Disappointing battery life. So far

junodragon · Feb 23, 2012

Noob here. I've been following the posts here and I'm experiencing lower than expected battery life too, I think.

Can anyone make any suggestions to increase my battery life? I've installed Juice Defender Beta(balanced), turned screen brightness down(14%), have background data and auto sync on. I had wifi constantly on until I read on here that it sucks up battery life, so I disabled it until I got home. Any help is appreciated! Thanks!

droidal · Feb 23, 2012

junodragon said:
Noob here. I've been following the posts here and I'm experiencing lower than expected battery life too, I think.

Can anyone make any suggestions to increase my battery life? I've installed Juice Defender Beta(balanced), turned screen brightness down(14%), have background data and auto sync on. I had wifi constantly on until I read on here that it sucks up battery life, so I disabled it until I got home. Any help is appreciated! Thanks!

I would let that sucker get as low as you can take it then charge it up to 100%, and only use the wall charger. Charge it with the phone off. The first couple times I charged mine just like that. I also unplugged my phone when it said 100% and plugged it right back in and let it go back to 100% again. Usually took 5 minutes are less. I felt these step conditioned my battery. I'm getting 20 hours battery with 3 1/2 hours screen on time.

If it don't get better walk in to ATT and trade that battery in.

---------- Post added at 09:45 PM ---------- Previous post was at 09:44 PM ----------

I'm not using juice defender or anything and keep my screen at 100%.

buckwheat.phd · Feb 23, 2012

Like all other new phones/batts, my experience went like this:

1st day - awful. Killed it in about 6 hours
Today (6 days later) - batt life has apparently tripled. Been running it since 6am, it's now 10:30pm at 44%. I've been texting, talking, *****ing, playing, surfing and what ever else

So not only have I calmed down on the poor thing since the 1st day, according to the chemical engineers these batts become much more efficient after x# of cycles. Like 2x as efficient after only ~ 1/2 dozen cycles.

So give it some time and watch. And there's always that goofy 5" thick 5A battery w/extended back you can buy - which I HAD to do with my Infuse. The Infuse *never* got any better. I could live with the extra size on the Infuse, but on this one no way.

I just keep it in my pocket, no problem. No case. New backs are only $18 on Ebay if it gets scratched up. I'm always asked what it is, I just tell them it's a micro-tablet. They usually sneak off and buy one but don't tell anyone, or worse let anyone see them holding it up to their face. Then they call in sick the next day to play with it lol.

This thing is a class act.

cmjkxa · Feb 23, 2012

Err0xx said:
This is my battery life. 21 hours unplugged, and made it to just over 5 hours screen on time when my battery hit 1%. Totally stock, auto-brightness, streamed music over Bluetooth, browsed the web, watched videos, and used wifi. Also in a LTE area (Atlanta)

Sent from my SAMSUNG-SGH-I717 using xda premium

how the heck are you getting 5 hours of screen on time?! I can barely make 3.5

Err0xx · Feb 23, 2012

cmjkxa said:
how the heck are you getting 5 hours of screen on time?! I can barely make 3.5

I take some extra precautions such as every app that has the option, I select the darkest theme I can find. I have super dark backgrounds, etc. Thats huge for power savings on AMOLED. Also i keep a CLOSE eye on wakelocks using BetterBatteryStats. Other than that I just use my phone. Batteries "burn in" at different speeds depending on slight differences in chemical make-up, so give it some time. Right now I'm at 4h 33m screen-on and 20h unplugged and I'm still at 22%, so my battery life tonight is better than my previous screenshot. Engadget reported 8.5 hours in their video rundown test at 60% brightness in an LTE area on the ATT Note, so my battery life seems about on par with theirs.

Sent from my SAMSUNG-SGH-I717 using xda premium

droidal · Feb 23, 2012

cmjkxa said:
how the heck are you getting 5 hours of screen on time?! I can barely make 3.5

I only get 3.5 on screen time also. But I run 100% brightness at all times and use Live Wallpaper. And that's over 20 hour span.

cmjkxa · Feb 23, 2012

Err0xx said:
I take some extra precautions such as every app that has the option, I select the darkest theme I can find. I have super dark backgrounds, etc. Thats huge for power savings on AMOLED. Also i keep a CLOSE eye on wakelocks using BetterBatteryStats. Other than that I just use my phone. Batteries "burn in" at different speeds depending on slight differences in chemical make-up, so give it some time. Right now I'm at 4h 33m screen-on and 20h unplugged and I'm still at 22%, so my battery life tonight is better than my previous screenshot. Engadget reported 8.5 hours in their video rundown test at 60% brightness in an LTE area on the ATT Note, so my battery life seems about on par with theirs.

Sent from my SAMSUNG-SGH-I717 using xda premium

I downloaded betterbatterystats and I noticed that "alarm manager" is on for partial wakelocks for hours. Any idea what that might be?

Err0xx · Feb 23, 2012

cmjkxa said:
I downloaded betterbatterystats and I noticed that "alarm manager" is on for partial wakelocks for hours. Any idea what that might be?

That partial wakelock can murder a battery. Samsung phones have incredible deep sleep efficiency. Take that way and you heavily hit battery life.

Charge your phone to 100% and power it off then back on. Go a few hours with it and check BetterBatteryStats using the "since unplugged" option. See if the wakelock is still active. Generally restarts kill wakelocks like that, as its just a bugger in the software that glitched. If its still acting as a wakelock after the restart, thus preventing deep sleep, we'll try to precisely identify what's doing it so you can force close the guilty app should the wakelock repeat in the future. Sounds like maybe something with the native clocks app. Try what I said with a charge and restart first, though. That's fixed my wakelocks.

Sent from my SAMSUNG-SGH-I717 using xda premium

cmjkxa · Feb 23, 2012

Err0xx said:
That partial wakelock can murder a battery. Samsung phones have incredible deep sleep efficiency. Take that way and you heavily hit battery life.

Charge your phone to 100% and power it off then back on. Go a few hours with it and check BetterBatteryStats using the "since unplugged" option. See if the wakelock is still active. Generally restarts kill wakelocks like that, as its just a bugger in the software that glitched. If its still acting as a wakelock after the restart, thus preventing deep sleep, we'll try to precisely identify what's doing it so you can force close the guilty app should the wakelock repeat in the future. Sounds like maybe something with the native clocks app. Try what I said with a charge and restart first, though. That's fixed my wakelocks.

Sent from my SAMSUNG-SGH-I717 using xda premium

Thank you so much for your quick response! I'll do exactly that and give my findings.

Zabalba · Feb 23, 2012

I don't know about you guys but my battery life has been stellar.

Sent from my GNote.

CrazyTomato76 · Feb 23, 2012

Zabalba said:
I don't know about you guys but my battery life has been stellar.

Sent from my GNote.

Did you root your phone?

Sent from my SAMSUNG-SGH-I717 using xda premium

cmjkxa · Feb 23, 2012

hey errox!, i PM'd you.

Bl00dRunzC0ld · Feb 23, 2012

My battery life is fine for me. Got the phone on sunday and my battery life has been like this every day.

Sent from my SAMSUNG-SGH-I717 using xda premium

Nicarsu · Feb 23, 2012

Yesterday I factory reset my phone and formatted usb storage and my cf card, just in case it was some filesystem corruption causing my fast battery drain. I wasn't able to diagnose a particular cause for my issue, but I suspect it was something sitting on partial wakelocks all the time.

This time I'm being much more judicious adding software and auditing their effects before continuing. I've now got it working dramatically better than it has so far, and I feel confident that I have proper diagnostic tools to discover future problems.

I'm running the stock rom and unrooted so far. All I've removed are easily removable preloaded apps that I know I'm not going to use.

Zabalba · Feb 24, 2012

CrazyTomato76 said:
Did you root your phone?

Sent from my SAMSUNG-SGH-I717 using xda premium

Yes, but I'm not running a customer kernel or anything.

ElCamino · Feb 24, 2012

I am getting pretty good battery life on the Gnote.

Sent from my SAMSUNG-SGH-I717 using xda premium

odobo · Feb 24, 2012

I would highly recommend a reboot for the guys that their note cant last for a day.... I root the phone the day before and yesterday my battery only lasted 8+ hours before it got below 10%. I checked and found that the phone didnt enter much deep sleep for the whole 8 hours even when its idle, it was sitting in the 384MHz for nothing.

This morning after I fully charged my phone I reboot right away. The phone lasted for 13:35 hr (screen on time about 50% and battery watch show display spent 53% of battery) and entered deep sleep a lot more than yesterday when it is idle....

its still doesnt last as long as my iphone4 did... but I will take it for now and see if I will need a spare battery later

CradleRob · Feb 24, 2012

odobo said:
I would highly recommend a reboot for the guys that their note cant last for a day.... I root the phone the day before and yesterday my battery only lasted 8+ hours before it got below 10%. I checked and found that the phone didnt enter much deep sleep for the whole 8 hours even when its idle, it was sitting in the 384MHz for nothing.

This morning after I fully charged my phone I reboot right away. The phone lasted for 13:35 hr (screen on time about 50% and battery watch show display spent 53% of battery) and entered deep sleep a lot more than yesterday when it is idle....

its still doesnt last as long as my iphone4 did... but I will take it for now and see if I will need a spare battery later

I've booted and rebooted. Wtf??

Sent from my SAMSUNG-SGH-I717 using Tapatalk

Maroon Mushroom · Feb 24, 2012

MM's battery tips!

-Juice Defender. Free app on the market. Although I highly recommend the paid version, it is amazing. It controls your data / wifi / bluetooth and only turns them on when you need them.
-Screen off profile. You can do this in SetCPU. Under the profiles tab, create a new profile to only be active when the screen is off. set your maximum clock at 192mhz. Because you don't need it clocked up if it's just in your pocket or something.
-Brightness. As you guys are probably seeing from your battery usage, the screen is taking up the battery. Just lower the brightness. Sure it won't be a complete flashlight anymore, but you'll get used to it and it will help your battery.

Right now it's not the battery life that bothers me, it's how slow it charges. Hopefully we'll get a kernel that supports rapid charging.

rgarjr · Feb 24, 2012

Get an iPad charger, thing will charge pretty quick.

Sent from my GT-I9220 using xda premium

Disappointing battery life. So far

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