Develop Bugs

Battery Life atrocious

Fully charged my LTE Nexus while it was on and then fully charged while it was off. Restarted the phone, haven't done anything with it in 30 mins and it's already down 4% to 96%. What's the deal?!?!?

Someone said in another thread... if you look at your Android System usage in the battery meter, its way too high... sounds like a bug - apparently a custom kernel has fixed this, but I havent rooted yet to test it.

Syn Ack said:
Fully charged my LTE Nexus while it was on and then fully charged while it was off. Restarted the phone, haven't done anything with it in 30 mins and it's already down 4% to 96%. What's the deal?!?!?
Click to expand...
Click to collapse
Check here :
http://forum.xda-developers.com/showthread.php?t=1387243
Sent from my Galaxy Nexus using xda premium

Although I prefer the GN, laptopmag.com found that the Rezound and RAZR have clear advantages when it comes to web surfing time on 4G. GSM GN wasn't too impressive either.
"On the LAPTOP Battery Test (web surfing over 4G on 40-percent brightness), the Galaxy Nexus lasted just 3 hours and 40 minutes. That's a full 3 hours less than the smartphone average (6:38), and about 1:20 less than the unlocked Galaxy Nexus on T-Mobile's network. By comparison, the HTC Rezound lasted 5:03 and the Droid RAZR lasted 4:48. Verizon Nexus owners may want to turn off 4G when they don't really need it or find other ways to conserve juice."
http://www.laptopmag.com/review/smartphones/samsung-galaxy-nexus-verizon-wireless.aspx

After just a couple days mine is doing just fine. I'm at 18 hours right now with 23% left. You have to condition the battery always.
Mine did the same thing as they always do. I only got 4 hours first full charge. After 2 more full cycles it's great!

Storm T said:
After just a couple days mine is doing just fine. I'm at 18 hours right now with 23% left. You have to condition the battery always.
Mine did the same thing as they always do. I only got 4 hours first full charge. After 2 more full cycles it's great!
Click to expand...
Click to collapse
I forget this every time I get a new phone!! It's odd considering I load roms very, very frequently on whatever phone I have at the time and I know I have to wait a couple of battery cycles for battery life to get acceptable with any new rom, but I can't seem to remember it with a new phone!
I'm going to chill and wait and see.

Also, let it die completely and then charge it up 100000% (leave it charging overnight if you can). This is a good way to "train" the battery.

Geezer Squid said:
I forget this every time I get a new phone!! It's odd considering I load roms very, very frequently on whatever phone I have at the time and I know I have to wait a couple of battery cycles for battery life to get acceptable with any new rom, but I can't seem to remember it with a new phone!
I'm going to chill and wait and see.
Click to expand...
Click to collapse
Oh yeah, that will work for you. Mine is up to 20 hours now and 14% left.

20 hours of standby show me screen time 3 hours of screen time it's really bad

Im at 39% with around 2:55 screen on... I am on wifi right now though
Sent from my Galaxy Nexus using XDA App

For me that's bad 3 hours damm

z06mike said:
Also, let it die completely and then charge it up 100000% (leave it charging overnight if you can). This is a good way to "train" the battery.
Click to expand...
Click to collapse
Do NOT do this whatever you do. You should never completely drain a Li-Ion battery except when calibrating it after flashing a rom. Draining li-ion batteries hurts its battery life.

x.Orville.x said:
For me that's bad 3 hours damm
Click to expand...
Click to collapse
How much u get?
Sent from my Galaxy Nexus using XDA App

edgeicator said:
Do NOT do this whatever you do. You should never completely drain a Li-Ion battery except when calibrating it after flashing a rom. Draining li-ion batteries hurts its battery life.
Click to expand...
Click to collapse
Ok, so should he do it or not? You say not to unless you're calibrating.
Well, that's what the other poster is talking about. "training" = calibrating.
It doesn't harm a thing letting them drain all the way to the point of the phone shutting down. I've been doing this for all my phones, new roms, etc. I always end up with excellent battery life.

Storm T said:
It doesn't harm a thing letting them drain all the way to the point of the phone shutting down. I've been doing this for all my phones, new roms, etc. I always end up with excellent battery life.
Click to expand...
Click to collapse
Sorry, but you are wrong.
Deep discharges do "harm" a LiIon battery physically (there is damage done to the membranes in the battery at a molecular level).
You will get about ~500 full (deep) discharges from your battery, but you will get more than double of that if you only discharge to 50% and more if you discharge even less. So the best thing is to charge your LiIon cell as often as possible, with the exception that it's also not healthy for the cell to be at full charge voltage (4.20 V) for a prolonged time either.

Yikes. You people with good battery life are lucky haha. I'm on my 6th charge and I still get around an hour and forty minutes of battery life. I'm at like 50% after an hour or so... and that's with LTE off too...
Sent from my Galaxy Nexus using Tapatalk

This thread is redundant, please continue the conversation in one of the older battery life threads.
http://forum.xda-developers.com/showthread.php?t=1386201

Is this normal battery life for the first day of having the nexus?

I just got my nexus today and was wondering if this was good battery life for the first days use and when it will start getting better?
Sent from my Galaxy Nexus using xda premium

This is the screenshot.
Sent from my Galaxy Nexus using xda premium

Just about. I usually get 7hrs.
Sent from my Galaxy Nexus using XDA App

Thats a drastic drop! Id say about normal as well. Did you have a lot of apps that were re downloading from the time you first activated it. After a few days to a week when your done looking at your phone every 5 secs you'll start to see battery improvement haha.

Tonight will be my 3rd time charging it. WIll it get a lot better tomorrow?

ProTip: Put the phone down every once in a while and enjoy life.

That's normal if ur 4g on
Sent from my Galaxy Nexus using XDA App

It can take 4-5 charge cycles for the battery to really get worked in.
Also, check out the juice defender plus app. Doubled my battery life.
Sent from my Galaxy Nexus using XDA App

Lithium Ion cells do not get better in any way after a few charges.
In fact the capacity goes down a wee tiny little bit with each and every charge, so your first charge was the "best" one.
Stop playing around with the thing for 5 hours non stop and you will get decent runtime.

Best thing to do with a new device is to charge it up fully as soon as you can. Then run it down until you get the low battery warning. Then charge it back up.
Battery life will likely be pretty poor for the first week or so, then it will normalize.

Deep discharging (to 0%) is about the worst thing you can do to a LiIon battery, because it "hurts" it much more than several shallow discharges.
Also, like I said before, battery capacity won't in any way rise or "normalize" over the first week.
Battery life is poor the first days because you use your shiny new device all the time (i.e. more than later). It's like that for all of us.

My battery life sucked the first few days, It got better though. It really only seems to suck it down if it is hunting for a signal constantly.
Sent from my Galaxy Nexus using XDA App

If you are using your phone a laptop replacement and are surfing the web constantly, expect it to die like a laptop.
Sent from my Galaxy Nexus Revolution

You also need to try this manual battery calibration:
http://myhtcdesire.com/tutorials/how-to-improve-your-battery-life-calibration-tutorial
After I did this, saw the battery reading 99% and 98% more often rather than straight to 96% after charged.
Originally, it was suggested by HTC tech support. I did that once every six months or so ... And my battery level is now improved. Screenshots will follow in the next post.

Not bad?
Sync is off btw. And this includes using Maps 2%.
At least with my usage pattern, I am more or less satisfied.
I wish Google fixes the high Android OS Keep awake time!
Sent from my Galaxy Nexus using xda premium

cvbcbcmv said:
You need to remember the only thing relating to battery life is not just the battery, it's software as well, hence calibration. After about a week or so your phone gets a "feel" for your battery and gets more battery stats, so it's more accurate with it's readings. That is a proven fact, you need to think about all things.
Click to expand...
Click to collapse
It is quite easy to gauge a Lithium Ion battery. 4.20 V = full. 3.60 V = empty. Your phone can read the battery precise to 0.001 V. The curve isn't linear, but it's well known what voltage relates to the exact capacity left in the battery.
There's really no room to "feel" anything there, just simple math.

Smokeey said:
ProTip: Put the phone down every once in a while and enjoy life.
Click to expand...
Click to collapse
+1
I consistently get 15-18 hours of use out of mine with the extended battery.
But to the OP, if your screen is taking up 60% of your battery, it's always on, your battery is gonna die, it happens. Your battery doesn't get "better" with time. It seems that way because you aren't glued to the device 24/7.

Mine was god awful when I first got it but after a week or so it got much, much better.
I have the GSM version though.

60% screen time gawt damn! Did you talk to anyone that day?

falconeight said:
60% screen time gawt damn! Did you talk to anyone that day?
Click to expand...
Click to collapse
Google need to run classes on how to read the battery consumption pages. 61% screen means that the screen used 61% of the total battery used, not that the screen was on 61% of the time.
Sent from my Galaxy Nexus using Tapatalk

[Q] Battery Calibration

Hey I've read on other forums about these battery calibration apps and whatnot, just want to know if anyone has used them and know if they really do work? The wife and I both have the Dinc2 and i loaded andybonestock on both of our phones.. i use my phone like crazy and she barely uses hers. i put drellis's 21 on and UV 50 and within 15 min off the charger i'm down at most to 98 battery and she's already down to 90. her battery drains rediculously faster than mine and they're both the same exact rom's and kernel specs. Will these app's actually work or is there a real/better way to get hers working better?

Use battery calibration from the market and follow the instructions to a T. Her battery could also be defective. Try the calibration first though.

that's what i'm trying to do. I have it charging right now, at 84% then im going to run it.. just wanted to know if there was any proof it worked or any other option

I left my inc2 get charge to 100% and then use the battery calibration,i notice that my battery goes down from 100% to 97% in just 5second,the battery life is good after goes to 97%,but im not sure why goes down to 97% that fast.

android-incredible said:
I left my inc2 get charge to 100% and then use the battery calibration,i notice that my battery goes down from 100% to 97% in just 5second,the battery life is good after goes to 97%,but im not sure why goes down to 97% that fast.
Click to expand...
Click to collapse
Just a heads up, that is normal, your battery will never stay at 100% it doesn't charge to 100% unless you bump charge it (and that is bad for your actual battery). Having it drop anywhere from 97% to 92% is common, after that you will notice a substantial slowdown in battery drain unless you are heavily using the phone.
I added a picture of my battery life as an example of the length I am getting from the ICS Rom I'm currently using. I have my phone oc'd to 1.4ghz and uv -25 across the board. This screenshot was taken after a day full of phone calls ranging between 3 minutes and 20 minutes, moderate browser usage, moderate facebook usage and lots of texting.

Ya I knew it wouldn't stay at 100 at all but like how mine would be at 97 after 15min and hers at 90.. it just didn't add up.. she rarely used her phone and only had about 6 hours of charge, while my battery with excessive use had enough battery to last me about 16 hours. I reset battery stats and then bump charged her phone. Now its fine
Sent from my Mikrunny'd Vivo_w

faehsemc said:
Ya I knew it wouldn't stay at 100 at all but like how mine would be at 97 after 15min and hers at 90.. it just didn't add up.. she rarely used her phone and only had about 6 hours of charge, while my battery with excessive use had enough battery to last me about 16 hours. I reset battery stats and then bump charged her phone. Now its fine
Sent from my Mikrunny'd Vivo_w
Click to expand...
Click to collapse
glad you figured it out.
careful on bump charging, it decreases the life of the battery itself everytime you do it.

I personally don't use the apps. I've had the best luck with charging to 100%, power off and charge till green light, unplug and do one more time, boot to recovery, wipe battery, power up and unplug. That's just me though.
Sent from my ADR6350 using xda premium

CondemnedSoul said:
I personally don't use the apps. I've had the best luck with charging to 100%, power off and charge till green light, unplug and do one more time, boot to recovery, wipe battery, power up and unplug. That's just me though.
Sent from my ADR6350 using xda premium
Click to expand...
Click to collapse
That's what I did to remove battery stats.. read up on the app and realized its the same thing as doing it in recovery
Sent from my Mikrunny'd Vivo_w

CondemnedSoul said:
I personally don't use the apps. I've had the best luck with charging to 100%, power off and charge till green light, unplug and do one more time, boot to recovery, wipe battery, power up and unplug. That's just me though.
Sent from my ADR6350 using xda premium
Click to expand...
Click to collapse
Charging to 100% and then powering off and charging again IS bump charging, that is bad for your battery itself, it takes away life on the actual battery everytime you do it. I said this above. You may be getting an extra half hour to an hour out of your batterys life but you are decreasing the amount of times it can actually hold a charge each time you do that, therefore ruining your battery for a tiny bit of extra battery life per charge.

dankblaze said:
Charging to 100% and then powering off and charging again IS bump charging, that is bad for your battery itself, it takes away life on the actual battery everytime you do it. I said this above. You may be getting an extra half hour to an hour out of your batterys life but you are decreasing the amount of times it can actually hold a charge each time you do that, therefore ruining your battery for a tiny bit of extra battery life per charge.
Click to expand...
Click to collapse
I'm quite aware of what it IS. I also didn't say I do it every charge. I also know that some say its not good. I also know some say smoking can kill you. I also know I've done it on other devices with no problems. And I also didn't say for anyone to do it. I only said what I do and what has worked for me.
Sent from my ADR6350 using xda premium

Face Palm!
Sent from my Mikrunny'd Vivo_w

CondemnedSoul said:
I'm quite aware of what it IS. I also didn't say I do it every charge. I also know that some say its not good. I also know some say smoking can kill you. I also know I've done it on other devices with no problems. And I also didn't say for anyone to do it. I only said what I do and what has worked for me.
Sent from my ADR6350 using xda premium
Click to expand...
Click to collapse
The smoking analogy doesn't really relate, smoking can kill you but doesn't always, bump charging for a fact decreased the longevity of your battery hence shortens the time before it does not hold a charge anymore and you have to buy a new one. I made a factual comment, I did not need a condesending response.

dankblaze said:
The smoking analogy doesn't really relate, smoking can kill you but doesn't always, bump charging for a fact decreased the longevity of your battery hence shortens the time before it does not hold a charge anymore and you have to buy a new one. I made a factual comment, I did not need a condesending response.
Click to expand...
Click to collapse
*condescending
And if it's a fact, can you provide a link to a scientific study backing up your claims? If not, please don't claim that it's fact based on forum posts by other users and your own anecdotal experiences.
Thanks!

First 10% battery drain

I'm noticing on gummy and other roms I try that the first 10-12% drops fast then slows down to normal. No matter what kernel I try this seems to be the case. Anyone have any idea or maybe you could school me? Thanks community
I've wiped stats and tried to open and close camera, super aggravating!
Sent from my Galaxy Nexus using xda premium

When your phone is on the charger, it will charge to 100%. After it hits 100%, it will remove itself from the charger and run on battery. This will go down to a certain percentage (maybe 95%, maybe 90%), at which point the phone will reattach itself to the charger and charge back up to 100%. The drop you are seeing is when you take the phone off the charger while it is in the midst of one of these cycles. I would assume it still shows 100% battery but drops down to what it's really at.

Thanks but my battery doesn't get consistent until around 90 and lower so I'm sure your rite but why does charge to 100%
On my nexus s it stoped at 95-96%?
Sent from my Galaxy Nexus using xda premium

I have the same "issue" but I've just learned to live with it...

this makes perfect sense! i always wondered why it did that! thanks

oilfighter said:
I have the same "issue" but I've just learned to live with it...
Click to expand...
Click to collapse
Obviously we all learn to live with it but isn't it nice to know that its an issue and not your phone alone, that's why I ask to see if my fellow community members are experiencing the same problem? I think it has something to do with the fast charge
Sent from my Galaxy Nexus using xda premium

joshnichols189 said:
When your phone is on the charger, it will charge to 100%. After it hits 100%, it will remove itself from the charger and run on battery. This will go down to a certain percentage (maybe 95%, maybe 90%), at which point the phone will reattach itself to the charger and charge back up to 100%. The drop you are seeing is when you take the phone off the charger while it is in the midst of one of these cycles. I would assume it still shows 100% battery but drops down to what it's really at.
Click to expand...
Click to collapse
One way around it is to unplug it for a second and then plug it back in to top it off.

Or charge it while it is off
Sent from my Galaxy Nexus using xda premium

mike216 said:
Obviously we all learn to live with it but isn't it nice to know that its an issue and not your phone alone, that's why I ask to see if my fellow community members are experiencing the same problem? I think it has something to do with the fast charge
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
It's really not an issue, it's just how it works. It gets to 100% and instead of charging more and frying itself, it stops charging. When you take it off the charger at 100%, it's not really at 100%, it's somewhere in between 90 and 100. The reason it says 100 is that if you let it charge all night and it said 93% in the morning you'd have already called to Samsung to complain, as would have everyone else.

The HTC thunderbolt did this as well. To protect the battery, once it reaches 100%, it stops charging. Then once it hit 95% or somewhere in the 90s again I believe, it kicked back on. You have to bump charge. Though I believe once I started installing custom roms, the issue seemed to disappear. So maybe its in the code or something.
Sent from my Galaxy Nexus using XDA App

Every phone does this.
xHausx said:
One way around it is to unplug it for a second and then plug it back in to top it off.
Click to expand...
Click to collapse
DON'T DO IT!!!!
Seriously, bump charging will destroy your battery health.

Every phone does it. It is to protect the battery's life.
Batteries suffer when they are 100% charged and when they are really low.
That's why when you get a brand new battery is it charged about 50% because it extends the battery's life while in the shelf.

When I disconnect in the mornings it's always 97 or 98%. who knows when it stops charging in the middle of the night. but from 98% to 75% it is really quick. maybe because during that time I'm on the train listening to music and browsing the internet at the same time.
With iphone 4, I always disconnected at 100% in the mornings and after the train ride the battery was around 88%.

fubaya said:
It's really not an issue, it's just how it works. It gets to 100% and instead of charging more and frying itself, it stops charging. When you take it off the charger at 100%, it's not really at 100%, it's somewhere in between 90 and 100. The reason it says 100 is that if you let it charge all night and it said 93% in the morning you'd have already called to Samsung to complain, as would have everyone else.
Click to expand...
Click to collapse
No I didn't calk Samsung and did you hear me complain? I simply asked a question and if you dont like what you read then ignore it and move on. Wake up on the wrong side of the bed. What's up with people hear?
Sent from my Galaxy Nexus using xda premium

mike216 said:
No I didn't calk Samsung and did you hear me complain? I simply asked a question and if you dont like what you read then ignore it and move on. Wake up on the wrong side of the bed. What's up with people hear?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
He was just saying that if you put your phone on for a full night of charging and woke up to see it was at 93%, you'd probably assume something was wrong and call the manufacturer. Chill out, he's not insulting or mocking you...

I didn't leave it on all night but he was a little offensive by basically calling me a complainer by saying did I call samsung already
I just wanted to known if my problem was rom or kernel or maybe even hardware but coming to find out that my GN is just like that was a bit of relief. I've owned a galaxy s,nexus s but this was the first time I've seen a Google samsung battery charge behave like this. No biggie was just curious
Sent from my Galaxy Nexus using xda premium

KWKSLVR said:
Every phone does this.
DON'T DO IT!!!!
Seriously, bump charging will destroy your battery health.
Click to expand...
Click to collapse
In the long run maybe a little, for how long most people keep their phones it won't matter though. This was actually something HTC recommended we do for the Evo 4G cause it was the exact same way.
I actually did have one of my batteries discharge too much to where it wouldn't come back, but all I had to do was take it in to Sprint and they gave me a new one for free.

mike216 said:
I didn't leave it on all night but he was a little offensive by basically calling me a complainer by saying did I call samsung already
Click to expand...
Click to collapse
I don't know how you got that from what I wrote. I was just saying that if you woke up and the battery said 95% after charging all night you'd think something was wrong with the phone, as would everyone else. The reason it says 100% is that the phone manufacturers don't want to explain that it's not a problem to a million callers a day.

xHausx said:
..
I actually did have one of my batteries discharge too much to where it wouldn't come back, but all I had to do was take it in to Sprint and they gave me a new one for free.
Click to expand...
Click to collapse
The same thing happened to my brother's G2.
Then I remembered, It can be brought back to life either with high voltage or high current. I plugged in to my Touchpad's charger (which is 1.3 amps I think), and the miracle happened. It returned from the dead.

KWKSLVR said:
Seriously, bump charging will destroy your battery health.
Click to expand...
Click to collapse
sstang2006 said:
Batteries suffer when they are 100% charged...
Click to expand...
Click to collapse
Not true.
The best thing for a Lithium Ion battery is to keep constantly charging it as much as possible. These are not the old nickle batteries of ~10 years ago. The internal circuitry inside your phone's charging system is what keeps the lithium cell in it's "happy range".
However, once a cell is outside of it's "happy range" one of two things will happen:
1) Thermal run-away; this is when an overcharged cell begins to generate it's own heat by consuming Lithium, creating more heat, consuming even more Lithium, creating even more heat, etc... When you hear of people's laptop batteries catching on fire in airplanes or where ever, it's usually because of thermal run-away.
2) Cell depletion; if a cell is discharged too low it looses it's ability to retain a charge. It's not a "Hmmm... my batter doesn't seem to hold a charge as long anymore" like the old nickle batteries, but it won't hold ANYTHING at this point.
In closing, there is nothing wrong with "bump charging" your Lithium battery. The charging circuitry has been HEAVILY scrutinized and tested for safety measures and will never overcharge your cell (assuming the HW is opreating correctly).

Battery life Replenished!

I was on here trying to find a way to reset my battery's memory...and I found it! Its so easy. So during the day, drain your battery to 20%, and plug it in all night. When you wake up, take off the back, and take out the battery for 3-4 minutes. Then, put the battery in the phone and turn it on. As it's turning on, plug in the charger. Leave the charger in until the phone says "charged" or has the battery icon showing full. Unplug your charger, and say Hi to a factory battery.
AT&T Samsung Galaxy S III

2% in 17 minutes....this is phenomenal... at least for me.
AT&T Samsung Galaxy S III

It is just an overcharged battery...
Sent from my SGH-T999V using xda app-developers app

What do you mean?
AT&T Samsung Galaxy S III

my understanding is that the battery is never really charged to 100% (even if you see 100% charged in the software).
it is a way to prevent overcharging the battery (because on the long run, it is decreasing the battery life and performance)
So, what you are doing is that you found a way for overcharging the battery and the result is that the battery life for the first 100 to 98 will be very good, however it will go back to normal after this step.
Correct me If I'm wrong, but I'm pretty sure that I'm right

Nah, its completely better...
AT&T Samsung Galaxy S III

Lol....you'll have to show more proof than that, even if youre phone confirms what you said.
Matrix is right, I think this is in your head. Placebo effect as its known.
show us screen shots of batterry useage for a week with this technique, then a week with out.
Then others will have to try it out.
Hey if your smart enough (since again your NOT doing anything physically, trust me ) you could write a a little script and make it an app?
Also its been said the battery gauge is really kind of a pasifier for us.
Physicaly there is no way you are changing the state of the battery by just touching the contacts real fast.
UNLESS your batter contacts are totally fried/or oxidized and somehow the friction has cleaned them???
If any thing, you are resetting the battery statistics/calibration and that ( confirmed by google, and a few a manufacturers)
does nothing.
One thing about batteries; the harder you work them the shorter they live, this is why Samsung,htc even apple said the batteries don't fully charge 100%, because if they did the batteries wouldnt last half as long.
But hey keep working on it maybe you got something there! :good:
and just for yucks

Your phone never charges all the way to prevent over charging and help keep your battery healthy for a longer period of time. Some kernels allow you to change this hidden setting from 98% to 100%.
All you are doing is circumventing the system and potentially harming your battery. And unless you keep doing this for every charge cycle it will return to normal.
You may be experiencing a placebo effect because your battery stats have changed based on the over charge. The battery stats data is used to guage your battery life.. This is updated for every cycle and will eventually return to normal on its own.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Sent from my SAMSUNG-SGH-I747 using xda premium

J2DAe said:
Good job man. Don't listen to these haters. All they do is complain and shoot everyone down when they have a good idea. So **** em
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
We're not "complaining" we're simply correcting the statement. Its for the users own good. Don't be drama.
Sent from my SGH-I747M using xda app-developers app