Develop Bugs

[Q] Not sure if I have found a battery drain bug or what

Something I've discovered recently, and I am not sure I can explain it properly, but here goes...
I am running SRF 1.1.1, I don't believe this is the cause of the problem, but probably something that should be stated.
So running SRF1.1.1, I usually get wonderful battery life. I typically use an external charger and swap out batteries when they get to around 10-15%. This has worked well for me.. For the past few days I got lazy, and just plugged my phone in and left it on my desk to charge, no problem. When the battery is fully charged and I unplug it from the charger, I noticed it was rapidly draining.... I am aware that often when charging via the phone the battery immediately drops to 96% when removed from the charger. So this is normal, but I've noticed that after unplugging from the charger I lose about 10% per hour, when normally it may be 1-2% depending on usage.
To remedy this problem, rebooting seems to fix this issue. I have also had success with the airplane mode toogle. I don't see any odd usages showing up in spare parts, but is there any other way I can test this theory?
Thanks!!
Edit: Wanted to add, that this only seems to happen when using the charger cable with the phone. Swapping batteries does not seem to produce this issue. It is only when the phone is removed from the charger.

I haven't calibrated by battery lately and thats exactly what mine does too, I would stick to the external charger because our phones charge excruciatingly slow unless off. Try calibrating by charging to full while on then turn it off and let it charge more and repeat that a couple times then boot into cwm go to advanced and clear batt stats

Is there an advantage to calibrating a battery if it is not being charged in the phone?

This is the TWS bug mixed with no battery calibration.

socos25 said:
Something I've discovered recently, and I am not sure I can explain it properly, but here goes...
I am running SRF 1.1.1, I don't believe this is the cause of the problem, but probably something that should be stated.
So running SRF1.1.1, I usually get wonderful battery life. I typically use an external charger and swap out batteries when they get to around 10-15%. This has worked well for me.. For the past few days I got lazy, and just plugged my phone in and left it on my desk to charge, no problem. When the battery is fully charged and I unplug it from the charger, I noticed it was rapidly draining.... I am aware that often when charging via the phone the battery immediately drops to 96% when removed from the charger. So this is normal, but I've noticed that after unplugging from the charger I lose about 10% per hour, when normally it may be 1-2% depending on usage.
To remedy this problem, rebooting seems to fix this issue. I have also had success with the airplane mode toogle. I don't see any odd usages showing up in spare parts, but is there any other way I can test this theory?
Thanks!!
Edit: Wanted to add, that this only seems to happen when using the charger cable with the phone. Swapping batteries does not seem to produce this issue. It is only when the phone is removed from the charger.
Click to expand...
Click to collapse
similar to what i have been experiencing. i enjoyed great battery life with srf 1.1.0. have a 3500mAh battery that i used to get about 48 hours out of, but now it is averaging around 25-30. i do not have anything but the stock battery to swap with, so i do put it on the charger nightly now. i was planning to recalibrate the battery tonight to see if that cleared things up.
what would be a way to fix the tws bug?

I have noticed this too. It seems to srf seems to not like my extended battery. I am lucky I get a day out of it. I some times will plug it into one of my work computers just to bring the charge up a little and it starts flashing red and discharging this is only on my extended battery not the 2 stock ones I have. I have even tried different kernals to see if that was issue it isn't.
Sent from my lean mean drunken machine useing XDA Premium and a 12 pack of Sam Lager

in looking at battery usage in >settings>about phone>battery use>cell standby i see usually 0-5% tws.
one thing i have noticed, though have not tested is that the screen appears brighter, even at the minimum setting than what i remember from srf 1.1.0

Battery Calibration Issues?

Hi All,
I posted this on MoDaCo initially but it seems either noone was interested or not many people have a Galaxy Nexus on that forum. So, I'm going to paste the post I put on there and see if you guys are having similar issues as its starting to become an annoyance.
Just so people don't start moaning, this ISN'T related to the Battery draining problem I originally posted a week or so back. My battery issues are fixed thanks to the wonderful devs who made Juice Defender.
Anyways, back on topic. I've noticed ever since I've gotten my GNexus that the battery never fully charges to 100% without me unplugging it and plugging it back in again to FORCE it to charge to 100%. I've tried the usual battery calibration trick and I have also tried an app on the market that is supposed to work.
I then tried wiping and putting the stock ROM back on, but to no avail. Wiping batter stats via CWM comes up with the same as well.
My battery is capable of charging to 100% but its only if I unplug it from charging and them plug it back in again.
I've tried charging via USB and via the wall charger both with the same results. My question is, are you guys having these issues? Is there anyway of fixing this that I haven't already tried?

There are a lot of threads about this already, please use the search before posting. This is normal behavior, batteries will never keep charging once they hit 100%, they stop charging and will charge again after they have dropped a few percentages. This is to protect the battery.

I have the same 'issue'. Not that I am too concerned about 1-2% but every morning when I unplug and look at the phone its on 98%-99%. never 100%

This is, in fact, a good thing.
The max voltage you may charge a LiIon cell to is 4.20V. If you charge it slightly less, say to 4.15V (~95%), you will get a lot more charge cycles out of it.
Also, the more time the battery stays at max voltage (or close to it), the faster the battery ages.

kristovaher said:
There are a lot of threads about this already, please use the search before posting. This is normal behavior, batteries will never keep charging once they hit 100%, they stop charging and will charge again after they have dropped a few percentages. This is to protect the battery.
Click to expand...
Click to collapse
search is hard to understand
</sarcasm>

Am I damaging the battery?

so I got Need for speed for my Xperia S (great game by the way, would recommend) the only problem is it is un UTTER battery drain, I'm talking rapid draining even having the screen brightness on low. Do you think the battery is getting damaged by my heavy use in this way? I'm charging it to full, playing it for a good hour and then it needs to be recharged so I plug it in.
cheers

adsada arc said:
so I got Need for speed for my Xperia S (great game by the way, would recommend) the only problem is it is un UTTER battery drain, I'm talking rapid draining even having the screen brightness on low. Do you think the battery is getting damaged by my heavy use in this way? I'm charging it to full, playing it for a good hour and then it needs to be recharged so I plug it in.
cheers
Click to expand...
Click to collapse
No you are not damaging the battery. Hd games drain your battery. Dont worry it happens with every phone. Please post questions in question and answer section.
Sent from my LT26i using xda app-developers app

How about if I play while the phone is charging, does this affect it in any way, like how with a laptop you should take out the battery if its plugged into the wall to extend the battery's life?

adsada arc said:
How about if I play while the phone is charging, does this affect it in any way, like how with a laptop you should take out the battery if its plugged into the wall to extend the battery's life?
Click to expand...
Click to collapse
No it wont affect your battery...I have been doing that for the past 10 months
Sent from my LT26i using xda app-developers app

It's a difficult question. From one perspective it's better to keep the phone plugged in because a Li-ion battery has a finite amount of recharging cycles. The worst thing you can do is to completely discharge your battery, then completely charge it again and so on several times. Which is what you've been doing and these are wasted recharge cycles.
But constantly charging your phone will also make it hotter and that combined with an intensive game will make your phone too hot, which might result in some components overheating and a reduced life expectancy.
So I'd advice to keep your phone plugged in if possible, but don't play for hours.
When you compare to laptops, it's indeed better to remove the battery when you're plugged into the wall (keep in mind that the battery doesn't lose its charge though, there's nothing worse for a Li-ion than being completely empty). But there's no phone you can run without a battery so you can't do that . It's also a question of luck. I never remove my laptop's battery and it still easily lasts 2 hours after having it for 2.5 years and using it a LOT (when plugged in mostly). It was just a cheap laptop with a 6 cells battery. Most of my friends that have a laptop that old or older (and also more expensive) can barely keep it charged for more than 10 minutes now.

No,
nowadays you can't damage your battery in any way as I know.
But it is recommended to charge your phone to 100% and turn all notifications off then let it on sleep mode till your Phone is going off by itself.
This doesn't improve the Battery lifetime or something like that but it is recommeded

thanks for the advice everyone

[Q] How on earth can the device's battery decrease while charging?

Hi everyone!
As you can see on the attached picture the device's battery life was decreasing while charged, i was playing a game with 40% brightness.
Can someone explain ne this, please?
Thank you!

Depends on what game you're playing. Asphalt 8 while charging for me only slowly charges, 1% every 15 minutes or so. If the game is using more resources faster than the battery can charge, it will decrease.
Sent from my Nexus 7 using xda app-developers app

hobuci said:
Hi everyone!
As you can see on the attached picture the device's battery life was decreasing while charged, i was playing a game with 40% brightness.
Can someone explain ne this, please?
Thank you!
Click to expand...
Click to collapse
Not sure if that is totally unreasonable. 40% is significant in addition to gaming with a game that requires significant power seems OK.

I have the problem sometimes of my nexus 7 losing battery while charging sometimes as well, but I never use my stock charger and don't know where my original micro usb cable is. I have found that different Micro USB cables can have a major impact on charge rate. When the Galaxy S3 came out I noticed that with the stock charger and stock cable, I lost battery anytime I used my phone even while charging. My suggestion to you is to install the app current widget and put a widget on your home screen to see the amount of charge your device is receiving while charging. Yes you cannot do this while in a game, but you can at least test out different cables and chargers you may have to see if maybe one of those hardware pieces is the culprit.

Very slow charging...

Is anyone else experiencing this problem or is it just how long it takes to charge this tab?
Plugged into the charger for an hour with the tablet off and it's only charged 15%. So it's going to take 6 and a half hours to fully charge?
Also the battery seems to die pretty quickly from just normal Web browsing. From 40 to 15% in an hr.
Battery life / charging / Simpsons tapped out lags / lots of stuttering with TouchWiz...
I want to be happy with this tab but it hasn't been easy

My battery life improves after a few charging cycles. I found Samsung charger is slow but not too bad. Mine charges about 30% an hour with tablet powered on but not in use. It goes a lot faster when using Nook HD charger, though both have 2.0A output.

My Note 3 charges so much faster that it's not even funny. And considering it's 10000 mAh...

Yep charges super slow. No idea why. Also drains super fast surfing web. People talk about getting 8 hours on this. Im lucky to get 4 but then again i like brightness high.
Use a launcher to improve Touchwiz stutter (funny that some folks complain about this stutter thing - on 10.5 have never experienced it even without a launcher).

cyi1 said:
Is anyone else experiencing this problem or is it just how long it takes to charge this tab?
Plugged into the charger for an hour with the tablet off and it's only charged 15%. So it's going to take 6 and a half hours to fully charge?
Also the battery seems to die pretty quickly from just normal Web browsing. From 40 to 15% in an hr.
Battery life / charging / Simpsons tapped out lags / lots of stuttering with TouchWiz...
I want to be happy with this tab but it hasn't been easy
Click to expand...
Click to collapse
Try to power down for a few minutes and then see if there was a difference after you powered on.
You can also check the task manager to see what is running on your system.
Sent from my HTC6435LVW using Tapatalk

Peter234 said:
Try to power down for a few minutes and then see if there was a difference after you powered on.
You can also check the task manager to see what is running on your system.
Sent from my HTC6435LVW using Tapatalk
Click to expand...
Click to collapse
I always kill apps when I'm done with them. Guess I'll give rooting and removing all the Samsung apps a shot.

I got some decent battery life out of mine when I had it about 6-8 hours mixed use. Def noticed a big drop when surfing the web using white backgrounds. Charging also was painfully slow on mine I think around 3-4 hours from 0 to full charge for me when not in use.

It's been a staple of their latest tablets unfortunately. Just make sure you're using the stock cable/adapter as some of the aftermarkets don't have enough power. For example, I have a 10 foot cable but it only puts out one third the power then the included power cable using the same adapter.
Sent from my SM-T800 using Tapatalk

Try using Galaxy Charging Current lite it helped me. I was using a Anker intelligent charger and it took forever to charge it. App showed current at 350-450mA. Used Samsungs and it showed 1800mA.

I have to agree, just received the tablet today albeit stressed out to the max because the fedex guy marked it as delivered when it wasn't to squeeze out extra minutes for a break (seriously?!?) I thought it got ripped off! So, back to the battery, I turned on the tab, beautiful this thing is by the way...and was at 62% out of the box. I began charging it using the included power cable and adapter, and 3 hours later I realized just how long this was taking to charge. Granted I was using it practically the whole time, I am hoping a higher amp charger will fix this for me.

Yup it took me 5.5 hours to charge fully. I'd be lucky if i get 5 hours of usage before the juice runs out.

8.4 inch charges fines here. 2.5 hours max, powered on or off.
Sent from my SM-G900F using Tapatalk

Charge time isn’t particularly fast on any of the devices, but the 10.5-inch model in particular takes a while to make it to a full charge. The 10.5 will reach a 90% charge in just under 4 hours, but to make it to 97% takes another hour and the last 3% takes another 42 minutes on top of that. Usable charge time is competitive, but if you’re obsessive about always charging to 100% the 10.5-inch model does take a while to get there.​​
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/3

BarryH_GEG said:
Charge time isn’t particularly fast on any of the devices, but the 10.5-inch model in particular takes a while to make it to a full charge. The 10.5 will reach a 90% charge in just under 4 hours, but to make it to 97% takes another hour and the last 3% takes another 42 minutes on top of that. Usable charge time is competitive, but if you’re obsessive about always charging to 100% the 10.5-inch model does take a while to get there.​​
http://www.anandtech.com/show/8197/samsung-galaxy-tab-s-review-105-84inch/3
Click to expand...
Click to collapse
Mine seems to charge quicker than what is stated on that chart. Will have to time it from 0% next time.
Sent from my SM-G900F using Tapatalk

The charger that comes with the tab s is the same all new galaxy devices are shipping with. They do 5.3volts instead of just 5 volts. You will get a little quicker charge with the stock charger.

I get a legit 6-8 hours SOT mixed use
Sent from my SM-T800 using XDA Premium 4 mobile app

Slow charging NO charging
I hope this is okay to post here since it is a charging problem. I am on my third SM t-800. Mine stop charging all together! First one charged one time then stopped. Second on would not charge at all, It used up its factory 45% that it shipped with and nothing more. Third one was best by far and charged untill this moring and has stopped. Now, here are the details. I checked the cord by pluging into my note 3 on all of them. Infact my wifes Note 2. They charge fine. I don't have my ameter to check ampers but they clearly are delivering volts to the other devices. Now get this. I have a Bose external speaker that uses a mini usb. I plugged that one into the tablet and it is charging right now. Of note I had a concern that maybe some how the socket was bumped on the tab and somehow messed it up. But that is a long shot since the first two were used while only on a desk. So this third one has been supper "babied". I'm so frustrated right now.
BTW my first tab charged very slowly. 6-7 hours or so. Maybe more? I feel at this point the pins in the tab are not making contact. Any thoughts?
JL
---------- Post added at 02:10 PM ---------- Previous post was at 01:28 PM ----------
Just got of the horn w/ Samsung. Got issue taken care of. In short, the phone tech mentioned ampreage and I yanked the AC transformer off the wall and checked it. The factory transformer is 5.3v. 2.00ampers. In the dark last night i plugged into a "white" charger. An ipad charger I think, that is 5.2v. 2.4amp transformer. I switched the cord to the corect transformer and the tab is charging. Apparenty the chip in the tab was protecting the unit from over ampreage and it shut down charging. I know better than this and feel like a fool but thought I should let you all know what happened. This brings up a issue. Slow charging.... could the slowness be caused by a transformer with say 1.5 amps? Maybe the tab will let it charge but at a slow rate? Just a thought. Moral of the story for me? Plug in the tab in a lighted area, and into the correct charger.
Signed,
Embarrased

Charging is a little slow, but the battery is large, so i accept that, but when it's charged 100% it lasts for ages. Faster charging shortens the life of the battery anyway. I could easily get 7- 8 hours constant surfing out of this tab. I've been on it now for over 2hrs surfing and it's used 13% . I always use auto brightness.

I get 6-8 hrs of mixed use, YouTube, surfing the Web and some movies with a little gaming. It takes me around 4 hrs to fully charge. Battery life is average. I'm using a 10.5 LTE.
Sent from my SM-T805

ashyx said:
Faster charging shortens the life of the battery anyway.
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Click to collapse
Technically this is not true at all. It is heat that hurts batteries. You can charge as fast as you want as long as you keep it cold. That being said, Lithium Ion batteries will take a much faster charge rate and not cause heat. You could easily charge this battery in 2 hours, but the common chargers aren't that powerful.