Database Users

excessive battery consumption... help needed

Hi.
i am using Touch HD with extended 2600mAH battery and lots of software but the battery barely last a day. i was hoping you could help me diagnose the problem.
configuration :
-duttys XT 3.0 using manila
-1 hour of talk time a day at the most
these are my main suspects :
-checking for mail on two accounts every half an hour
-S2U2 1.62
-phonealarm
-pocketbreeze new PB2
-touchresponse
i installed nueDynamicClock but i can't see any difference.
first of all, maybe this sounds normal to you ? maybe my device is defected ? i'm sure the battery is ok.
maybe someone knows a good battery diagnostic program...
any comments you have on any of my suspected software ?
thanks,
david

Try this, quoted from official HTC site:
My battery drains fast even without using Bluetooth, WiFi or GPS. Is there any way to check if it’s faulty or not?
1. Charge the battery to 100%. 2. Disable from running or uninstall any 3rd party applications. 3. Disable Bluetooth. 4. Disable WiFi. 5. Enable flight mode 6. Set backlight to maximum settings. 7. In the power management settings, uncheck any option that would set the backlight to turn off. 8. Let phone stay idle for 1 hour and check battery capacity. 9. If there is a loss of 40% or more, then this means that battery is faulty and needs to be replaced.
Click to expand...
Click to collapse

jankos said:
Try this, quoted from official HTC site:
Click to expand...
Click to collapse
Thanks for that. I've been a little concerned with my battery life so i'll give that a try later.

jankos said:
Try this, quoted from official HTC site:
Click to expand...
Click to collapse
well obviously this doesn't help me too much because, as stated, the battery last almost a day with full usage so this diagnostic will be a negative... but surely something is wrong. Thanks anyway.
didn't anyone have any problems with one of the above ?

Max battery life
Battery drain in almost a day is quite normal with most of the roms
exception, i flashed Black Pearls v2.4 rom and the battery is still 20 to 30% at the end of the day. myself satisfied with the performance of this rom...
http://forum.xda-developers.com/showthread.php?t=495233
update the 3d drivers after flashing the rom
http://forum.xda-developers.com/showpost.php?p=3059269&postcount=3

denjo said:
Battery drain in almost a day is quite normal with most of the roms
exception, i flashed Black Pearls v2.4 rom and the battery is still 20 to 30% at the end of the day. myself satisfied with the performance of this rom...
http://forum.xda-developers.com/showthread.php?t=495233
update the 3d drivers after flashing the rom
http://forum.xda-developers.com/showpost.php?p=3059269&postcount=3
Click to expand...
Click to collapse
flashing a rom just to check this seems like a overkill...
i was wondering about any diagnostic tools allowing me to see the consumption without waiting a whole day to compare, any on knows of any ?

dudikbs said:
Hi.
i am using Touch HD with extended 2600mAH battery and lots of software but the battery barely last a day. i was hoping you could help me diagnose the problem.
configuration :
-duttys XT 3.0 using manila
-1 hour of talk time a day at the most
these are my main suspects :
-checking for mail on two accounts every half an hour
-S2U2 1.62
-phonealarm
-pocketbreeze new PB2
-touchresponse
i installed nueDynamicClock but i can't see any difference.
first of all, maybe this sounds normal to you ? maybe my device is defected ? i'm sure the battery is ok.
maybe someone knows a good battery diagnostic program...
any comments you have on any of my suspected software ?
thanks,
david
Click to expand...
Click to collapse
Why dont you check the idle cpu usage when your phone is on but not doing anything. It should be 98-99% most of the time. If you get high cpu usage by shell or services then it is most probably phoneAlarm or other plugins on Today screen.
If you are using wifi, make sure you set it to off when standby. (Note: If you are using AE Button (mine is v2.63) and if you use it to turn ON wifi, the wifi will not go to sleep even in standby thus draining battery)

Battery Life Vogue Android

So, I recently got a vogue and immediately put android cupcake on it. (great work devs btw )
So here's the problem, I cant get through the day 7 am - 12 am with light to moderate use without needing to charge.
I would like to keep 3g/background data on during this time.
Has anyone had any success having their vogue-androids last this long?
Are there any advanced power managers that allow you to change the backlight quickly and easily or allow you to turn data off during certain times? (like data off for a 1/2 hour and then data on for 1/2 hour)
Thanks,
Kevin

sushichef said:
So, I recently got a vogue and immediately put android cupcake on it. (great work devs btw )
So here's the problem, I cant get through the day 7 am - 12 am with light to moderate use without needing to charge.
I would like to keep 3g/background data on during this time.
Has anyone had any success having their vogue-androids last this long?
Are there any advanced power managers that allow you to change the backlight quickly and easily or allow you to turn data off during certain times? (like data off for a 1/2 hour and then data on for 1/2 hour)
Thanks,
Kevin
Click to expand...
Click to collapse
There's an app called "Locale" which is apparently awesome, but I haven't tried it myself. It changes settings based on your GPS location, but I'm not too sure about time of day. You may want to check that out.
As for the battery lasting that long, I dunno... I don't think I'd fall into the "light usage" category. My battery typically lasts from about 7:30am till 9 or 10pm though... I'm not too sure, I usually plug it in when I get home from work around 6.

craig0r said:
There's an app called "Locale" which is apparently awesome, but I haven't tried it myself. It changes settings based on your GPS location, but I'm not too sure about time of day. You may want to check that out.
As for the battery lasting that long, I dunno... I don't think I'd fall into the "light usage" category. My battery typically lasts from about 7:30am till 9 or 10pm though... I'm not too sure, I usually plug it in when I get home from work around 6.
Click to expand...
Click to collapse
That would need more battery, since it would need GPS.
We don't have network-based GPS yet.

I have had the same problems with battery life on my vogue even with light usage. Also I don't believe CDMA has the same issues with 3g causing higher battery usage like gsm does. I have tried widgets to quickly toggle the backlight and gps function but only saw minimal improvement. Not sure if the increased battery usage is just a fact of android or if there remain porting/performance issues still to blame.

i've got my background data set to off and i keep gps and stuff off unless i need it and i've got my email set to update every hour and i found this actually gives me better battery life than when running windows so i just went and bought an extended battery off ebay and hopefully it'll get through a complete workday(10 hrs) where as right now i'm getting between 6 and 8 depending on how much I use it.

i've got my background data set to off and i keep gps and stuff off unless i need it and i've got my email set to update every hour and i found this actually gives me better battery life than when running windows so i just went and bought an extended battery off ebay and hopefully it'll get through a complete workday(10 hrs) where as right now i'm getting between 6 and 8 depending on how much I use it.
sorry double posted by accident and don't know how to delete

My battery used to drain pretty rapidly.. 7am - 2pm... but now it lasts from about 7am - 6pm. I think theres a certain amount that the battery can condition itself. I've tried discharging and charging and I do believe that its helped.
Do you guys notice that battery readings are not accurate though? Apparently it has something to do with the temp. sensor in the battery not being correctly configured. For example, if my battery is at 20% and I plug it in the charge, it'll jump to 40% in a matter of 10 mins.

psvillars said:
i've got my background data set to off and i keep gps and stuff off unless i need it and i've got my email set to update every hour and i found this actually gives me better battery life than when running windows so i just went and bought an extended battery off ebay and hopefully it'll get through a complete workday(10 hrs) where as right now i'm getting between 6 and 8 depending on how much I use it.
sorry double posted by accident and don't know how to delete
Click to expand...
Click to collapse
Oh, thats cool, how did you set up it to check every hour? is that an app? or?

sushichef said:
Oh, thats cool, how did you set up it to check every hour? is that an app? or?
Click to expand...
Click to collapse
well that's for my aol email gmail will not be affected i left auto-sync on and from what i could see it still auto-syncs without background data on you could uncheck that but then you'd have to manually update yourself

i too am having pretty bad battery life even when i don't use my phone. why would the battery drain so fast when its sleeping? would that togga app help at all with the latest cupcake build?

fixxxer2008 said:
i too am having pretty bad battery life even when i don't use my phone. why would the battery drain so fast when its sleeping? would that togga app help at all with the latest cupcake build?
Click to expand...
Click to collapse
Togga has been replaced in Cupcake by Modem. They do the same thing, essentially. If you want to turn off your data connection, open Modem and click Disconnect.
Also, in your default.txt make sure the pm.sleep_mode setting is set to 0 for best power saving.
Lastly, update all your files to the latest. The newest rootfs.img is supposed to bring more power-saving functionality. I just installed it this morning, so I can't comment on it yet.

craig0r said:
Togga has been replaced in Cupcake by Modem. They do the same thing, essentially. If you want to turn off your data connection, open Modem and click Disconnect.
Also, in your default.txt make sure the pm.sleep_mode setting is set to 0 for best power saving.
Lastly, update all your files to the latest. The newest rootfs.img is supposed to bring more power-saving functionality. I just installed it this morning, so I can't comment on it yet.
Click to expand...
Click to collapse
yeah i just updated all of my files, ill check my text though.

i checked my text and it is set to 0 already! not a good thing when it only takes 5 hours to drain 50% of my battery life. i hope this can be fixed in future builds, i may have to go back to winmo for the time being because i need my phone for work.
i really love android though!

fixxxer2008 said:
i checked my text and it is set to 0 already! not a good thing when it only takes 5 hours to drain 50% of my battery life. i hope this can be fixed in future builds, i may have to go back to winmo for the time being because i need my phone for work.
i really love android though!
Click to expand...
Click to collapse
Do you have "Use Background Data" unchecked under Settings > Data synchronization? This makes a huge difference. If you have unchecked already, I don't know what to tell you.

with the previous rootfs (just before the new one today 2009-08-04) I've been getting 10 hours with moderate usage, backround data enabled, contacts and gmail auto syncing and locale set to turn my ringer off based on location (btw, I do beleive we have agps working now). Upgrading to the newest kernel and rootfs with more improvement to see if I can get a full day as I am awefully close now.
oh, and I also have a weather widget updating every hour, pretty good battery imo.
EDIT: Tip for battery life, I have my default screen brightness set pretty low, about 30%, as this is fine for most indoor conditions. I use an app called fastbright placed conveniently on my home screen to immediately turn my screen to 100% with the click of an icon when I am outdoors. I also use locale to turn the screen all the way down to 10% when the battery is less than 10%. Both are recommended apps.

I think I was getting much better battery life before introduction of rootfs, like on the order of 4-5 hours more (running hero themed ion). Anyone else have this experience, or is it just me?

tatnai said:
I think I was getting much better battery life before introduction of rootfs, like on the order of 4-5 hours more (running hero themed ion). Anyone else have this experience, or is it just me?
Click to expand...
Click to collapse
Actually yeah, I tried the latest initrd and rootfs today, but it seems like it's a bit lower than it usually is this time of day. I think the first implementation of rootfs was better than this latest over the non-rootfs versions, though. Maybe I just used it more. I kept all the same settings and usage for the day was typical.

Best option is to buy the Extended Battery from DealExtreme for $8.. search for HTC Touch S1 .. the back cover doesn't fit properly but you can always get a one that fits from ebay..
this battery lasts me thru out the day even with heavy usage.. and for $8 u can't go wrong

Today I didn't touch my phone for the first 4-5 hours of my day after charging overnight, and was down to sixty-something percent. I know that on older initrds I was doing much better than this, at least 80% at noon with no usage.
I'm wondering if optimizing memory with the new rootfs stuff has been a trade-off to poorer battery life. Since I'm using mssmison's hero themed ion which is screaming fast, I haven't noticed a difference with the root stuff and think I'm going to try switching back.
I'm switching back to the 7-30-09 initrd.gz, because that's the last one I know my battery was doing much better with and will post back after running it tomorrow.

My issue with battery life is that my phone doesn't seem to know how much battery it has left. It will be on 60 percent, I'll plug it in and 5 minutes later its fully charged.
Or after it comes off the charger overnight, it will go down to 60-50 almost immediately but stay there all day while at work with light usage. I also hate that it doesn't know when its full, I hate to overcharge the batter. So many opinions on if it damages it or not.

[Q] Very High Power Consumption Android On HD2

Hi,
Ive recently installed Android 2.2 Froyo on an SD card on my HD2 and the battery is going down so quick... it wasnt great in Windows mobile but now I'm struggling to get it to last all day...
I'm saying to myself this cant be normal, I'm also trying a Samsung Galaxy S and the battery is so much better!!
Is there anyway I can improve the battery power on my HD2, I know in a HD2 the battery is a 1350mah and the Galaxy S is a 1500mah battery.
Should that make such a difference?
I'm considering going back to Win Mobile but dont really want to but havent got any other choice if the battery carrys on like this....
I also notice the screen and back get really quite warm... I suppose Android is making the system work harder?!?!?!

Its safe to say that you havent read any of the threads about battery life.
Before you say I did a search and didnt find anything Ive already typed in battery in search and found a bunch of threads.
Now what you need to do is find out why its running so warm.
It could be the kernal version you are using.
Ways to improve battery life are using setcpu and underclocking. A lot of members use current widget as a method to see when High drain is occuring.
In sleep mode you should be seeing less than 10ma. If you dont see less then this there is a problem.
Set current widget to 1 min intervals.
Dont use task killers they dont help anything no matter what anyone says.
Dont compare the captivate to the hd2. 2 different phones.

I am using mccm 1.5 customize, and CurrentWidget shows 5mA on standby which I think is good enough. Sometimes, it shows 60mA on standby in a while and my battery drains very fast, even I use Advanced Task Killer but it does not help. I have to reboot the phone to get it back to 5mA on standby.
Anyone has any idea of what may cause my standby power that high (60mA)?
Thanks.

hazard99 said:
Its safe to say that you havent read any of the threads about battery life.
Before you say I did a search and didnt find anything Ive already typed in battery in search and found a bunch of threads.
Now what you need to do is find out why its running so warm.
It could be the kernal version you are using.
Ways to improve battery life are using setcpu and underclocking. A lot of members use current widget as a method to see when High drain is occuring.
In sleep mode you should be seeing less than 10ma. If you dont see less then this there is a problem.
Set current widget to 1 min intervals.
Dont use task killers they dont help anything no matter what anyone says.
Dont compare the captivate to the hd2. 2 different phones.
Click to expand...
Click to collapse
Thanks for your tips for better battery life. I was curious about a few things and hope you could clarify a few things for me and some instruction or threads on how to do so. And yes I have searched, that's the first thing I always do before I do anything web based as far as positng.
1. How do you setcpu and underclocking?
2. How do you find the amount of battery that standby takes? i.e. 60mA? How do you get to that setting in android?
Thanks for your help in advance.

Setcpu is an app used to control your cpu speed.
link included
http://forum.xda-developers.com/attachment.php?attachmentid=394848&d=1283568967
the setcpu dev's site with complete info on how to use it.
http://www.pokedev.com/setcpu/
To check ma's use (current widget)
http://forum.xda-developers.com/showthread.php?t=776085
long press on the desktop and apply current widget. It will ask you if you want to create a log. Create a log for 1 min intervals. Put the phone to sleep and leave it for a good 5 mins.
You can then open the log file usint astro file manager and check your drainage while sleep.
One thing I found is that If i am having high drain i turn my gps on and restart then it usually settles down and I can turn the gps off.
If you have apps that are syncing you will a higher than normal drain during those times the apps sync. if you set your apps to sync at longer intervals the amount of batter drain will be unnoticable.
I have major battery ocd. I constantly check my battery and have to force myself not to look but still use my phone as any normal person would.
I can pull more than 12 hours easy!

Thanks hazard99!
The first time I ran android I don't think I've had any battery issues and now that I'm looking at the percent on my homescreen Im beginning to feel battery OCD too. It's like I lose 1% atleast every 15 minutes when I look at my screen. But I did take and apply all the tips you told me and I do see that it only uses 5ma when screen is off. I truely don't understand. :/

Stop looking at your screen. Stop worrying. The more you look the more juice you use while the screen is on. There will be more points where the phone is off.

traithudo said:
I am using mccm 1.5 customize, and CurrentWidget shows 5mA on standby which I think is good enough. Sometimes, it shows 60mA on standby in a while and my battery drains very fast, even I use Advanced Task Killer but it does not help. I have to reboot the phone to get it back to 5mA on standby.
Anyone has any idea of what may cause my standby power that high (60mA)?
Thanks.
Click to expand...
Click to collapse
Ive also been trying to investigate this, my standby drain is usually 60+ mA, and during use it jumps to the 200's, strange stuff indeed....For you to have 5mA, lol i wish that was for me too =/

otakubakaa said:
Ive also been trying to investigate this, my standby drain is usually 60+ mA, and during use it jumps to the 200's, strange stuff indeed....For you to have 5mA, lol i wish that was for me too =/
Click to expand...
Click to collapse
What radio and wm are you using? Do you use SetCPU?

I had high battery consumption, too. But now I found something interesting...
Due I'm not allowed to post links, yet, search for the post with topic:
[SOLUTION] Possible solution for heavy battery drainage.
With this fix: over night I only lost 20% instead of 59% of battery.

uninstall SetCPU

10507 said:
What radio and wm are you using? Do you use SetCPU?
Click to expand...
Click to collapse
im using the same radio as you (2.10), energycookie rom 21916, and my setcpu is at interactive 245/729, and for sleep its at 245/384, hastarin kernal.

Use a Battdrv.dll from older HD2 ROM 1.48 Etc. I'm not sure if you recmod the module and replace the current one in Windows if you will get the same benefit as if you cooked the driver in.

i just updated my kernal to the latest zimage in mattc's froyosense's evo tree, and my standby is around 6-11 ma now, guess that solved some issues lol, anyone know whats the normal operating ma power consumption for texting?
EDIT: Now when i try to enable wifi i simply get "error", did i mess up on something? =/
EDIT: Solved above problem. WOOT!

Simple Trick To Get 4-11ma In Standby

First, sorry for the new post on this, but I have not seen this mentioned. Didn't want it buried before it could help anyone.
I have used pretty much every android ROM out now, and for some strange reason they each have one constant.
ROMS which give 54-67ma on standby on first boot can be reset a couple of times until they reach the 4-11ma in standby point. Usually takes 1-3 resets.
Now, I'm not sure why this is all I know is it works. And yes, there is a huge amount of difference between 5+ and 50+ma.

I can surely confirm this
Hatefly said:
First, sorry for the new post on this, but I have not seen this mentioned. Didn't want it buried before it could help anyone.
I have used pretty much every android ROM out now, and for some strange reason they each have one constant.
ROMS which give 54-67ma on standby on first boot can be reset a couple of times until they reach the 4-11ma in standby point. Usually takes 1-3 resets.
Now, I'm not sure why this is all I know is it works. And yes, there is a huge amount of difference between 5+ and 50+ma.
Click to expand...
Click to collapse
This is most definitely true, might sound illogical or fake but I personally took battery logs when my drain was 58mA but could not find anything, I changed Kernels just to observe the same and I finally gave up but I accidentally had to reset my phone a few times as I forgot to put it on charge/freeze then after a few days I happened to see terrific battery improvement 5-8mA, I didn't know why but then I understood it was because of the resets..

Good to see I'm not going crazy. Like I said, I tried this with a bunch of different ROMS. All the same.
So if you are having bat problems. Try a few resets and see how that works for you before giving up on the ROM.
Oh, I might also mention I am not running any sort of set cpu app.

Check again
Hatefly said:
Good to see I'm not going crazy. Like I said, I tried this with a bunch of different ROMS. All the same.
So if you are having bat problems. Try a few resets and see how that works for you before giving up on the ROM.
Oh, I might also mention I am not running any sort of set cpu app.
Click to expand...
Click to collapse
Funny that just the both of us are populating this thread.. But yes I too do not use any Set CPU or Task Killers..
Currently on
Mattc Leo 1.8 with hastarins r7.6 with 5-7mA battery drain on Stand by (Wifi, GPS,Bluetooth off, data on(but disconnects sometimes))....

I can confirm this too.

Im a little new to Android on the HD2, running Mdeejay eVo Sense v. 2.3 rEVOlution 7.7 Hasteran at the moment.
Im finding the battery life on v2.3 less then on v.2.2 so I'll try a few resets & see if it improves, thanks.
Oh, is it really necessary to run SetCPU or a task killer?
Im forever closing tasks with task killer & the though of a task being auto closed when I turn the screen off is comforting, but is it best to just leave things to the kernal?

The most consistent way I have found to get 4-5ma on standby was to use exceller's android loader set autoboot android and 3 secs.

I can confirm this too.
I am trying dual boot (http://forum.xda-developers.com/showthread.php?t=723200) to boot into Android right away to see if that leads to more consistent standby battery drain. (this was mentioned on another thread.)
I have abandoned TaskKiller and AutoKiller, made no diff in battery drain for me.
I so still use SetCPU to slow the CPU when battery gets low.

Juno-First said:
Im a little new to Android on the HD2, running Mdeejay eVo Sense v. 2.3 rEVOlution 7.7 Hasteran at the moment.
Im finding the battery life on v2.3 less then on v.2.2 so I'll try a few resets & see if it improves, thanks.
Oh, is it really necessary to run SetCPU or a task killer?
Im forever closing tasks with task killer & the though of a task being auto closed when I turn the screen off is comforting, but is it best to just leave things to the kernal?
Click to expand...
Click to collapse
For better battery life, setCPU is a MUST! Creating different profiles to change the cpu clock is huge in conserving battery; especially, the the screen off profile.
Ditch ATK and download Watchdog instead.

even hastarin himself is using android without setcpu. with kernels 7.6, 7.7 I get same batt juice as with setcpu, BUT less stuttering in general, i.e. android runs more smoothly.

Honestly I have found that every ROM I have used set cpu was a detriment to battery life.
I'm still not 100% that even task killer is helpful in some cases. I think that on the other hand has to do more with how you use your phone and what apps than anything. Some people can prob get away with it.

SetCPU is pretty much pointless now with the latest kernels, only thing it's useful for is overclocking, but even without it I've not found anything that can't run. Even graphically intensive games like Reckless Racing run perfectly fine at stock CPU speeds.
I've just updated last night to ShubCraft 2.0 DropMode and I get 6ma in standby, my battery dropped 9 percent in 8 hours of standby while I slept, and after a full day of using my phone from about 9am to 6pm tonight (texting, calls, wifi use, 3G use, picture taking, playing a few games and listening to over an hour of music) my battery only just hit 50% at 6pm. This is without SetCPU.

What i've done is just swap out the micro sd card for another one. I had the stock 16gb and replaced it with an 8gb micro sd card and i'm getting fantastic results.
Without any type of task killers or Set Cpu, i'm constantly getting 3ma - 9ma stand by readings from Current Widget.
I also downloaded Juice Plotter from the Market ( what a fantastic app IMO ) and it tells you how much time you have left on your battery as well as a graph detailing the percentage of power battery has used.
I can go a day to a day and a half with out charging my phone. I am in complete Android Heaven.
NOTE: Keep in mind that when booting into Android, when you hit the Haret, make sure that the hard key light are on.
I also have the auto sync off to save battery as well.

To get the 4-11 mA, just make sure the keypad lights on the phone are on when booting haret.(pretty much, boot asap)
Sent from my HTC HD2 using XDA App

alantak said:
I can confirm this too.
I am trying dual boot (http://forum.xda-developers.com/showthread.php?t=723200) to boot into Android right away to see if that leads to more consistent standby battery drain. (this was mentioned on another thread.)
Click to expand...
Click to collapse
After several reboots this is holding true.
Before when I making sure the keypad lights were on before booting Android I would still occasionally get bad standby drain, so I think that is myth.

Exceller's auto boot app = no battery drain!!!
szfjcr said:
The most consistent way I have found to get 4-5ma on standby was to use exceller's android loader set autoboot android and 3 secs.
Click to expand...
Click to collapse
GOLD!!!! PURE GOLD!!! Been trying to preach this for days now! The battery drain is eliminated by booting Android before WM/Sense fully boots. Has nothing to do with keypad lights being on or off. Hence, use Exceller's auto boot app set to boot 3 secs and restart your phone and let it auto boot. Battery drain ELIMINATED!!!!!
secano said:
To get the 4-11 mA, just make sure the keypad lights on the phone are on when booting haret.(pretty much, boot asap)
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
See above comment.

anush.isaac said:
This is most definitely true, might sound illogical or fake but I personally took battery logs when my drain was 58mA but could not find anything, I changed Kernels just to observe the same and I finally gave up but I accidentally had to reset my phone a few times as I forgot to put it on charge/freeze then after a few days I happened to see terrific battery improvement 5-8mA, I didn't know why but then I understood it was because of the resets..
Click to expand...
Click to collapse
When you guys say do a few resets do you mean pull the battery or just use the off menu?

danielefeldt said:
When you guys say do a few resets do you mean pull the battery or just use the off menu?
Click to expand...
Click to collapse
Just do a hot reset if your android buid has that option, even better power off and and reboot from windows

I'm using bangster v1.5 with hasterin 7.7. I only get 2-3 ma standby.
Sent from my HTC HD2 using XDA App

For me the problem was the SD card. I formatted it with 4098 (or similar)block size, copied the Android build back over the top and bang from 115-170mA to 4-9mA on standby!!! WOW.

What effects Battery the most?

Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.

Antartica or Panama? Where, when, how?
heaetman74 said:
Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.
Click to expand...
Click to collapse
Operating system? Screen colors? Flashlight for movies or photos?
Battery - energy loss or charge? Age - recycles from deep discharge? Plugged for longer than needed? Air temperature or silicon cased? Temperature with heavy energy drain?
Not a simple question.
Retired (medical) IT Consultant

As far as software goes, the biggest killers of battery I've noticed have been push notifications and wifi. Turning both of them off almost doubled my battery life. I now have my emails synched every 10 or 15 minutes instead.

In addition to wifi and push, a big one maybe the biggest, which is often overlooked, is screen brightness. These big giant screens burn a lot of battery. Keeping it as dim as you can stand it will actually save quite a fair share of battery

heaetman74 said:
Been trolling the forums, for a while, and I am wondering.. what effects battery life the most.. type of windows rom? the radio? kernal? or Android build?...
thanks guys.
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YOU THE USER
if you have researched and learned enough to know what needs to be done
then . . . .

huggs said:
In addition to wifi and push, a big one maybe the biggest, which is often overlooked, is screen brightness. These big giant screens burn a lot of battery. Keeping it as dim as you can stand it will actually save quite a fair share of battery
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I feel silly for not mentioning that one myself now

heres a funny thing i found, i replaced my Apacer 8GB Class 4 card with a Sony 8GB class 4 card. the phone use to hang with the apacer card.
the thing is, ever since i´ve made the change, the phone sucks up twice as much power.

Theres great ways to make your battery last here too:
http://forum.xda-developers.com/showthread.php?t=827762
Especially #8
Calibrating Android's battery read will allow Android to fully charge your battery, and if you have battery profiles in setcpu, then the app will scale your processor speed by a more accurate reading, giving you longer battery life. I did it on the couple of builds I use most, and it really does make a difference
And dont feel silly john, I sometimes take my enormous screen for granted too
Edit: hmmm maybe my class 2 is why i get good battery life, maybe a slower r/w speed sucks less juice?

well, i know all of the normal tricks.. like screen brightness, wifi off, email push...
i am just looking for a windows rom, a radio, and an android rom, to get the best battery life...
thanks again guys.

Have a look at my signature.
Data enabled, push every hour only 5mA in standby.
If it is in airplane mode it only uses 2mA most of the time. That's quiet good

From what I can tell, the single most important factor for better battery life is using an auto boot app, such as Exceller's, to boot into Android soon as possible. I set mine to auto boot in 3sec. If you let WM/Sense boot fully, you will experience higher than normal battery drain; around 60-70 mA drain in standby. Also, try installing Advanced Configuration Tool in WM and enable all options under Power Management. Have tried these techniques with pretty much every WM Rom and Android combo and average around 3-9 mA draw in standby with wifi, sync, gps and data all enabled. This translates to about a day and a half of moderate use for me. Also, remember that Sense builds tend to use slightly more battery than non-sense builds.

This method really works! The simplest way!
reocej said:
From what I can tell, the single most important factor for better battery life is using an auto boot app, such as Exceller's, to boot into Android soon as possible. I set mine to auto boot in 3sec (have asked for and If you let WM/Sense boot fully, you will experience higher than normal battery drain. Also, try installing Advanced Configuration Tool in WM and enable all options under Power Management. Have tried these techniques with pretty much every WM Rom and Android combo and average around 3-9 mA draw in standby with wifi, sync, gps and data all enabled. This translates to about a day and a half of moderate use for me. Also, remember that Sense builds tend to use slightly more battery than non-sense builds.
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I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.

loonglsk said:
I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.
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Glad I could help. Happy Androiding!

my phone tells me power in mV how does this equate to mA?

Droski said:
my phone tells me power in mV how does this equate to mA?
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It doesn't really, mV is a measure of state (what condition your battery is in), mA is a measure of change (how much power is currently leaving/entering your battery).
Download current widget, free from market, to track the current (= in mA)

loonglsk said:
I have trying different things for some times as why my HD2 was always 60mA+ power drain but some others reported as low as 5mA in standby mode. I tried different builds and different settings but none worked. I almost want to flash to change my stock rom or give up the idea of using Android.
Thanks to you! Follow your way, I now only 9mA with my stock rom. A considerable improvement in battery standby.
Thank you very much.
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What is an application u see HD2 Android power drain in standby-mode?

PeeHoo said:
What is an application u see HD2 Android power drain in standby-mode?
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Current Widget. Set it to update every 60 secs, and then leave your screen off for more than 60 secs, turn the screen back on, and check the widget.
Battery drain with screen off should be somewhere between 5-9 mA

Nice tips here guys...
My battery meter in the status bar looks about 60-70% full, but battery widgets say i have about 50%.
Does this mean that I need to calibrate?
I tried to delete the battery stats with Droid Explorer but it seems to be in read only? (It doesnt do anything when i click delete).
I guess I'll set up ADB and delete that way.
Also I seem to get better battery without LED me know, (why do i need this?)
Runnig MDJ revolution, 2.08.50 radio, stock WM ROM.

GeoMil said:
Nice tips here guys...
My battery meter in the status bar looks about 60-70% full, but battery widgets say i have about 50%.
Does this mean that I need to calibrate?
I tried to delete the battery stats with Droid Explorer but it seems to be in read only? (It doesnt do anything when i click delete).
I guess I'll set up ADB and delete that way.
Also I seem to get better battery without LED me know, (why do i need this?)
Runnig MDJ revolution, 2.08.50 radio, stock WM ROM.
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Click to collapse
Just run terminal emulator on your phone and type:
su
rm /data/system/batterystats.bin

oh, you can do this on the phone.
Thanks bro!
I hope to see improvements as my theory that the status bar battery reading vs widget battery reading being so different = it needs calibration.
Edit
I am now using Exceller's auto boot, and the my draw peaks are waaay lower, but the idle has gone up! (60-80 now...)