Develop Bugs

[Q] Battery life decreases after a few days

okay so im running the mikofroyo 4.3 rom it starts off with 26 hours of battery life at a full charge... after about 3 days it decreases and at a full charge i only get 7 hours what can i do to fix this? this, has also happened with other roms as well

You probably use,it differently at other days..
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no the most i use it is on the weekends where i work we are not allowed to have cell phones so it just sits in my pocket or in the car all day

Do you use chats or something like that ? Like aim and stuff
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Get an app called battery booster. Let the phone's battery get under 20% click full cycle charge. See if that helps. Also how often do you let the phone just die out? That could help. Oh yeah and don't mess with the phone on full cycle charge.

Yeah try different things
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Poor battery life on beastmod ii 4.2?

I don't know but for some reason battery life has been horrible since I switched to beastmod yesterday it lasted only 6 hours and 45 minutes when the phone was on 3g. When I'm on wifi, I get around 19 hours. No offense to the developer (it is a great ROM) just curious as people on this forum have reported
excellent battery performance on this ROM.
Sent from my SGH-T989 using XDA App

Battery life for me was better then stock. With regular (periodic) use I would get around 23 hours, with heavy use around 12 hours. Could be the install or wipe the battery stats.

Let the battery do like 3 or 4 cycles..
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My battery life is doing great. Give it time.
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I'd recommend an app that helped me extend my battery life. "Traffic Monitor" by RadioOpt GmbH. I was able to identify apps that were eating up data and battery.

Fantastic battery life on 4.2

Battery life is very good compared to the previous releases. I ran for forty minutes with Bluetooth turned on while listening to tune in radio and using endomondo app. Google now turned on. I lost fifteen percent compared to losing 35% with similar usage. Very satisfied.
What do you think?
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Why would you make a thread linking to a post you made in another thread?
Bit unnecessary. To answer the question it's too early for me to thoroughly test battery life.

Bump
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thats not fantastic at all...

I would wait for at least 2 complete battery cycles to make a thread like this.

ssvijay said:
I would wait for at least 2 complete battery cycles to make a thread like this.
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Ditto. My phone ran like a champ on a freshly flashed ROM. Then my phone realized it was born as a Verizon-Nexus mutt and had a psychological breakdown to the point of 1.75 hours of on-screen time the day after.
Twas a sad day

I'm reading my work email over the exchange service account. After upgrde to 4.2 the exchange service process eats my whole battery so I can't tell about any improvement.

True
Sent from my Galaxy Nexus using xda premium

When it comes to battery life (in general, though especially true with this newest release), it's crazy how many divergent opinions you get. Some people claim to get amazing battery life (exactly what quantifies for amazing?) and some people claim the battery life is crap. This is just to remind you that unless you have a good way of measuring battery life, your measurements can be plus/minus hour(s). Someone who just leaves their phone on a black screen with no wi-fi and cell may get 10 hours of screen-on time. Someone who is watching videos with cell/wi-fi might only get 2 hours of screen-on time.
In the future, I can make two recommendations:
Always report a complete cycle (from 100% to close to 0%). This is because the battery does not discharge at a constant rate.
Always report screen on time
Average for GNexus in previous builds was 2-4 hours. I've no idea about the plus/minus, but they tend not to be under 2 and over 4 with moderate usage. I think an average of 3-3.5 hours is what most people are happy to report.

And that is really sad because my old atrix used to get over 8 hours on Wi-Fi with over twelve hours of standby time. I wish they would make this phone but with a smaller screen size. The technology used on this phone is not battery efficient at all.
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modgadgets said:
True
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Click to expand...
Click to collapse
This tells us nothing....u don't show ur screen on time and uve been charging off and on..

Battery life in sleep mode is worse for me. I am losing 3% an hour with the screen off, I used to lose only 3% total overnight with the screen off not per hour. I tested this over the last 4 hours only waking the tablet up long enough to check the battery level and it has gone down by 3% each time. Nothing has changed with any apps or setting since I upgraded from 4.1.2 to 4.2. I got concerned when I noticed this morning that my battery was over 15% less then when I went to sleep. Anyone else notice this?

This is very good battery by my standards.
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Soldier 2.0 said:
This is very good battery by my standards.
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Click to collapse
Not great by mine....and I have an LTE GNex

This is my battery life stats after using 4.2 for 2 days... Is it good?
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The screen on time is good but not much of an improvement. Also it appears you had WiFi off for most of the time.
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Last shot before my battery dies...
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re
50% left 23h 11m on baterry. wifi and location on all the time and 10% wasted on need for speed most wanted also. brightnes at 80% aprox. im very pleased with the baterry really maybe becouse the phone is relatively brand new and the battery still very fresh allways charging with care after discharge not on and off the charger all the time

yeah using the 4.2 factory image with trinity a4 and getting great battery life

[Q] kernel for best battery?

Hello all I was wondering if anyone had any suggestions on which kernel helps save the most battery. I am a high school student and by the time I get out at 2:15 my batter is at like 30 or 40 percent (even know I don't get that good of service and shouldn't be using my phone In school anyway lol) but im using the infamous 3.9.2 rom... Any suggestions would be great!
Sent from my SGH-T999 using xda premium

Well to be honest no kernel is gong to be the "best" is more like you need to be conscious what you have on. You have to give more info like what percentage you have brightness on, how often you have data on or gps. Also syncing takes battery away so having those on will take big chunks. Really battery shouldn't be that bad because technically I would guess your not using it as much in school.
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daxecutioner24 said:
Well to be honest no kernel is gong to be the "best" is more like you need to be conscious what you have on. You have to give more info like what percentage you have brightness on, how often you have data on or gps. Also syncing takes battery away so having those on will take big chunks. Really battery shouldn't be that bad because technically I would guess your not using it as much in school.
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Click to expand...
Click to collapse
I normally have the brightness the lowest it can go. I never have gps on.. I use juice defender to turn off my data when I'm in rooms that get no 4G and im assuming synching is off when my data is off to.
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What's your typical usage - the screen on time ?
If it's average use and nothing is wrong, you might want to consider buying either an extra battery or an external battery to charge with. Or an extended battery. Battery battery battery.

Pennycake said:
What's your typical usage - the screen on time ?
If it's average use and nothing is wrong, you might want to consider buying either an extra battery or an external battery to charge with. Or an extended battery. Battery battery battery.
Click to expand...
Click to collapse
I will let you know at the end of my school day
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use one of the several methods to find out what is using the battery...i use betterbatterystats then i find out whats waking my cpu and go from there...
after that i use titanium to freeze the problem...I do this for several phones and normally can get way better battery life from them

Just make sure you don't freeze something important that's going to cause problems. If it's a app you can always uninstall..I'd your screen time is about 4 to to 6 hours expect like 9 to 10 hours max of battery life. Extended battery will make the phone look bulkier and having a case is a issue. If anything get an external battery possibly with charger too.
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Try Lean Kernel its the best for battery life.

[Q] Batter draining too fast..

Just got a replacement Epic from Sprint about a day ago. Looks new, probably refurbished. They replaced my old one because it started having some problems along with fast battery drain and inconsistent battery level readings on the device.
So I have my new device along with a new battery from sprint, and I thought all would be well but my new epic and new batter is still draining about 10% every 20 minutes with light use (internet browsing over wifi w/ lowest screen brightness setting). Also, when the phone gets to about 30 or so percent battery life it starts lagging and when I pull the battery or reboot it, the batter meter will read real low (like under 10%) once it powers back up.
I am rooted, I installed The Peoples Rom all according to the instructions from qbking77 on youtube just as I had with my last phone without problem.
I have calibrated the battery twice, and wiped the battery stats in recovery.
I was having these same problems with my last epic which is why I had it replaced. Now I have a new one and new battery and the same problems. How can I fix it?

Also not using GPS, Bluetooth, etc
Just wifi and web

j2gifted said:
Just got a replacement Epic from Sprint about a day ago. Looks new, probably refurbished. They replaced my old one because it started having some problems along with fast battery drain and inconsistent battery level readings on the device.
So I have my new device along with a new battery from sprint, and I thought all would be well but my new epic and new batter is still draining about 10% every 20 minutes with light use (internet browsing over wifi w/ lowest screen brightness setting). Also, when the phone gets to about 30 or so percent battery life it starts lagging and when I pull the battery or reboot it, the batter meter will read real low (like under 10%) once it powers back up.
I am rooted, I installed The Peoples Rom all according to the instructions from qbking77 on youtube just as I had with my last phone without problem.
I have calibrated the battery twice, and wiped the battery stats in recovery.
I was having these same problems with my last epic which is why I had it replaced. Now I have a new one and new battery and the same problems. How can I fix it?
Click to expand...
Click to collapse
Sounds like an application you are installing is the culprit. Search XDA for "better battery stats" and download/install that application. It will tell you what wakelock is your problem.
Wiping battery stats has been stated to do nothing to benefit the phone/battery/user. It's a placebo. (http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer)
j2gifted said:
Also not using GPS, Bluetooth, etc
Just wifi and web
Click to expand...
Click to collapse
GPS and Bluetooth being enabled is fine. They remain inactive until a process calls that action; such as opening Facebook or Maps.

I don't have many applications installed. I installed the battery app just now, so now what do I do with it? How do I use this information?
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j2gifted said:
I don't have many applications installed. I installed the battery app just now, so now what do I do with it? How do I use this information?
Sent from my SPH-D700 using xda app-developers app
Click to expand...
Click to collapse
Play with the settings in the middle and last drop down menus to pick a duration of time and then toggle the top menu to see what's keeping your phone awake. usually "partial wakelocks".
Also, if you have a virgin install, then you can very well have a battery on its' last leg. We have an old phone, so it is very possible you have an old battery. Yes, even from Sprint.
If you don't see any outliers in BetterBatteryStats, then I'd suggest just spending the $12 or $20 on an Epic 4G Touch battery. That one is a 1800mAh battery, compared to our phone's 1500mAh and fits in our phone.

The only thing that seems to stand out is No or unknown connection (something like that) screen (which is always on lowest setting) and wifi (which I'm mostly connected to indoors) the battery that sprint sent me for the replacement is from the GS2 (that 1800mah that u were talking about)
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Here's a screenshot of the battery stats I just took. Its been about 20 minutes since I unplugged that phone, when I unplugged it, it was at 98%... I believe it was at 87% in that pic.
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Toggle the "other" drop down menu and select "partial wakelock".
Also, check your time without signal in: settings > battery > cell standby menu on your phone. Anything greater than 3% will be a battery drain.
Sent from my SPH-D700 using Tapatalk 2

Ok here's screenshots of the things u asked for... all I've done since last post was browse a couple of webpages, and took a long shower lol
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Things seems normal from the screenshots. Could just be an old or bad battery. You could complain to Sprint about it, 50/50 chance on getting a free replacement.
Sent from my Nexus 7 using Tapatalk 2

Ok I'll try that and hope for the best, are u sure there's nothing else i can check? Just to make sure?
Also, even if I get another replacement from Sprint, I may still go to Amazon or ebay... can you recommend any sellers or specific batteries... after market or OEM?
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nikon120 said:
Toggle the "other" drop down menu and select "partial wakelock".
Also, check your time without signal in: settings > battery > cell standby menu on your phone. Anything greater than 3% will be a battery drain.
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
The cell standby percentage is, in fact, greater than 3%
hence battery drain.
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j2gifted said:
Ok I'll try that and hope for the best, are u sure there's nothing else i can check? Just to make sure?
Also, even if I get another replacement from Sprint, I may still go to Amazon or ebay... can you recommend any sellers or specific batteries... after market or OEM?
Sent from my SPH-D700 using xda app-developers app
Click to expand...
Click to collapse
I got mine off Amazon. I made sure I got an official Samsung battery (1800mAh). You shouldn't have any issues locating a few on there.
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Put your phone in airplane mode for 3-5mins, then take it off. Check and see if battery still drains.
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jeffreyjicha said:
The cell standby percentage is, in fact, greater than 3%
hence battery drain.
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Click to expand...
Click to collapse
How can you tell?? What do I do to fix it?
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j2gifted said:
How can you tell?? What do I do to fix it?
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Click to collapse
The screenshot you posted showed a cell standby percentage of 7%. I'm not sure what to do to fix it because it hasn't happened to me before.
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So I pulled out my old battery last night and put it in the phone, and allowed it to charge overnight. This morning I put my phone through its normal use. I've been on my old battery for a little over 30 minutes and have on dropped about 8% in this time. I still feel like that's a lot, but its better than 10% every 20 minutes on the "new" battery they sent. So I'm guessing this would mean it is the battery that sprint sent that's causing the problem?
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