yashsingh1/xdaforums huggingface dataset:
[G2 and Desire Z General] pcgeek86:
Hmmmm maybe I'll follow other's recommendations and let the battery die completely. I know that I've let it get down around 6%, but not completely die.

I'd hope it wasn't defective hardware :(
[G2 and Desire Z General] moSess:
Every one should know already that charging from the pc gives a lot less juice than the wall outlet. It will also mess your battery up real good because of that. The charger has a rating , the pc provides less mA than that rating in turn making it charge slower and damaging the power cell to boot.

But, alas, I digress as google is your friend:)
[G2 and Desire Z General] larryccf:
i've said it in another thread but i'll repeat it here - my battery life was decent, but like an earlier poster said, it's a matter of "training" the OS or the calibration in the OS.

up to a few days ago, after charging to 100% or what the phone thought was 100%, i'd take it off the charger at night, put it into airplane mode till next morning, and with moderate to medium heavy useage, come home at 6:00PM with 25-35% charge

the other night i kept it on the charger long after it showed 100%, about 4.5 hours after, and the next day i noticed the charge was a whole lot slower in coming down from 100% - i came home with 80 or 85% charge showing

yesterday the same, and today, moderate useage, started using the phone at 7:00AM, at 4:00PM it was still showing 90% - useage was light to moderate, maybe a half dozen calls, some browsing, checked email 2-3 times, and downloaded an app, ran benchmark a few times, as well as running speedtest.net a few times (I was testing HSPA+ coverage areas around town)

it's also possible the battery now, at the 2 week mark, is starting to settle into it's full capacity, but picking up approx 50% additional charge remaining at the end of the day, after "over charging" after it showed 100% has me believing the OS's calculations need a true full charge to reference 100% accurately

the folks over on the Evo 4G forum have a complicated version of the above they refer to as the "Evo charging trick" but basically it's charging the battery a few times well after it shows 100%

FWIW

and btw, i've always only charged my battery off the laptop's usb port - only cause i tether to the laptop and browse every night
[G2 and Desire Z General] davidbessler:
The answer will be in how long it takes peoples phones to say 100% charged. Will some of the folks who are getting 20+ hrs please let their phones die down to less than 5% And then plug them in with the phone on and time how long it takes to charge to 100%

I would also love to see some actual documentation of the OS "learning" your battery's highs and lows.

Thanks to whomever participates in this experiment.
[G2 and Desire Z General] Mftek1:
Wow.. My battery only lasts 6 hours with moderate use... How can I improve this? I hear people get about 12-20 hours

Sent from my T-Mobile G2
[G2 and Desire Z General] moSess:
Simply The Best

My Wing was this good, as was my Touch Pro. My TouchPro2 was nice with a 6.1 ROM. In all those instances I was very cautious. The 6.1 roms ran the best for battery. All the windows mobile standard phones I owned were fine as well.

Android is a diiferent beast.

The battery on the G2 is better than the Nexus and Vibrant hands down. Heavier use, better peace of mind!:D
[G2 and Desire Z General] xdviper:
I go about the whole day without charging but some days it gets silly and has to charge even with moderate usage.

I've only had the phone for 5 days now and I still can't come to a conclusion but its deff better than my iPhone with heavy usage. Today at work with moderate usage of data and about a hundred texts it lasted the whole day from 10am to 9pm with about 35% remaining. Hopefully like another member said if the battery picks up its capacity over time and gets a 50% increase then it should be good.

Once we're able to root our phones we can set the cpu to a lower clock ans squezee out more juice from the battery.
[G2 and Desire Z General] larryccf:
last night i used Paul OBrien's Visionary temp root to disable all the bloatware on the phone - i was curious what effect it would have on the phone's battery life.

Phone came off the charger last night at midnight, put the phone into airplane mode till this morning. Useage today consisted of 68 minutes of phone call time, some browsing for maybe 20 minutes, checked email twice, ran a few speedtest.net tests, ran some quad benchmark tests and played with phone some - at 6:00 PM battery was showing 94% remaining. I also leave GPS on as well as background data & auto-sync.

tomorrow i'm going to use it, keep track of my useage and run it till it gets down to 0 or 1% and see what kind of hour life i get out of it

try what i suggested a few posts before yours
[G2 and Desire Z General] rwbarnes67:
I took my phone off the charger at 8am. Used wi-fi at home, bluetooth on the way to & from work, wi-fi on again at home WITH GPS on all day. Email, Twitter, Facebook, texting and calls off and on all day. Downloaded lots of apps from the Market, played a lot of Angry Birds.

It's now 11:14pm and I'm at 24% charge left.

I did condition my battery (3 times running to 0% and recharging over the last few days).
[G2 and Desire Z General] davidbessler:
For the folks who leave auto-sync off, do you just intermittently turn it on when you want to check your email?
[G2 and Desire Z General] ellessidil:
With VISIONary temp root installed, bloatware removed, Juicedefender and SetCPU setup, I am able to get around 48 hrs before needing to recharge with light (SMS/Email/FB) use. Medium use results in about 24 solid hours before I hit 25% battery left.
[G2 and Desire Z General] texasaggie1:
Its normal. Most modern batteries have a fast charge capability which does zero to about 75 % super quick (like an hour). The final 25 % make take a couple more hours.
[G2 and Desire Z General] SeReaction:
I get around a good day's worth of moderate use plus Angry Birds. The main differential was from my N1 experiences where I would put the data connection mode as GSM AUTO PRL.
[G2 and Desire Z General] Jairus:
I've had mine for a week, and I get about 4 hours of heavy use if I'm lucky. Yesterday it was charged overnight, dead by 3PM, charged again for a few hours, and then dead by midnight. It's making me crazy. That's without Wifi/GPS, gaming, or heavy syncing. Just a lot of texting and email.
[G2 and Desire Z General] sinistersai4d4d:
I get 7 to 8 hours of HEAVY use... but the other day I used 2g all day, but I was still using the phone A LOT for gaming and such, and I was amazed at how much better the batter life was... I came home from working 10 hours and had 30% left. I had no idea 3g/4g was such a drain. I'm going to do that more often..

Anybody find a safe 1800 or 1900mhz same size battery yet that fits without chopping and shaving?
[G2 and Desire Z General] rumitg2:
Mine is actauly pretty good. I've been using my phone with heavy usage. 50% brightness on all day. Send a bunch of texts around 20_40. Atleast 2 hours of pandora and atleast 1 hour of morts audiobook player. Usualy more because I use it as my default media player. Also I use newsroom and update it around 12 times manualy. I unplug my phone at 6am and plug it back in at around 11pm. Doing this I usualy have around 25-15% battery left. I have visionary installed and have disabled photobucket, amazonmp3. And twitter. For me this is excelent battery life. Back on my nexus one the same settings would leave me dead at around 6pm

EDIT: I have nto conditiond my battery since i got the phone. also i had an issue where the battery was draining incredibly quickly with no apparent reason. factory reset solved the battery and all is good again
[G2 and Desire Z General] Kainous:
3 hours and less on heavy use with lowest brightness.

I find the claims on amazing battery life a bit exaggerated. Waiting on an extended battery.
[G2 and Desire Z General] sinistersai4d4d:
3 hours? I keep my screen pretty dim too, but dude, even my G1 was better than that. I know a lot of these people are full of **** (same with the people that swear their hinge is a solid as chuck norris on viagra), but I'm a phone addict and I get roughly 7 hours out of my G2. I'm not watching movies but I'm talking about browsing, constant twitter/facebook and plenty of WOrdFued and Angry Birds.

The only way I can get more than 7 is with 3g turned off and using edge. Three hours sounds like YOU'RE exaggerating lol. More than likely you got a bad battery, because even before cycling my battery I was getting decent time out of it.

That being said, I am also waiting on a nice extended battery.
[G2 and Desire Z General] meltedmoops999:
My G2's battery is absolutely the best battery ive seen on any android device out yet. I heard it was one of the longer lasting batteries to this day along with the MT4G. Lets hope the gingerbread update cures the bad android battery life. Keep our fingers crossed.
[G2 and Desire Z General] wesmagyar:
i am thinking there is a bad batch of batteries. becuase mine will only charge to 98-99% and within 10 minutes of being on even in standby it drops to like 65-70% and im lucky to get 4 hours out of it. i have it set to 2G networks only and wifi is off. screen is set to auto brightness.

in the battery stats menu

40% android system

17% cell standby

14% display

10% phone idle

and then a few other apps like twitter and facebook. i dont know what the deal is im going back into the store where i got my phone to see if i can get a replacement battery becuase i think mine is toast. my girlfriend got a G2 at the same time as me and she plays all kinds of games on it and has wifi on and hspa enabled and she gets like 13-14 hours out of hers. in a 3 hour period when we where together she was going to town on her phone with angry birds and what not and my phone was mostly idle her battery was at 92% and mine was at 52%... wtf...
[G2 and Desire Z General] jinpaul.yang:
when i initially got my g2, i was able to run about 20-24 hours on a single charge

i downloaded that battery booster app on the market and now im able to run 24-28 hours in a single charge, not much of huge increase but noticeable.

I would use your phone until it is completely drained and charge your phone while its kept off for 6 hours and repeat that 3 times.
[G2 and Desire Z General] Praxis1452:
Are you using Cyanomod RC1. There are reports that the battery drops like a brick with that version. 3 hours is what I currently get with RC1 and OC'd to 1.497 ghz.
[G2 and Desire Z General] convolution:
36 hours from 100% to 12%.

Lowest brightness.

Wifi always turned off cept for when I need it.

Moderate gaming on my GBA emulator (pokemon emerald and advance wars =D)

bout 4 hours of calling. 50 txts...

I must say it's pretty good.
[G2 and Desire Z General] elracing21:
What roms are you using? What kernel? Oc clock speed? Profile settings on set cpu?

That's amazing battery life. I want to mimic it! LoL

HTC Vision S-OFF CM6.1 Rc3 Oc'd to 1.5ghz on Pershoots Kernel
[G2 and Desire Z General] Jairus:
The battery life, she is not good. This is an old screenshot of light use (maybe a dozen texts/emails?).

Drove from Ottawa to Montreal last night on a full charge. The drive is less than three hours, the battery was dead by the time I got there. Had it on Google Navigation for about half that time.
[G2 and Desire Z General] vro25:
Uninstall Kik

My battery life was pretty crappy until I uninstalled Kik Messenger.

If you check Spare Parts and your "Running" time under Battery History is >10% (with no use - i.e. leave it alone for an hour or two) then you have a program eating your battery.

I bit the bullet and did a clean install of a Modaco G2 stock ROM and with 3 GMail accounts & Google Talk running I was getting less than 8% running time. When I installed Kik it went up to 20%!

Bye-bye Kik :-(

FWIW, WhatsApp seems to be much better wrt battery drain. My phone is hovering around 10%.
[G2 and Desire Z General] clintz:
I get at least 24 hours, stock G2, full brightness, a little angry birds, some texting here and there, some emailing. not real heavy usage.
[G2 and Desire Z General] elracing21:
whats this battery stat app?
[G2 and Desire Z General] Jairus:
SystemPanel.
[G2 and Desire Z General] Praxis1452:
I'm pretty sure that GPS navigation kills battery really badly. You may want to underclock your phone when you use it. If you set it to stock, I'd expect some better results.
[G2 and Desire Z General] Jairus:
I have it underclocked. Honestly the only reason I joined these forums and rooted my phone at all was to try to get better battery life, but it just isn't happening. I need a phone that lasts me through a work day of occasional texting or twitter or whatever, and this isn't it. Any recommendations for a replacement?
[G2 and Desire Z General] sinistersai4d4d:
You can't get through a day of twitter and texting? idk what to tell you... most people are getting 7 hours heavy use. Have you looked into the high capacity batteries? Have you considered just turning off 3g/4g? 2G will DEFINITELY get you through 9 hours... I see a 50% increase when I use 2g only.

http://www.htcexpress.com/batteries...-battery-sprint-verizon-incredible-droid.html I have these...

Or if you're REALLY serious about lasting 3 days on one charge...

http://www.mugen-power-batteries.co...c-desire-z-t-mobile-g2-with-battery-door.html
[G2 and Desire Z General] Jairus:
Unfortunately, I can't get a 2G connection. I'll try wiping my phone and seeing if it gets any better before I sell it.
[G2 and Desire Z General] vro25:
Jairus,

You need to isolate the problem. My phone is still at 88% battery life after 9hrs (admittedly it's not doing much) but that's what you should be seeing too. If you're not then one (or more) of your apps is killing your battery. I am not even underclocking or using setcpu.

Reset your phone to factory fresh to get rid of all your apps. Try that for a day to see how long it lasts.
[G2 and Desire Z General] CB620:
I'm still going off of a single charge it is now 6:51pm with 23% left and I was fully charged at 3:27am.
[G2 and Desire Z General] Jairus:
Yeah, I'm resetting it now. According to the phone, most of my battery life (>70%) is being eaten by the display, but I'm assuming that's not accurate.
[G2 and Desire Z General] poondek:
What's the millivolts (mV) like when your Z is at 100%?

I'd just like to conduct a quick survey with everyone.

(found this elsewhere on xda) Press *#*#4636#*#* on the phone keypad without dialling. This triggers the "Testing" application. While your Z is fully charge, select Battery Information and see the battery voltage indicated.

I'm doing this to understand how far behind I am in training android. My phone can last 6 hours on heavy usage, but at least 14 hours on standby (totally not used) with 3G enabled/autosync disabled. If everyone else's mV value is a lot higher, then obviously I know something is wrong with mine.

So for reference, what's the millivolts (mV) like on your Z?

Mine is 4210mV at 100%, 3341mV upon hitting 1%.

Thanks. :)
[G2 and Desire Z General] elracing21:
this is the same as going to about phone and checking battery info.

Anyway I'm at 100% with 4183v

HTC Vision S-OFF CM6.1 Stable Oc'd to 1.5ghz on Pershoots Kernel :)
[G2 and Desire Z General] Lucas155:
Thanks for the tip. I'd love to learn more about this training. I also found the "Turn on Radio" button. Will this actually do anything for me?
[G2 and Desire Z General] quierotacobell:
I've noticed that for me personally, using wifi saves battery A LOT, and it's most likely because tmo network sucks and always looking for a signal. Without wifi I could barely go 10 hours with moderate use, now I'm sitting at 80% after moderate use after 11 hours, and when I'm not on wifi I use 2g only. No OC, no UV kernel, just stock 800mhz. So that might help some of you guys who are in an area with bad signal, try using wifi.
[G2 and Desire Z General] mullepol:
I'm at 4221mV at 100%, dispite playing music for 20 minutes.

My battery lasts me roughly 1.5 days, landing at roughly 40% between waking up and going to bed.
[G2 and Desire Z General] poondek:
Hi guys, I've tried performing one of the suggested conditioning technique* and I'm surprised to report that my Z seems to have improved in its battery life.

So far, today alone, I've clocked at least 6hours with the device on, 3G enabled (autosync off) with Facebook updates streaming in frequently via notifications. I had more than an hour with Angry Birds (trying to run-down the battery again) and it still has 35% remaining.

Previous experience is that it'd hit 5% after 6hours of surfing/gaming while out shopping. Since then I've disabled live wallpaper, manually lowered screen brightness and installed JuiceDefender/CPU Tuner.

So I guess this is a significant improvement to its battery life with this combination of factors. Any caveats? :D

* run the battery dead flat, remove battery, long-press power switch then recharge with device off, rinse, repeat
[G2 and Desire Z General] poondek:
remaining at 100% while unplugged and having played 20minutes of music? that's fantastic!

and sadly... I've never seen my battery voltage reach that value yet... >_>"
[G2 and Desire Z General] poondek:
Just sharing what I've found :)

"Turn on Radio" button? Where did you find that?
[G2 and Desire Z General] jcostantino:
I figured I would throw in my $0.02 here... this is my 3rd day with my G2 and I have taken the first two days to run it totally dead until it automatically shuts down. I received it Monday and rooted it the same night so I don't consider that a full day's use. I did not test it out at all unrooted so I don't know how battery life was. I am using setcpu with a 1.5 ghz overclock and 200 mhz minimum clock. Sync services, Facebook, and Weatherbug run in the background.

My office has terrible 3g reception that only penetrates about 5-10 feet in through the windows at 1 or two bars. Further in (40 feet) where I sit the phone is usually on 1 or 2 Edge bars. Back another 20-30 feet the phone is lucky to be on network.

Home is great and I usually have HSDPA all the time except when texting in the bathroom when I have a hand covering the antenna and then it's strong EDGE. I do live close to where the 3G coverage in my area falls off. Another few miles west and it's EDGE only (and then another couple miles and you're in swmp).

With that said, my G1 was usually on yellow battery when I got home or shortly after with almost no use - couple phone calls and texts a day, can't do anything data. The G2 came home close to that and I was a little worried that I had another poor performer. I let it die while I was setting up apps and messing with it.

Yesterday it went strong ALL DAY and I was really using the phone trying to get it to go dead. Finally it shut down around midnight from significant internet use, phone calls, installing a bunch of apps, etc.. I didn't really log my use but it was more than normal on my G1.

So I'm VERY pleased with the performance and battery life. I may buy an extended battery one day for occasions like being at a theme park and unable to charge at all until late at night. I can't see carrying a spare battery in my pocket jangling around with my keys or loose next to the phone itself in my other pocket.
[G2 and Desire Z General] blunted09:
coming from a desire and nexus one i find the desire z last much longer. However, i have no clue how people claim to have their battery last them longer than a day with

3G enabled. i get through the day (8am-8pm) but thats it. Moderate use as well.

Overall though, very pleased with the battery life. Love my Z :)
[G2 and Desire Z General] hansalvato:
You be the judge http://twitpic.com/3d69mz
[G2 and Desire Z General] mdayjr:
Had to post this. I'm astounded at this. Believe it or not let the pics tell the story. Latest Enomther's The Official Rom and Pershoot's latest kernel all running with SetCPU.
[G2 and Desire Z General] catachresistant:
http://img593.imageshack.us/img593/8884/screenshot2m.png

34% remaining, and it wasn't fully charged when unplugged.

Yeah, I guess I'm pretty happy with the battery.
[G2 and Desire Z General] poondek:
hmm... my display is currently taking up 69% of the battery use so far. i'm on stock HTC rom, using non-live wallpaper. any suggestions?
[G2 and Desire Z General] mastajest:
Lowering the brightness might help.

Still, one of the biggest battery drains is the display. If you notice on the pics of the people who's battery lasted over a day, the display is only using ~4% of the battery. That's because they've had it off for most of that time.

My set up on my G2 is CM 6.1.1; CM kernel OC'd at Max:1209Mhz Min:768Mhz

Sleep profile at Max:768 Min:245; also have a max temp profile (42.5C) just to play it safe.

It'll last more than a day too as long as I don't use it much.
[G2 and Desire Z General] JPHCCFC:
Its a bug with stock HTC rom. I'm went to cyanogen and that resolved it
[G2 and Desire Z General] wesleyjw:
battery life has gotten better

Hey everyone, first post.

I was having a heck of a time with battery life issues until recently.

I rooted my phone, and upgraded the Radio Rom to Vision_RADIO_12.28e.60.140f_26.04.02.17, but it wasn't much of an improvement.

Then I decided to try a new ROM on my phone, and I installed HTC Vision (G2/Z) MoDaCo Custom ROM with SENSE.... again, not much of an improvement.

Seeing that my phone was rooted, I decided to overclock my Desire Z; after doing so, my phone was faster, but obviously did not have better battery life. I did some reading, and installed an application called 'CPU tuner' which allows you to use different triggers and profiles; and within those profiles, use different speeds (MHz) dependent upon what your battery life at that specific time might be.

This didn't help too much however... UNTIL... I installed 'SetCPU' which allowed me to set the min and max values for my CPU speed. Prior to installing SetCPU, my min value was only 768MHz, but after installing it, I was able to reset the value to a min speed of 245 MHz. By doing this, and also changing my profile settings within CPU Tuner, I was able to increase my battery life significantly. I think this made a drastic improvement, because while my phone was idle (in my pocket, etc) it was using much less CPU (245MHz), and hence less battery. Then when I was actually using my phone, it was using more battery, but I was also getting much quicker speeds (I set my max overclock speed to be 1306 MHz)

I would say I'm somewhat of a heavy user of my phone... to give you an idea of what kind of battery life I was getting prior to the above...

I was using 15% brightness, using Touchdown for my Exchange push email , twitter syncing every hour, facebook syncing every 4 hours, Gmail syncing, HTC Sense syncing every hour, news and weather syncing every 4 hours, heavy WhatsApp usage, regular browsing, and regular usage of checking Hockey scores on a regular basis using my Score Mobile App. My battery life would last about 5-6 hours and it'd be dead.

Now, with all the same settings above, I get through about 13-14 hours with about 10% remaining.

I hope this post helps some of you guys. Thanks.
[G2 and Desire Z General] dontbes:
Battery life is great for me, I don't worry about using the browser for an hour and then seeing my battery was at 60% like on my vibrant. Constant 3-4 bars of 3G and H(Mostly H)

I send around 1000+ texts a day and I'm still at 20% by 12am.
[G2 and Desire Z General] dhkr123:
If you look carefully, I bet that (even if you configured it to never sleep), the wifi is DISCONNECTING a short time after the screen turns off.

http://code.google.com/p/cyanogenmod/issues/detail?id=2722
[G2 and Desire Z General] Gigamaster89:
Completely stock with wifi calling app running 100% of the time, I got 36 hours with light usage.
[G2 and Desire Z General] Stellios:
Assuming you are awake 24 hours a day then that means your sending on average 3 texts every 5 minutes! Do you per chance have any form of RSI :p