Battery Life - The Good The Bad and The Ugly

[sikclown]

what is the difference between awake time and up time??

Awake Time is the amount of time you have actually used the device. Up time is the amount of time since you have rebooted essentially

 

[twospirits]

Moving to Support section

 

[Reddawg]

I'm unrooted and fairly stock. I updated last night and my phone has been on the USB cable connected to the netbook ever since. I went into a meeting and unplugged the phone at 10 AM at 100%. At 10:26 I was down to 87%. It was just sitting on the table. It is set to CDMA, PRL's updated, Talk is off, Background Sync is off, Wifi was off, 4G was on but I'm in a 4G area. GPS was off, 'Enable always on mobile data' was off, and no task killers were running.

It stabilized at 87% but it was a precipitous drop! Hope that gets fixed one of these days.....

 

[steelersmb]

It's gotta be a hardware issue.

 

[IXIShogunR1]

it seems to be just the way the evo charges

 

[Never!?]

I left mine unplugged all night and it went down 6%. Right after the download I went into the apps setting and forced closed nearly everything that wasnt using or never used. Try that

 

[IXIShogunR1]

thats kind of what i do..... charge before bed.... take off charger.....
when i wake up its down 3-5%
charge for 30 mins and its at 100% to start the day

 

[NeoteriX]

I'm unrooted and fairly stock. I updated last night and my phone has been on the USB cable connected to the netbook ever since. I went into a meeting and unplugged the phone at 10 AM at 100%. At 10:26 I was down to 87%. It was just sitting on the table. It is set to CDMA, PRL's updated, Talk is off, Background Sync is off, Wifi was off, 4G was on but I'm in a 4G area. GPS was off, 'Enable always on mobile data' was off, and no task killers were running.

It stabilized at 87% but it was a precipitous drop! Hope that gets fixed one of these days.....

It's not a "problem" but rather an intentional decision to manage the longevity of the battery over its lifetime. It's called float charging and though you may not have realized it, many products charge their lithium ion batteries this way.

 

[RiverOfIce]

Not to hammer the issue or anything, but...

If you are not using a task killer lets see what is running in the background?
1.)News
2.)gmail
3.)internet
4.)facebook
5.)market
6.)sprint zone
7.) voice mail
8.)messages
9.)clock
10.)google search
11.)footprints
12.)amazon mp3
13.)stocks
14.)qik
15.)sprint navigation
16.)sprint football
17.)voice dialer
18.)nascar
19.)fm radio.
20.) sprint tv
That is 20 programs that you can not delete, modify, or change in any way that is always running in the background. Yes, I know how android uses memory. But what happens when the program like facebook, nascar, sprint tv actually do not go dominant, but continuously stay away eating at radio time to "update themselves"?

All of those programs you can not turn of or remove. They are automatically on you phone and updating. They are not dormant but actively working in the background, continuously.

Those twenty programs just hammer on battery life when you live your phone unattended.

But you can do an experiment. Force close those programs using the program manager. You will need to do it repeatedly, they will continue to reload if you do not. See how your battery life is then.

 

[EarlyMon]

If you're having actual lifetime issues, then follow this advice:

http://androidforums.com/htc-evo-4g/137941-official-hows-your-battery-life-after-froyo-2.html#post1276272

In the order suggested. If all else persists, do a factory reset followed by the Network app cdma->gsm->CDMA auto (PRL) + update PRL step.

 

[rsarno]

Im on a dInc, but many who have tried the leaked 2.2 have reported less battery life.

Just wondering if that has been improved with the official release that yall received

Thanks for info

 

[VSpike915]

I was never one to complain about battery life on the EVO. I averaged 12hrs a day without holding back (not going crazy either) and since Froyo, my battery is downright abysmal. 6hrs today with just the 3G radio on killed it. I always thought the CDMA-GSM trick worked, and now I'm at a loss. Any suggestions, or if this is a widespread issue? I thought Froyo was supposed to better battery, not decrease it.

 

[EarlyMon]

http://androidforums.com/support-troubleshooting-evo-4g/140705-new-bug-i-found-2-2-its-really-aggravating.html

 

[Mongoos150]

My battery life has been FANTASTIC after updating to 2.2! I've never rooted, used the official OTA, no task killers ever. As it was all meant to be done.

I unplugged my EVO last night around 1am, woke up at 8am to 93% battery. I've been texting, using Pandora, installing apps, running mobile backup and light YouTube usage and am sitting pretty at 52% at 5:30pm. I would be at 10% by now pre-froyo.

Thanks Google!

 

[IXIShogunR1]

I was never one to complain about battery life on the EVO. I averaged 12hrs a day without holding back (not going crazy either) and since Froyo, my battery is downright abysmal. 6hrs today with just the 3G radio on killed it. I always thought the CDMA-GSM trick worked, and now I'm at a loss. Any suggestions, or if this is a widespread issue? I thought Froyo was supposed to better battery, not decrease it.

is your phone sleeping?

 

[Mikey P]

I agree, my battery life has improved dramatically. I unplugged this morning at 6:30 and am still sitting at 52%. I use my Evo a pretty good bit too, it doesn't just sit there. Before the update I was charging just about every night, which was perfectly fine with me. Now it is really great.

 

[scmobileman]

I'm going to give it a few days before I say a lot but last night I lost 51% in five and half hours while sleeping. The phone had been rebooted and all processes (within reason) had been stopped so that's horrible.

 

[chadk881]

Anyone having battery life issues after the phone has been on for a while go under settings>About Phone>Battery under this check your up time vs awake time.. your up time should be a far higher amount of time compared to awake time.... If it is exactly the same or close then you may have an app that is incompatible with froyo that is causing the system to not sleep therefore battery goes away rather quickly... if that isn't issue then idk but since update have seen alot of post where people had this issue deleted a bad app and bam battery issue solved.



edit: @basso barely though

 

[basso4735]

Definitely sounds like it isnt sleeping. Is your uptime and awake time almost identical?

edit: chad beat me..

 

[scmobileman]

Anyone having battery life issues after the phone has been on for a while go under settings>About Phone>Battery under this check your up time vs awake time.. your up time should be a far higher amount of time compared to awake time.... If it is exactly the same or close then you may have an app that is incompatible with froyo that is causing the system to not sleep therefore battery goes away rather quickly... if that isn't issue then idk but since update have seen alot of post where people had this issue deleted a bad app and bam battery issue solved.



edit: @basso barely though

That's the first thing I checked and while mine is awake more than it should be it was not awake nearly enough to drain the battery the way it did.

 

[Venkman]

I was having great battery life after a hard reset as well as a great uptime to awake time ratio. However, this afternoon after I restarted my phone and all of a sudden my uptime = awake time and battery life began to plummet significantly faster than it had been for the past day.

I haven't changed anything since the restart. I uninstalled all apps I added and restarted the phone again, but the uptime still = awake time. Checked what's running and nothing out of the ordinary is popping up besides what's stock. I even have background data turned off.

I have also noticed the lag between portrait and landscape. It takes 2-4 seconds for it to switch now.

*** Trying another hard reset to see if that remedies the problem ***

*** Hard reset fixed the uptime to awake time ratio; adding apps/widgets one by one to see which one screws with it***

 

[BenChase7]

I think Froyo has made improvements for the EVO. Battery is better--I took my phone off the charger at 430AM and its now 1000pm and I have 25% left. Today was a moderate (to say the least) useage day. My "WiFi's" get more "bars," too!
Flash rocks! And the EVO is smoother and faster all around.

 

[Carl6]

*** Hard reset fixed the uptime to awake time ratio; adding apps/widgets one by one to see which one screws with it***

Please post what you find. My uptime = awake time also (since installing 2.2 this morning), and battery is being eaten alive. Would like to avoid hard reset if possible, but will do so if no other option. If you find an app/widget that is causing the problem, and post it, others can benefit potentially. Thanks.

 

[BetterMost]

I unplugged this handset at midnight with 100% charge at 5am when I woke up I found this. This has never happened before.

 

[tjwoo]

I'm guessing your phone's having a pretty hard time finding a signal. You've got 1 bar in all your pics. Perhaps it's unnecessarily staying awake and roaming? Certainly would drain a phone's battery.

Time for Evo # 4?
Kidding. Update your prl, profile?