Database Users

Whacky battery life theory...

OKAY. As many of you know, I used to be pissed about my battery life until I hit the gold mine with one of raven's 800 kernels. Even after trying 10 of them, only recently did one of them hit the spot for my phone. As most know, the higher the battery temperature, traditionally - the higher the battery drain. I noticed that most of the YouTube videos where people are showing off their N1s didn't have cases on their phones. Now, I regularly use two different cases: A seidio snap and one of the gel-like hard/flexible cases. Recently, I have been using the gel one. I also have a friend that I work with whose phone on the same setup and same kernel gets half the battery life that I do and she is using the snap right now. This morning, I flashed Raven's new 800 kernel AND switched my case to the Snap. If you saw my posts, I got roughly 35 hours of light-moderate use and still had 19% left a few days ago on his 800 from 5/04. After upgrading the kernel, my battery was better than stock, but not great (losing about 3%/hour). I just took off the Snap case and am flying naked right now and think I've already seen an increase in battery life. Obviously, it is too soon to tell. That being said, I'm a computer guy, not a physics guy and I don't know the thermodynamics of the material. I can say that the Seidio Snap has a felt lining and is plastic which I think traps more heat. You guys may tell me I'm nuts but I'm posting a poll to see. Now, I know everything is going to be a little subjective, especially the word "moderate"; however, I think most people contributing in the kernel threads have a solid understanding of the general consensus of the word. Sorry if the poll didn't include every option but I'm just curious.

<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.

DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
Click to expand...
Click to collapse
I considerate moderate use around 30 minutes total web browsing, 10-30 texts, <1 hr of phone usage and a few e-mails. Even the iPhone can go longer than that (and I hate the iPhone). Also, coming from someone now on 800AVS kernels that can finally get over a day, 10 hours is not very good.

I found the difference between nekkid and a rubber/felt case to be neglegable if any.
Conversely I found some apps to be bad about it when it comes to waking the phone for refreshing data or keeping the system awake (or more awake) even after the display is off. My biggest battery gains were in curtailing a few apps. ymmv, best of luck.

10 Hour moderate use is ok.
But i get double that...
Recently testing the GSM Auto (PRL) mod and it seems to boost my phone considerably.
Unhooked it yesterday at 8.00 PM went for my night shift.
At work i have used it for 20 min. Music and 20-25 min of surfing and nothing else. The rest of the time it has been on standby.
Is now almost 8.00 am. 12 hour has passed and is at 73% left discharging.
Here is my hacks and settings:
ROM: CyanogenMod 5.0.6-N1
Baseband: 2.6.24.00.22U-4.03.00.21_2 (unchanged)
Kernel: 2.6.33.2 CyanogenMod [email protected] #1
Build: EPE54B
Radio is unchaged.. using what came with it.
HACKS:
The GSM Auto (PRL) mod. http://forum.xda-developers.com/showthread.php?t=670999
Beautiful Widget apk
Custom theme Cyanogen 5.0.6 theme with HelixLauncher2
http://forum.xda-developers.com/showthread.php?t=656868
Bluetooth, Wifi, GPS & Dataroaming are OFF at all times unless i need them
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
Keep in mind im a light phone user. I mostly use my N1 for data service.

Sindroid said:
SYNC is constantly OFF always!!!
Brightness is at 1-13 %, and i just boost it if i need it.
Click to expand...
Click to collapse
Honestly, I don't think kernel has anything to do with your battery life. At least not much.
I constantly PUSH 2 email accounts (never turn it off), I always have WiFi, BT, 3G and GPS on. I never turn them off. My brightness is at least at 75%, sometimes at 100%.
I constantly check up on Pocket Empires (game) for about 2-3 minutes every 1-2 hours.. do about 10 min calls.. check engadget, browse xda through an app a little..
And I get 10 hours. If I set brightness/sync like you, I'd probably get that battery life too. I got Cyan 5.x (latest), Amon recovery, stock kernel, stock radio.
I'm happy with my batt life, I can always swap to another battery that's always charged on the dock.. but I use the phone to its fullest and never have to wait for gps/mail/wifi.

hah2110 said:
Even the iPhone can go longer than that (and I hate the iPhone).
Click to expand...
Click to collapse
Didn't think that I'd have to point out that iPhone has a 600MHz processor, 480x320 weak-ass screen and it only has 1 app running at a time?

DarkDvr said:
<10 hour battery life is not crap. With moderate use that's what u get.
Can't vote in this poll.
Click to expand...
Click to collapse
I agree 100%. (Except I drive an Evo, not an STI)...
I get ~10 hours and that's just fine and as I would expect for this phone.
I am delighted that some people get more, but their experience is the exception, not the rule.

My battery life sucks; I only got 3 1/2 days :(

So this afternoon I decided to charge my phone for the first time in 3 1/2 days as the battery level dropped to 9%. I last charged it fully on Thursday night, and unplugged in on Friday morning. I unfortunately don't have screenshots to prove it because I plugged it in briefly (for no more than 10 minutes) to update to FRF72, and also rebooted.
If you are wondering, here are my settings:
- Wifi on (Sleep disabled)
- 3G on (Set to WCDMA Only in the secret menu)
- GPS on
- Sync on
I'm using stock Froyo (FRF72), and have had quite a lot of stuff running:
- Facebook
- Twitter
- Meebo
- FotMob (World Cup alerts)
- A fair bit of browsing
The only thing I haven't really done which I think kills the battery is listening to music. I listened to it for about 30 minutes on the train this morning the battery dropped from 32% to 16%.
So to the people complaining about the battery life being terrible: You're Doing It Wrong!

That's impressive if true. I've been getting really great battery life lately with CM and IR's kernel as well. I can go two days on a single charge, but I plug it in every night anyway.
I find that the biggest battery waster is phone calls. Maybe switching to EDGE would help with that, but I don't feel like it's worth the effort.

Lucky bastard. I get like 1day 4hours for typical use with Cyanogenmod 5.0.8 with 3G off, wifi off unless I need it, sync off, gps off, and maybe 200 texts sent a day and a phone call or two for like 5mins. The battery life is really bad for me...and has been ever since using CM but i can't go without it, I'm just too use to it now.

thelucster said:
So this afternoon I decided to charge my phone for the first time in 3 1/2 days as the battery level dropped to 9%. I last charged it fully on Thursday night, and unplugged in on Friday morning. I unfortunately don't have screenshots to prove it because I plugged it in briefly (for no more than 10 minutes) to update to FRF72, and also rebooted.
If you are wondering, here are my settings:
- Wifi on (Sleep disabled)
- 3G on (Set to WCDMA Only in the secret menu)
- GPS on
- Sync on
I'm using stock Froyo (FRF72), and have had quite a lot of stuff running:
- Facebook
- Twitter
- Meebo
- FotMob (World Cup alerts)
- A fair bit of browsing
The only thing I haven't really done which I think kills the battery is listening to music. I listened to it for about 30 minutes on the train this morning the battery dropped from 32% to 16%.
So to the people complaining about the battery life being terrible: You're Doing It Wrong!
Click to expand...
Click to collapse
That is good.
I only got 3 days but to be fair I did have to jump start my car with it, that may have upped the consumption.

i unplugged my phone 7.5 hours ago, and i am still at 95% . using stock froyo on 3g with wifi on.
i even took a screenshot but will post it later.

You're either a liar or didn't use your phone at all
I have serious doubts you can get that kind of battery life. I tried not using the phone at all with lots of services stopped and it could barely go through 2 days.
3 days is a bit too much.

3 and a 1/2 days on a single charge is great... I doubt u'd get much better battery life on any phone with the same features as the N1...

I get 6 to 8 hours on stock 2.1 - no fair!
-------------------------------------
Sent via the XDA Tapatalk App

I call shenanigans.
Either the OP is trolling or using a non-stock battery.

dude thats great battery life! i get like 1 day lol

lorin.bute said:
You're either a liar or didn't use your phone at all
I have serious doubts you can get that kind of battery life. I tried not using the phone at all with lots of services stopped and it could barely go through 2 days.
3 days is a bit too much.
Click to expand...
Click to collapse
if i don't do anything i also can get 3 days. but i play so much that i have to charge every 7 hours my tipical day is something like this:
Listening music 3 hours straight (i travel 3 hours)
Reading the news
Browsing the net
sometime a little talking
playing with the phone
and when i arive i got 60% left after 3 hours. i think it's impressing but i got better battery on my Hero. i also carry a power pack with me as emergency. i can almost charge my phone twice

My wife gets that on her Hero running 2.1 (was also getting that running 1.5).
I have a hard time getting a full day to be honest. One thing I've always wondered is what kind of reception these people get and how they store their phones.
At home and at work, my 3G reception goes from 1-2 bars while I'm connected to Wifi. I find this drains the battery.
I also carry my phone in my pocket without any case whatsoever.

commodoor said:
if i don't do anything i also can get 3 days. but i play so much that i have to charge every 7 hours my tipical day is something like this:
Listening music 3 hours straight (i travel 3 hours)
Reading the news
Browsing the net
sometime a little talking
playing with the phone
and when i arive i got 60% left after 3 hours. i think it's impressing but i got better battery on my Hero. i also carry a power pack with me as emergency. i can almost charge my phone twice
Click to expand...
Click to collapse
Which power pack do you have?

lorin.bute said:
You're either a liar or didn't use your phone at all
I have serious doubts you can get that kind of battery life. I tried not using the phone at all with lots of services stopped and it could barely go through 2 days.
Click to expand...
Click to collapse
Admittedly this weekend I haven't used it as much as I usually do, however even so I still get pretty good battery life. I've had quite a few occasions when I've easily had 2 days of battery life. I don't understand how people get less than a day.
Here are a few things that I have noticed definitely help:
- If using 2.1, install a custom kernel. On stock 2.1 I barely got a day and a half.
- Connect to wifi where you have it, and set the wifi sleep state to none. Although wifi uses more power than 3G, when it is idle it is a lot more efficient, and due to the increased bandwidth it can be idle longer. You also save on your data plan. You may also want to disable the feature to notify you of open wifi networks, however I don't know if this has an effect on battery life (I suspect it does).
- If you are in an area that has 3G coverage most of the time, in the secret menu set it to WCDMA Only. This will prevent it falling back to the slower and less efficient GPRS or EDGE.
- Keep an eye on what apps are using up the battery life. It is rather easy to accidentally create a service that prevents the CPU from sleeping which will quickly kill the battery. If you find one let the developer know and / or find an alternative.
- Turn off things you don't use (i.e. Bluetooth).
When I left the office this afternoon my battery was at 76%, and it has no dropped to 65%. On my 30 minute subway journey home I listened to music, however I also had no coverage. I'm not sure whether this drop is mainly due to music or having no coverage, so I'm going to investigate more. The battery usage panel says that 'Cell Standby' has used the majority of my battery since it was last unplugged, and it also recommends to enable airplane mode when in an area of no coverage. I should probably also note, that other than this I'm always in an area of strong coverage (yaye microwaves!).

I got about 3 days without using the phone AT ALL.
On a fresh brand new N1 with Cyan ROM.
3 days with moderate usage is false, I'll put money on it.
There is no way that is possible yet with a stock battery no matter what ROM you're using.
If you want to confirm your claim I'll be happy to see the screen shots.

naturefreak85 said:
Which power pack do you have?
Click to expand...
Click to collapse
I'm using the Phillips Power2Go http://www.philips.co.uk/c/power-so...=85F14C383C63DDF5599FE5DA0A89CD07.app102-drp1

A followup from my music tests: Playing music for 25 minutes on low volume dropped the battery percentage from 64% to 61%, so I'm guessing that isn't the major killer I thought. I'll try switching on airplane mode before I go on the train tomorrow and see if that improves things

I would gladly trade you my 8 - 10 hours on a stock n1 with moderate use for your 3 1/2 days. That is with everything off. If I start playing a game or listening to the radio I better have a charger close by. My phone is only about 2 months old if that.

liar
I'd be happy with ONE full day of a battery. I'm positive your not getting 3. N a half. Stock kernel. Stock froyo. Basic battery nd decent usage?? Ill donate...no give yield $50 if that's so..
thelucster said:
So this afternoon I decided to charge my phone for the first time in 3 1/2 days as the battery level dropped to 9%. I last charged it fully on Thursday night, and unplugged in on Friday morning. I unfortunately don't have screenshots to prove it because I plugged it in briefly (for no more than 10 minutes) to update to FRF72, and also rebooted.
If you are wondering, here are my settings:
- Wifi on (Sleep disabled)
- 3G on (Set to WCDMA Only in the secret menu)
- GPS on
- Sync on
I'm using stock Froyo (FRF72), and have had quite a lot of stuff running:
- Facebook
- Twitter
- Meebo
- FotMob (World Cup alerts)
- A fair bit of browsing
The only thing I haven't really done which I think kills the battery is listening to music. I listened to it for about 30 minutes on the train this morning the battery dropped from 32% to 16%.
So to the people complaining about the battery life being terrible: You're Doing It Wrong!
Click to expand...
Click to collapse

I have no choice but to charge every day with my use. I've found that the battery is usually empty after the screen has been on for about 3 and a half hours. Where my display accounts for about 70% of the battery drain. I always have the brightness at maximum though so I guess it's to be expected.

What battery issues?

Before getting this phone I did my fair share of research on it and every review said the same thing, super phone...terrible battery. Now I never owned a touch screen phone before this so I had no idea what the desire, Samsung or iphone battery life's were like and all these reviews were causing me some concern and led me to believe that my phone would be dying over 9 hours or so due to lack of power.
Now having had my desire HD a few days I just want to say wow what was all the fuss about? I get a full 24 hours use out of a full charge without taking any precautions to save the battery. When I'm at home I leave my wifi on continuously, it was on for a good 14 hours yesterday. When I go out I switch over to 3g and turn wifi off...only used this for an hour or too since I wasn't out much. And remember I only got this phone a few days ago...so the usage has been pretty heavy as I fiddle around with it, doing some web browsing, have all my accounts and widgets syncing, play a few games, making some calls. On the first day I got it yes I drained the battery in 9 hours but that was super heavy use...i.e. I didn't put it down once in those 9 house.
This phone easily makes it through 24 hours with perfectly normal use without having to worry about the power levels. Great phone and I love my first android to bits!

I'm glad to hear some positive things about the battery as Verizon has the incredible HD coming I plan to purchase when they get LTE.One thing though that you may not know is your wifi wasn't running continuos, it shuts off when your screen shuts off and comes back on when you turn it back on unless you fool with the wifi settings and tell it "never" turn off. But overall I'm glad to hear that
Sent from my SCH-I500 using XDA App

Does it drop the wifi when the screen is off by default? Not so on my standard desire as far as I am aware - unless this is something new in the HD rom?
Good to hear the battery is lasting well according to the op. Little 3g use though it seems and it is this that cains my desire.

There seem to be some mixed opinions on the battery life. I use mine quite heavily and have to admit that the battery life isnt the best that i've had but i'm happy with it as it lasts me what i consider a 'normal' day, ie, take it off charge at 7.45AM and after a days use (calls, internet and syncing all day every 15 minutes, music, wifi and bluetooth left on) and it gets me home for around 7PM with a bit of charge left. That for me is a normal day, if I know i'm doing anything else i'll put it on charge in the office/car. If I need satnav i'll always use a charger anyway.
So... For me it's OK, but not good, could have done with a higher capacity battery.

No Battery Issues At All
I received my HTC Desire HD 2 days back and have no worries about the battery at all.
On first charge it lasted over 12 hours and I was using it VERY heavily. I'm currently on my second charge now and after 24 hours of medium to high usage, I have 40% remaining.
I always have my syncs set to update/refresh as often as possible, so mail is every 5 mins, weather every hour, facebook every hour, have Google and HTC Sense syncing too. I've also left my wireless setting to stay connected even when the phone is on standby and am getting this performance out of the battery.
So it just leads me to believe that anyone saying this phone's battery is poor must not have used a smartphone before.
And with regards to the WiFi settings, you have 3 options. Go to Settings, Wireless & networks, Wi-Fi Settings, press Menu then select Advanced. It's the Wi-Fi Sleep Policy you want to take a look at. Like I said, you have 3 options; After 15 min, Never when plugged in and Never. Someone said you can have it turn off whenever you go into standby, this is not entirely accurate. With the After 15 min option, it turns off WiFi if you are in standby for 15 mins. With Never when plugged in it's the 15 min rule again except when plugged in. With Never, it just constantly stays on.
By default it is set to Never. I've left it as this to test how much it eats up the battery and I have no issues.

P.S. It's always best to do a full charge/recharge when you have a new battery to get it to use the full capacity. Charge the phone fully and use it until it dies. Charge it fully again, not taking it off charge until done, then let it die. Do this a few times and you should see the capacity go up. After this you can charge however you like although after time (months), you may see the capacity seem to come down, in which case do this again a few times and you should be good to go.
The battery on my HTC Hero came down to lasting 12 hours after 9 months. Did this a few times and not it lasts about 36 hours.

Yes I have my wifi set to never switch off...it still does all its sync'ing and mail retrieving whilst in stand by mode. I even went into the battery usage last night before I charged it up again and it had been running on the battery for 24 hours and 15 minutes and I checked the wifi usage and it said it had been in use for 13-14 hours and it had only used a small amount of power (less than 12% if I remember correctly)

i agree..
Its just as good if not better then the other smartphones i had.
battery is good.
just keep the brightness at 30%

2 days since I charged my Desire HD and it's at 40%, much better.
Wifi to turn off after 15 mins in standby, brightness at 100%, mobile data is turned off unless I'm out of the house (in that case, I turn off wifi) and that's with Buzz's overclocked 1.5GHz kernel.

I think any time mobile data is turned off the battery life is going to sky rocket!
Fortunately, by using ultimate juice you can automate this - using wifi when available and mobile data at other times without having to manually switch. Better still, this leaves both off unless the screen is active. Made a hell of a difference to my Desire.

i keep mobile data off (only turn it on when i'm out of range of a usable wi-fi)
screen brightness is at 30%
I use "Set CPU" to lower the CPU to 256Mhz when the screen is off.
I get all my mail via gmail.
there's also a hidden app (can't remember how to start it but it's a *# code)
you cna use that to set what type of mobile network it looks for (I've defaulted to use GSM but use 3G when required).
This keeps the mobile form constantly looking for a 3G signal when youre in a bad signal area (or in the bottom of your bag!) But this won't affect data, only voice calls.
The constant looking for networks is one of the biggest drains on a mobiles battery after the screen/light.

s0litaire said:
there's also a hidden app (can't remember how to start it but it's a *# code)
you cna use that to set what type of mobile network it looks for (I've defaulted to use GSM but use 3G when required).
Click to expand...
Click to collapse
Please try and remember, I would like to experiment with this ... unless it's for the 3 network only?

I've had about 8 HTC phones in the past few years and I've always been very pleased. Lime many others before buying the DHD I did my research and got a little worried about battery life. I wish people would just post opinions for the sake of it (especially in the first day or two of use) because it's very misleading. After having the DHD for a while now I can honestly say that I'm really impressed with it especially with the battery life.
I previously owned the HTC Desire and at first had much worse battery than the DHD mainly because of the AMOLED screen and it needed some tweaking after root. At the end I was getting at 3 days of battery with all the common daily abuse.
With the DHD I got 2 days right form the start and you know what it's like in the first few days. You pull it out for no reason, play with it, show it to everybody try everything and even so it lasted 2 days. Now that I'm back to just the normal use/abuse I get 3 days with no root, no custom rom or other tweaks.
SO anyone doubting the DHD battery life, FEAR NOT it's a great device!!!
G

I agree great device but could you please put your battery up on ebay for auction as I think you've got an amazing battery and could make Fair few hundred pound from it or even send to htc so they can use as prototype and make all of us replacements that lasts days like yours.
I personally think the battery sucks but with the hardware you carnt expect much more from the battery thy choose for this device.
Sent from my Desire HD using XDA App

My battery is about a week old. It wont make it through a working day (8 hours) if i use the phone for anything. It wont even last a morning (2 hours) if I'm making calls and browsing net more intensively.
Sent from my Desire HD using XDA App

sonnysoul said:
So it just leads me to believe that anyone saying this phone's battery is poor must not have used a smartphone before.
Click to expand...
Click to collapse
Not true. I've had several smart phones, and I can't last a full day doing the same things that I did with my Hero. I don't have anything syncing regularly either. Weather every 3 hours is about it.
wmfreak said:
I previously owned the HTC Desire and at first had much worse battery than the DHD mainly because of the AMOLED screen and it needed some tweaking after root. At the end I was getting at 3 days of battery with all the common daily abuse.
Click to expand...
Click to collapse
3 days of use? By my reckoning the main dictator of battery life is screen on time. I find that I get 3 to 4 hours of screen on usage time out of a charge. This would equate to an hour a day to last for 3 days. Unfortunately I use my phone a lot more than that.
I'm not doubting other people's opinions, but I'm seriously starting to think that I got a dud battery or something.

Try *#*#4636#*#*
xspyda said:
Please try and remember, I would like to experiment with this ... unless it's for the 3 network only?
Click to expand...
Click to collapse
Sent from my Desire HD using XDA App

Blinkydamo said:
Try *#*#4636#*#*
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
Yup that's it!
*NOTE*
i'm not sure what this setting may do to your phone on your network, but take note of all settings before you have a play around...
"call" that number to get the "Testing" screen up.
go to "Phone Information"
Scroll down and change "WCDMA preferred" to "GSM auto (PRL)"
See this post for more info:
http://forum.xda-developers.com/showthread.php?t=688492

Thanks both Blinkydamo and s0litaire.
Some interesting stuff there, not sure how it will help me if at all but I guess I will have to experiment...

I have HTC's since it came from QTEK.. I had 5 HTC before Desire HD.
Before this I had a HD2 (leo), and matching the most options possible between them, this is the faster draining phone that I had after HTC diamond.
Actually I've always thought that the HD2 due to the screen size had a very good battery.
I've been using desire HD a LOT since it's the first android that I had put my hands on my own, so I can be due to that, but most of the time I getting like 5hours or less from it which is getting me frustrated for the first time. Also there is a problem with this model, they probably won't be able to do a oficial expanded battery with this type of battery slot, due to the configuration.
However, I'll try to avoid touch it too much than the "normal" and see how it goes.. But I'm pretty sure that it's way faster draining than my older HD2.
BTW, I'm using "GSM auto (PRL)"

[Q] Desire Z : Really Inconsistent Speeds + Battery Issues

Friend has a new Desire Z (bell, unlocked). Using it on AT&T network.
When at a house, and we use WiFI (30Mbps DL, 25Mbps UL), the speeds are VERY inconsistent. With my iPhone 4 using speedtest.net, it shows up as 20/15 each time. (WiFi is a little slower than the modem).
With the Desire Z, we get 15/10 (which is fine/acceptable). Then 3 minutes later we do it, we get 5/2. Without even moving the phone or touching the modem connection (not downloading anything on the computer), the connection just gets slower. Then it might be fast or slow, basically it's a toss-up.
The first time we noticed the issue is because when we are outside, we get HSPA speeds of 2.5/1.0, then randomly decreases to 0.1/0.05. HUGE difference. And VERY inconsistent. He is using a microSIM from iPhone 4, with an adapter, so we figured maybe the SIM card is getting loose at certain points? However, the WiFi is also inconsistent in addition to the HSPA, so it's probably not that.
What should I do? Is this the situation where I have to flash a new radio or something? (Please suggest others if I am wrong).
Thanks!
---
Also, his battery is kinda weak. The battery health is apparently clean/healthy. He came from an iPhone 4, where he would have 3G, WiFi, and GPS on at night but not actually using them. Wake up, and 3% battery loss, maybe 5. WITHOUT using them, just having them on.
Now, with the Desire Z, we have the WiFi + 3G on, but NOT the GPS. He is losing 20%-25% in 8 hours without even using the phone.
Information about battery shows a high Cell standby (25%) and Phone idle (25%) percentage. When going into Spare Parts > Partial Wake usage, we didn't find anything really fishy. BUT we had rebooted so perhaps some info may have been lossed. Should he just go to sleep tonight and report the Partial Wake Usage statistics again?
We have a feeling it may be some apps refreshing at night.. But he clears all the apps with Advanced Task Manager except for like Facebook (2 hour interval refresh), GMail, and Google Voice.
I highly doubt a 20% battery decrease overnight is normal.. My mom's Atrix only loses about 5% overnight, with the same parameters I gave before.
I thought it may be a bad battery, BUT the phone idle + cell standby are abnormally high.
Thanks!

Why is this in General as well as Q&A?

Put this in Q&A, didn't get any answers. Went to General, saw that more people posted there, even for Q&A's. Have an actual problem that research didn't help much with, so made a thread. If necessary, I would be glad to remove the thread on Q&A.
By the way, thanks for the answer .

Would you be able to post your software specs? Radio version, rom version, android version? My Bell DZ only loses about 3% per night if I don't plug it in to charge. I, like you, have wifi, gps and hspa enabled with no huge I'll effect.
The stock battery is usually alittle weak. Being a 1350mA, it doesn't have the capacity either, but that is why it is user replaceable. I picked up the mugen 1800mA battery that gives the phone the stamina to last a full day of full use or 2-3 days of light use. I forget how much I spent on it but it was definitely an upgrade.
As for the signal issues, we would need to know what you are running. The latest .30 radio is recommended for AT&T if I remember correctly. Also, the type of rom (stock or custom) might give us abit more insight.
Sent from my HTC Desire Z using XDA App

I lost about 10% overnight today I believe, possibly 15 (don't remember exactly what I left off at).
Not sure on all the stats because I don't know how to check them but
Android Version 2.3.4
Cyanogenmod 7.1.0-RC-Vision (seller did it for me)
What is the radio version? I think that is baseband not kernel? If so its 12.52.60.25U_26.08.04.30_M3
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If anyone knows about the sporadic data, that'd be helpful. It does seem that if I go into airplane mode a few times it fixes itself, but I doubt everyone does that to ensure fast HSPA speeds
Sent from my HTC Desire Z using XDA Premium App

I've never used CyanogenMod Custom ROM's before, so I can't speak from that experience. I can, however, tell you that while running RMK (and team's) Custom ROM's (Virtuous, G-Lite, Unity) and now MIUI, battery life has been excellent, even with the stock battery. The current build of MIUI lasted for about 15hrs on a day of full use, RMK's ROMs would last about 12-15hrs of moderate to full use on the stock battery. Alot of the custom roms have different power management settings and tweaks, if you're comfortable with flashing, I would recommend another ROM and see if that helps with either of your problems.
If you like the Vanilla/AOSP look of android, try RMK's G-Lite ROM. It is very lightweight, fast and stable. I remember having one issue with it, but it was a very small issue and didn't stop me from using it for a few months.
I am currently on MIUI English 1.7.1 and with moderate use I am sitting at 50% charge spent over 2 days. Moderate for me is about 300 texts with about 10 phone calls and a total of about 4hrs of web browsing.
I can link you to those roms if you need, but they're all located in the Dev section. Your radio seems like it's on the right version, so perhaps it's not the issue. Try running another rom for a week and see if that helps to any degree.

I re-calibrated the battery, let it die, charged it up, let it die, charged it up. I followed the instructions to the letter and all that.
It was at 100% when I went to sleep. Woke up 8 hours later, 74%.
Settings > Battery shows nothing high 40% for cell standby and phone idle. Everything else (Facebook, etc.) REALLY low.
Then I went to Spare Parts > Battery Usage, Partial wake usage, everything incredibly low as well..
I will try Watchdog, but could it just be a bad battery? Or maybe should I try a different ROM?
Thanks!

JayXL14 said:
I re-calibrated the battery, let it die, charged it up, let it die, charged it up. I followed the instructions to the letter and all that.
Click to expand...
Click to collapse
NO! This is poor recommendation, and people need to stop perpetuating it. People keep recommending this, but its NOT a good idea to let the battery drain until it dies, just to calibrate the battery meter. While the protection circuit on the battery will USUALLY prevent over discharge, it is not 100% failsafe. There is a slight possibility that over-discharge of the battery will happen, and then the battery is no good, and will need to be replaced. Unless you have a special battery meter with a "boost" function (which most people do not have access to). See the following table on Battery University, where it says for Li ion batteries: Discharge: Prevent full cycles
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Best practice is to charge to 100%, drain to about 20%, repeat a couple times. No need to go below 20%. The battery meter is not very accurate to begin with, so there is no value added going to 0% versus 20%, but you risk killing the battery.
Plus people keep abusing the terminology. You are just calibrating the battery meter, not "calibrating the battery". When people say this, I think its just a holdover from the old days of NiCad batteries, where you had to condition/discharge the batteries periodically to prevent memory effects (Li ion batteries do not suffer from memory effects, and require no period cycling).

Can't really speak to the Atrix or the iPhone. But the battery drain on the DZ described by the OP is right in line with what I've seen. I also have an unlocked Bell DZ on AT&T, and battery drain of 2-4% (on various ROMs and couple different radios) when the phone is completely idle, screen off is totally normal. Best I've seen on my DZ is with the Virtuous Unity ROM and the .30 Gingerbread radio, where I've seen somewhere around 1-2% drain per hour when idle.
One possibility, is that the different phones are not reporting % battery the same way. As I've mentioned above, the battery voltage meters on phones is not very accurate, maybe in the range of 5-10% accuracy (although, even with this, the drain on the DZ versus the ATrix and iPhone still sounds inconsistent). But what is more important is how many hours of usage you get before needing to charge.

Thanks for the info.. Ill try charging that way.
And I honestly think the battery is just reading it wrong. It honestly feels like it dies faster idle than not, go figure. Yesterday, at like 10% battery, I wanted to kill it off, and played a game for like 10 minutes straight, still 10...
Then I tried leaving the flashlight on for 10 minutes on and it maybe lost 1
How is that battery I recommended from dealextreme though?
Sent from my HTC Desire Z using XDA Premium App

It's interesting to see all the troubles that people are getting on the DZ...
I've had my DZ for about 6months and never seen any of the reported problems.
My 1350mha will last me on a frequent usage near 24hrs and if I'm using it lightly like when i'm busy at work... almost 2days worth.
Mind you I'm running Cyanogen MOD7. No GPS. Wifi is on and I use JuiceDefender.
Cheers mates.

Last night, I charged my phone to a complete charge before going to bed to see what kind of drain I would see overnight. After 9.5 hours, my battery had only lost 2% sitting idle. That is with 3G on, but no Wifi or Bluetooth enabled.
The phone idle accounted for 47%, cell standby 48% and Android system 4%
While it seems remarkable, I'm still not convinced that its not my phone incorrectly reporting the battery level. On a typical day when I pull my phone off the charger, the first 10% is very slow to drain. Today, I have sent a few text messages and played maybe 3 minutes of word feud. That has drained 6% of my battery.
We will see where I'm at later in the day. I suspect that the actual level is lower than the 94% it is reporting. Typically, I get between 12-16 hours of usage, depending on how much I play with my phone.

Well I am at nearly 23 hours on this charge. Have used the phone rather lightly during the day. It sat idle for about 9 of those hours while I slept last night.
Conclusion: Idle drain is very minimal on my device and looks as though the percentage was being reported rather accurately. I'd say if you're having a lot of drain while sitting idle, do some digging and find what it is.
More info:
Facebook: update 1 hour
Gmail Sync: 1 hour
Fancy Widget update: 1 hour
Brilliant Quotes widget: update 1 hour
Light Bluetooth usage (about 15 minutes)
Wifi on all day (not overnight so about 14 hours total)
Screen brightness set at about 50%
Average signal strength: -100dbm

Battery life.......Does it really matter?...uhhh NO!

I read so many threads and comments complaining about "battery life"
Turning this off and that off, not using this app or that app. Dreaded enemy "wake locks". Turning brightness down and generally Not using all these great devices have to offer to squeeze out more battery life. Even to the extent of over 24 hours.
We have a phenomenal and powerful device that does a whole lot with a huge screen and a ton of great BG apps updating all kinds of information we enjoy these devices for.
MOST of all we all have the (getting rare) opportunity to swap out an inexpensive battery in less than 30 seconds be up and running for another 5-10 hours depending on our enjoyment and use.
Do people not have electricity? They cannot charge every night? They can afford a $600 phone (or $300 subsidized) and $600 plus a year for service but cannot buy a $20 battery in order to actually USE the device as designed and go through all kinds of contortions, apps, settings, and worse, anguish at running out of juice after (gasp) 8 hours?
People getting hung up on "benchmarking" and posting screen shots of phones on battery for 3 days...(of course rarely used) to squeeze and extra 30 minutes.
TURN IT OFF!! bet the battery lasts well over a month. You win!
I guess I just don't understand the "issue" with a device where batteries can be swapped out so easily.
I get maybe 10 hours normally with everything on and at minimum updating. I have infinite screen on and turn it off when I am done using it. (hate those timeouts while reading something). FB and news updates at minimum. Maps always running latitude. If its there its on BT, Screen rotation, GPS, I just don't worry about battery life as I would rather carry an extra battery in my desk at home auto or work and in my wallet than not USE the device as designed.
Personally I would never buy another phone without the ability to swap out a battery lest I would gain have to "ration" my use of such a great device which would be akin to a witnessing a gay man win a date with a single and seductive Angela Jolie . Why bother?
Am I alone here? Anyone else consider battery life as much a non issue as I do on these Samsung phones?

I'm with you on this one. Why do all of that stupid things if you can solve it with $20 battery.
Sent from my GT-N7000 using xda premium

A lot of the battery life threads are related to abnormally high battery drain.
As an example, on GB I would about 1% battery per hour if the phone was idle.
When I upgraded to LPY, I was losing 2-3% per hour, and sometimes higher, because the phone was not going into deep sleep.
This might not seem much of a difference for just 1 hour, but over the course of a day, it is a huge difference.
Now I'm on LPF, my battery drain is about the same, or lower than GB when idle.

richlum said:
A lot of the battery life threads are related to abnormally high battery drain.
As an example, on GB I would about 1% battery per hour if the phone was idle.
When I upgraded to LPY, I was losing 2-3% per hour, and sometimes higher, because the phone was not going into deep sleep.
This might not seem much of a difference for just 1 hour, but over the course of a day, it is a huge difference.
Now I'm on LPF, my battery drain is about the same, or lower than GB when idle.
Click to expand...
Click to collapse
I guess "abnormally high" is debatable. For me it would be a 80% battery crapping out before then end of a 2 hour movie.
A day is only 24 hours long and I assume people will sleep for 6-8 hours so Even a 5% drain per hour would mean more than 16 hours of standby with 20% remaining!! How can that be an issue? I doubt my phone "deep sleeps" I have BG apps running all the time with notifications. One extra battery solves all issues. No need for special apps, tweaking this and that, flashing this and that simply for battery life.
If people sleep 6-8 hours during a 24 hour period they can easily and consistently charge their batteries. A 3% drain per hour would not be an issue. If we watch movies and play games we already know the battery will drain within a few hours. Pop in another battery and brand new again.

You are assuming that people are always near a power source.
I am normally near a power source. I am either at work and charge via USB or in my car or at home.
The issue is the past 3 days I was out and about (malls, hotels, restaurants and so on) and was not near a power source for more than 10 minutes. My battery died in about 4 hours of usage. Mostly checking email, instagram and facebook.
I keep my brightness at full strength by the way (unless if the lights are off in bed).
Yes, so battery is an issue.
Not everyone is constantly near a power source.

So you think if I put my fully charged Note into Airplane mode when I go to sleep and wake up in the morning just to find out to my surprise that I lost 32 % of battery life in six hours is normal? In airplane mode? On official update via Kies, never rooted, never anything custom? That is normal to you? Wow, you are either stupid or work for Samsung. If you work for Samsung can you help me to get my GB battery life back? I have already spend good money for the phone, I am not willing to spend a dime extra for another battery on 6 months old phone.

If your phone is working as intended, battery life issues are not really an issue.
It basically means your phone sleeps when its supposed to.
However, some devices never go into deep sleep due to some issue with kernel or a rogue app. Thats where the battery problem comes in.

carlitos66 said:
So you think if I put my fully charged Note into Airplane mode when I go to sleep and wake up in the morning just to find out to my surprise that I lost 32 % of battery life in six hours is normal? In airplane mode? On official update via Kies, never rooted, never anything custom? That is normal to you? Wow, you are either stupid or work for Samsung. If you work for Samsung can you help me to get my GB battery life back? I have already spend good money for the phone, I am not willing to spend a dime extra for another battery on 6 months old phone.
Click to expand...
Click to collapse
Thats not normal.
I turn off data and wifi on my Note when I go to sleep (6 hours also) and I loose about 5 to 10 %.
This is with telephone signal only. No data or wifi.

to the post #7. So how come it didn't happened in stock GB previously? In GB I lost about 1 % overnight when in airplane mode. Reliability of batteries on this phone is a big deal, unfortunatelly.

Battery is always an issue. Nobody likes running to the charger every 3 hours. They want to charge and preferably when we are not using it, when we sleep.
So yes, it does not comply with expectatoin with continuous use. So yes its an issue. At least for me
Next to this having the enduser juggle with what wakelocks are or other battery eaters are dont help much. That counts for all smart phones.
Sent from my GT-N7000 using Tapatalk 2

There is also the issue about well behaved v badly behaved apps. I've installed apps and my battery life has plummeted, normally due to the app writing tons to the system log as it doesn't run well on my device.
In that situation it's nice to know the phone generally isn't sucking masses of juice itself so you aren't caught out and about with no battery left.
As the OP says, I guess I could carry a spare battery, but I could also carry a spare phone (my old Nokia 6310 used to last weeks on a charge) - and I don't want to do either. I want the battery on my phone to survive general use and still be able to be used for calls if needed. For me, it's not about €20\$20 for a battery, it's about the hassle of having to carry another thing around with me all the time and make sure I'd remembered to charge the damned thing when I actually needed it.
Personally, I use my phone like a tablet and as a phone and generally get 1-2 days out of it no problem. That said there are definitely some battery drain issues with the official German ICS build and it's worth protecting yourself against unnecessary drain if possible.

carlitos66 said:
, I am not willing to spend a dime extra for another battery on 6 months old phone.
Click to expand...
Click to collapse
And there is your only problem.........it's not "airplane" mode while you sleep. You could charge while you sleep. Again problem solved.
Sent from my GT-N7000 using xda premium

CorruptedSanity said:
You are assuming that people are always near a power source.
I am normally near a power source. I am either at work and charge via USB or in my car or at home.
The issue is the past 3 days I was out and about (malls, hotels, restaurants and so on) and was not near a power source for more than 10 minutes. My battery died in about 4 hours of usage. Mostly checking email, instagram and facebook.
I keep my brightness at full strength by the way (unless if the lights are off in bed).
Yes, so battery is an issue.
Not everyone is constantly near a power source.
Click to expand...
Click to collapse
I happen to believe it's asking far to much of a device once used only as a phone and now as a notebook computer, music player, movie player,gaming platform, big screen, GPS, on and on to be able to operate without expecting batteries to wither within hours. I bought extra batteries so I can use all the functions without worry. There are performance issues people strive to enhance. I get that. But battery life is counter productive to enhancing performance.
I cannot understand all the teeth gnashing about battery life with all the options available Especially those of us who are power users. . not the least being charging while asleep. So many post battery loss while sleeping...... That's what chargers are for.
Sent from my GT-N7000 using xda premium

tbong777 said:
I am assuming people sleep near a power source. Is that a reach?
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Click to collapse
Sometimes. I go to music festivals where we camp for up to 5 days at a time. I may have access to a powerpoint for 30 mins a day, but not always. I carry spare batteries, but that doesn't mean I want my phone sucking my battery like crazy.
When travelling around, I use my phone more often than normal (gmaps etc)... If I'm away from the hotel for 12 hours +, again, having decent battery life is not an unreasonable thing to want.
My Desire HD (yes I know, smaller screen, slower cpu), could pull over 30 hours out of a battery with conservative use (without turning the radios off).
I still wouldn't give up my Note, but having to recharge each time I get home is pretty annoying.

Ha, ha!
I find it funny that a post complaining about people complaining about battery life ends up with people's comments complaining about battery life!
Seriously, though, when those rogue apps steal my precious battery, I get annoyed. I paid for the damned thing, and I want to use it when I want to use it, not find it is half-drained.
I use it pretty normally, and charge it every day (new batteries are cheap). I carry a spare in my wallet too.
I sometimes spend four hours a working day on the phone, BT all day, plus an hour or two screen and WiFi on. If I have managed it OK (by killing battery stealing apps) I get about 50 to 60% left. If not, I can be down to 30% after that. That may not be enough for the rest of the day.
Why should it be a problem that people like to get a full day from one battery? It is not difficult, although you do need Root. Shame on Samsung that it is necessary, when it is clearly possible.

[
jeromepearce said:
I find it funny that a post complaining about people complaining about battery life ends up with people's comments complaining about battery life!
Seriously, though, when those rogue apps steal my precious battery, I get annoyed. I paid for the damned thing, and I want to use it when I want to use it, not find it is half-drained.
I use it pretty normally, and charge it every day (new batteries are cheap). I carry a spare in my wallet too.
I sometimes spend four hours a working day on the phone, BT all day, plus an hour or two screen and WiFi on. If I have managed it OK (by killing battery stealing apps) I get about 50 to 60% left. If not, I can be down to 30% after that. That may not be enough for the rest of the day.
Why should it be a problem that people like to get a full day from one battery? It is not difficult, although you do need Root. Shame on Samsung that it is necessary, when it is clearly possible.
Click to expand...
Click to collapse
Lol I was seeking those who don't have issues. And was hoping for a discussion on how they deal with battery life without rationing or tweaking....not more complainers
It's a problem of unrealistic expectations.IMO When you look at the device it self and what it's capable of.
Yeah Samsung could have put a larger battery and fatter back on the phone but people would complain about that. Those solutions are available for power users as well. I think we are lucky to have a device where we have options to solve a basic issue other than not using functions. Apple and HTC do not have the same luxury.
Got to go........ battery is di

I'm a light user with the occasional call and sms and my battery last ~6 days. Phone is 3 moths old. However, I find that my battery usage is very dependent on signal strength. I usually get 4 bars and when that happens battery drains like 10% a day and when it is down to 1-2 bars then it can be 3 times that. I guess I'm fortunate that I get 4 bars most of the time in the office and at home.
I have a battery monitor widget installed and I must say that it makes me paranoid of using the phone and causing high drain. May uninstall it soon and use the phone as it should be used.

My expectations are pretty much met when it comes to battery life of the Galaxy Note. It lasts a whole working day. That's all I need. And for exceptional situations when I don't have access to a socket I have got a spare battery.
It's clear that the Note drains the battery really fast if it's in use. Just look at the screen . I also agree that it's annoying if the battery is empty after only 1/2 working day. But some people really have to blame themselves. If you don't turn off Wifi, Bluetooth and GPS when they are not needed it's no miracle that the battery is empty in no time. If you constantly check Facebook, Twitter and the like you have to accept that battery life will be significantly shorter.
For me the worst things are Bluetooth headsets. Not only is it annoying to have one more device that has to be charged but it also constantly drains the battery of the phone. Ok those wireless headsets are comfortable but you pay for it by faster battery drain.

hi guys, cool down.
the different opinions about the battery issue are resulting from the different way of using the phone along with the life style.
Some may need a bckp bat. Some can make sure they are always close to a power source ( if people spend a substantial part of the day in cars f.e.) Some even need an additional external power pack, as they are not close to power outlets all day.
That all makes sense to me but doesn't make me switching off all the nice features of that great phone. It is not an a piece for exhibition in a shopping window, it is for my personal use for business and/or leisure activities. It even connects me via video when I am far away from home, it connects me to the social networks and it let me professionally do my work and up or download all info I need from my corporation. I can log in via VPN to my workplace and edit documents by collaborating with colleagues through the cloud. It shows me the way through the GPS, if I need.
It entertains me in many different way if I want, It helps me to find a good restaurant.
I do not longer use a notebook computer or a tablet.
My Notebook computer could work hardly 2 hours with the same usage like my SGN.
So, I accept that this racing machine does need after some laps a pit stop for filling up the power.
Just love that tool, just love it

altae said:
My expectations are pretty much met when it comes to battery life of the Galaxy Note. It lasts a whole working day. That's all I need. And for exceptional situations when I don't have access to a socket I have got a spare battery.
It's clear that the Note drains the battery really fast if it's in use. Just look at the screen . I also agree that it's annoying if the battery is empty after only 1/2 working day. But some people really have to blame themselves. If you don't turn off Wifi, Bluetooth and GPS when they are not needed it's no miracle that the battery is empty in no time. If you constantly check Facebook, Twitter and the like you have to accept that battery life will be significantly shorter.
For me the worst things are Bluetooth headsets. Not only is it annoying to have one more device that has to be charged but it also constantly drains the battery of the phone. Ok those wireless headsets are comfortable but you pay for it by faster battery drain.
Click to expand...
Click to collapse
These are the kinds of responses I was hoping people people would post rather than more whining about battery life. there are plenty of those threads already.
I was hoping for a POSITIVE thread people could read to calm their perceived issues with battery life. BTW I don't use BT head sets for Music. Yes another thing to deal with charging where you cannot simpy replace a battery. I prefer the far better quality wired earbuds.