously, but a 900Mhz clock speed will still more than suffice for most users. Again this won't significantly boost battery performance, but all the small bits help.
Click to expand...
Click to collapse
Are you serious? Overclocking and under-clocking has already been proven to harm Intel and AMD processors on main computers in long term situations. Phones run processors just like your laptop/desktop PC does. There's been nothing to prove it helps save battery. I have never used SetCpu and think it's stupid and my phone still outlasts a buddy who runs SetCPU to underclock the CPU. Speed doesn't affect battery or you'd understand that slower CPU would take longer time to run applications, further reducing the battery.
Define heavy usage. How about playing Angry Birds at 100% brightness, while listening to Pandora with your Bluetooth headset/headphones, through a 3G connection obviously. Not a very far-fetched setup eh!is so
I'll buy you a cookie if you last more than, say, 6 hours. You probably won't last 4 hours either but I really don't feel like buying you a cookie.
Click to expand...
Click to collapse
Lets use some basic mathematical skills here. Indeed I just tested this for an hour straight and the drain was 150-200ma constantly. The HD2 battery is something like 1200, 1300ma whatever in total. Lets say its 1200 (too lazy to check) that divided by 200ma drain equals six. Six hours so your logic goes out the door.
Click to expand...
Click to collapse

FirefighterDown said:
Obviously you don't have push email setup. Nobody buys the HD2 for that, they buy a Blackberry. Even syncing every hour isn't going to harm your battery other then a few moments versus turning it off altogether. No noticeable differences.
Click to expand...
Click to collapse
I'm not sure I'm with you here. I do have push email enabled, and it's one of the things I like about Android. What does Blackberry have to do with this? Missing your point.
Well, in your case, it may not be a noticeable difference. It does for people who get a lot of emails. Exactly like I said in my previous posts. What is your point?
Like I said above, has no affects on me. On a laptop, sure. Because those are 15 inch screens, not on a 4.3.
Click to expand...
Click to collapse
Well, I'm 100% sure it affects you too. You can't just create energy out of nothing. Upping the intensity from lowest to highest easily adds in an extra 80mA, and that's just a rough and probably too low estimate.
Have you ever compared you HD2's battery with a laptop battery? Not quite in the same league of size now is it. Moar size = moar powers (well, kind of). Dumb laptop comparison, sorry to put it like this.
You can go ahead and try to reinvent battery usage all you want, but a 4,3" screen is and always will be one of the major battery hogs on a phone like this.
Are you serious? Overclocking and under-clocking has already been proven to harm Intel and AMD processors on main computers in long term situations. Phones run processors just like your laptop/desktop PC does. There's been nothing to prove it helps save battery. I have never used SetCpu and think it's stupid and my phone still outlasts a buddy who runs SetCPU to underclock the CPU. Speed doesn't affect battery or you'd understand that slower CPU would take longer time to run applications, further reducing the battery.
Click to expand...
Click to collapse
Are you? I haven't even used the word 'overclocking' in my entire post, of course that's bad for your hardware. Underclocking isn't gonna do **** though. I'll buy you another cookie if you find a valid source backing that statement up. But let me give you a hint: ain't gonna happen José. Just sayin'. (Disclaimer: I'm talking about realistic/plausible underclocking situations here, applicable to comparable hardware)
Uhm actually there has. Moar CPU = moar heat = moar power loss = moar battery loss. Again, conservation of energy, which could be found in the book I advised you earlier (well actually a thermodynamics book would be more appropriate).
Sounds like some very valid empirical proof you got right there. I'm sorry, but I could care less about your 1 comparison with that unknown phone of your unknown buddy, whom I have no clue about if he can even properly configure SetCPU or has a properly configured battery.
Lets use some basic mathematical skills here. Indeed I just tested this for an hour straight and the drain was 150-200ma constantly. The HD2 battery is something like 1200, 1300ma whatever in total. Lets say its 1200 (too lazy to check) that divided by 200ma drain equals six. Six hours so your logic goes out the door.
Click to expand...
Click to collapse
150-200mA while playing Angry Birds @ 100% Brightness, while listening internet radio through 3G and BT headphones? Sorry, that's just physically not possible, hardware-wise. Not ever ever ever ever gonna happen, so you are either lying your ass off or have no clue how to check your current usage properly.
I think I'm sounding like a major douchebag here, but I don't really get it how you feel like you know all about this stuff when very clearly your technical knowledge on this matter is really limited. I'm very happy for you that you're happy with your battery life, but don't try and preach this like t3h l33t battery solution, because put simply: it's not.

[*]Keep the brightness UP to 100 percent. I saw no difference upon lowering it.
actually this is so funny dude ..
more light NEEDS more power .. this is so simple.. like 1+1=2

Solution to battery life issues (works 100%, guaranteed)

I love this phone and have posted this on several forums already. I want everyone to enjoy it as much as I do.
I switched from an IPhone 4 to the Atrix and I am really impressed by the device. HOWEVER, I was very close to return the phone due to poor battery life (in comparison the IPhone 4). The max I got out of the device was 14-16 hrs and the strange thing was that it did not make ANY difference whether I hardly used the phone at all or played around most of the time. Over the weekend I checked and after unplugging the phone from the charger and leaving it on the desk the battery was down to 70%.
By the end of the day on my IPhone I used to have about 30% battery left with all radios (3g, bluetooth, wifi, GPS) on and moderate use. With similar use and GPS off the Atrix hardly made it through the day. I read several suggestions and wanted to share how I increased battery life by almost 100%!! Like mentioned earlier I was puzzled that even in idle status there was a 10-15% drain. The only logic explanation was that there are services that continue in the background and drain the battery.
1. I think the absolute biggest battery drain is to enable wifi triangulation for location services. The fact that the pop-up window states "...Collection will occur even when no applications are running." should have made my suspicious. I have noticed that enabling the GPS does not have any significant effect on battery life as long as you do not have any applications open that use that radio (like maps). Obviously I disable the wifi option in location services.
2. Root your phone and download Titanium Backup PRO. Disable all Motoblur services. I do not use any Motoblur widget/services (no facebook, twitter and so on) and am happy with the native gmail client. I literally froze allmost all of the motoblur services as well as other services that may use data services in the background (news, weather services).
Following link gives a good overviw which services can be disabled without any problems:
Death-Force • Thema anzeigen - [TIP][Tutorial] Freeze Motoblur for more Performance and RAM
3. I haven't really found it helpful to use setcpu. Whats the point of having a ferrari and driving it at 30 mph?
Since making those changes I have seen a significant increase in battery life. Using the gmail client, bluetooth+GPS+wifi+3g on, screen set to auto-brightness and mdoerate use throughout the day I make it easily throughout the day with the battery indicator showing in general 30-40%. I think step 1 made the biggest difference. Again, this phone is just amazing and I do not miss my IPhone at all!

No way!?!?
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We've landed on the Moon!!!!

bimbocoles said:
3. I haven't really found it helpful to use setcpu. Whats the point of having a ferrari and driving it at 30 mph?
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Because you don't want your Ferrari to use up gas while you're not driving it?
With SetCPU, you can set a profile for it to throttle down several hundred mhz whenever the display turns off. I find that even background services like Pandora can run perfectly fine even when that dualcore "ferrari" of a machine has the display off at half the ghz.
Using setCPU alone, I feel like me battery life doubled. I recently froze motoblur in its tracks and only provided minimal increase compared to just underclocking it.

acPIZZA said:
No way!?!?
We've landed on the Moon!!!!
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lol, thats the best thing i have seen all day!!

hondaguy said:
lol, thats the best thing i have seen all day!!
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my trolling = quotes and screen shots of Dumb and Dumber.

its amazing how experiences vary from user to user. i had installed setcpu the 2nd day that i had the atrix and didnt really notice a big improvement (with it properly set up to save battery). i froze the blur settings and the weather widgets and can easily get through a heavy days usage. i find the atrix is at least as good, if not better when it comes to battery life.
i leave the wifi and cellular location option on and my battery life is great. i dont have widgets or apps running in the background that need my location and i even say no when google asks for permission to use my location for better search results. disabling this feature would make a big difference for people that use location aware apps often but i find it takes far too long to get a good gps lock when using maps if this feature is off.
as long as you are happy with your battery life, thats all that matters

Never used setCpu on my phone. battery lasts for awhileeeeeeeeeeeeeee!

setcpu is not necessary the cpu automatically throttles down when not in use, the phone doesnt run at 1ghz all time...
ive noticed with the atrix you need to turn off gps when you are not using it or it will still be on even when no apps are using it. my captivate used to turn off gps when i exited an app that was using it. im not sure if this is the case with wifi too.

After playing a long time with phone I found synchronized apps like talk, gmail, take up most of the battery.

hondaguy said:
lol, thats the best thing i have seen all day!!
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yeh that was hilarious... well played sir..

neotekz said:
setcpu is not necessary the cpu automatically throttles down when not in use, the phone doesnt run at 1ghz all time...
ive noticed with the atrix you need to turn off gps when you are not using it or it will still be on even when no apps are using it. my captivate used to turn off gps when i exited an app that was using it. im not sure if this is the case with wifi too.
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my gps turns off when i'm not using an app that needs it

acPIZZA said:
No way!?!?
We've landed on the Moon!!!!
Click to expand...
Click to collapse
flawless first response

neotekz said:
setcpu is not necessary the cpu automatically throttles down when not in use, the phone doesnt run at 1ghz all time...
ive noticed with the atrix you need to turn off gps when you are not using it or it will still be on even when no apps are using it. my captivate used to turn off gps when i exited an app that was using it. im not sure if this is the case with wifi too.
Click to expand...
Click to collapse
Can anyone confirm this? I would really prefer not to use setcpu unless I have to