Develop Bugs

Found possible proper battery Calibration for mango Update beta

After updating my HTC HD7 to mango update Beta, i found the battery draining faster than Nodo. With Nodo a proper HTC soft reset could do the trick sometimes but the soft reset does not seem to calibrate the battery. On HTC website its stated that "Perform a soft (normal) reset to clear all active program memory and shut down all active programs. This is useful when your phone is running slower than normal, or a program is not performing properly....". Nowhere in the htc website says soft reset calibrates battery, what it actually does is fresh boot up of OS
here is what i found out after days of experimenting
the battery indicator is inaccurate because mango changed the core OS
to a new one probably screwing up the battery indicator too. if u expereince unusual short battery life while during usage, or in standby with push and radios oN. The battery indicator is overestimating and showing 100% when it could probably be 50 % or some other value. Hence the reason why the battery is being used up faster because its not showing the real charge. Imagine u take a container and fill up to to 50% only and some kind of indicator show that its 100%. indicator tries to catch up with the false reading as the battery drops in usage hence giving the scenario of battery draining faster than usual. So the solution is not to charge it repeatedly to 100% because the charge indicator will still show as inaccurate since the circuitry cuts of charging at 100% indicator and shuts down at 0% with the false reading range. Many references recommend to charge the battery overnight for 8 hours or so., or leave it to trickle charge ect This is wrong because this works only for fresh new batteries that are not "primed"
I let the phone drain fully until it cannot turn on and charged to 50% and it noticed it seem to last longer or just as good as NoDO. thinking that something is amiss or altered here, i then let it go to
1 % Then charged it back to 100%. U should notice that full charging will take longer than usual. Around 2 hours ++.
1) Fully drain the battery till the phone shuts off
2) Charge the battery to 50%
3) run down the battery to 1%
4) Fully charge it to 100%
5) repeat the procedures 3) and 4) a few times for the next few days whenever its possible and follow the same routine every time u charge
Here is a diagram explaining how i came to the conclusion. Report back if the battery life has improved for u
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My phone doesn't shut off when it's fully charged you may want to explain that one better
Sent from my arrive using XDA Windows Phone 7 App

kwajr said:
My phone doesn't shut off when it's fully charged you may want to explain that one better
Sent from my arrive using XDA Windows Phone 7 App
Click to expand...
Click to collapse
Why does it need to shut off?

I also found that the battery seemed to drain pretty quick. But this sounds logical. I'll test you method and report back.

Some where r all over the place , its stated that many devices using lithium ion have battery indicator problems .
Maybe this s the problem.

What did you edit in your op
Magpir said:
Why does it need to shut off?
Click to expand...
Click to collapse
Sent from my arrive using XDA Windows Phone 7 App

anyone have improved battery life in this method??

I suggest to read this or this and this before you exercise this procedure. Here are the main points:
- A Li ion battery loses about 20% capacity per year if fully charged at typical average temps of 25C. It only loses 4% if charged to 50% (all of this highly temperature dependent).
- Li ion batteries have no memory effect (holding less charge)
- completely draining a Li ion battery is bad (if you let it sit in this state you may end up with a dead battery)
- shallow discharges are best (let the battery drain to 15-20%, then recharge)
in summary, the more you stress the battery by charging/discharging the sooner it will see its end of life. The best is to keep it at values of 50-60% charge. Of course this is not always practical (trips etc), just try not to always push it to 100% if possible.
if you think the OS/battery indicator interprets the battery level incorrectly, that is a whole different story of course and would be a major flaw (and could be manufacturer dependent). I did not see any difference between NoDo and Mango on mine.

My method is not deep discharging the battery. Its to calibrate the indicator as seems that the os is controlling the indicator

Also do note that one yr phone comes new, ita battery is charged to 40% only.

Basically there's a sensor in your phone that is used by your phone to tell how full/empty the battery is.
This sensor doesn't actually know how full your battery is, all it knows is how much power is coming from your battery at the time. The problem it has is that all batteries are slightly different, and their capacity goes down over time and usage (a three year old battery will not be able to hold as much charge as a brand new battery).
Your phone keeps a record of the maximum power it's ever had from the battery, as well as knowing the minimum power that it can safely work with before it has to turn itself off. It uses the difference between those two numbers, and the current power at any time to calculate how much percentage of your battery you have left at that time. So with a new battery, the phone might be telling you that the battery is fully charged because it's charged to the highest level the phone's ever seen, but if you leave it charging a bit longer then it might charge more, and then the phone can recalibrate itself and use this new value as the most it's ever seen.
You should only need to do this "over-charging" with a brand new phone/battery, after that the phone know the maximum values, and can more accurately tell you when it's full.

The correct way is to charge it from 1% always once its calibrated.

derausgewanderte said:
I suggest to read this or this and this before you exercise this procedure. Here are the main points:
- A Li ion battery loses about 20% capacity per year if fully charged at typical average temps of 25C. It only loses 4% if charged to 50% (all of this highly temperature dependent).
- Li ion batteries have no memory effect (holding less charge)
- completely draining a Li ion battery is bad (if you let it sit in this state you may end up with a dead battery)
- shallow discharges are best (let the battery drain to 15-20%, then recharge)
in summary, the more you stress the battery by charging/discharging the sooner it will see its end of life. The best is to keep it at values of 50-60% charge. Of course this is not always practical (trips etc), just try not to always push it to 100% if possible.
if you think the OS/battery indicator interprets the battery level incorrectly, that is a whole different story of course and would be a major flaw (and could be manufacturer dependent). I did not see any difference between NoDo and Mango on mine.
Click to expand...
Click to collapse
What this guy said. I haven't seen a big change in battery performance either, at least on really intensive tasks like web browsing (at least on my phone). Other than that it seems to discharge a lot slower. On the other hand, I'm wondering if all feedback I'm sending back to Microsoft is having some impact. Perhaps I'll turn those off to see how it performs.

ScottSUmmers said:
What this guy said. I haven't seen a big change in battery performance either, at least on really intensive tasks like web browsing (at least on my phone). Other than that it seems to discharge a lot slower. On the other hand, I'm wondering if all feedback I'm sending back to Microsoft is having some impact. Perhaps I'll turn those off to see how it performs.
Click to expand...
Click to collapse
the battery performance is
dependent on the battery capacity.
Calibration helps to maximize the phone battery capacity without the indicator shutting it off prematurely.
imagine yr car has a petrol indicator which is wrong and it shuts off yr car because it thinks that the petrol is used up
but u still find that there is a good amount of petrol left but the car is not using them because of the indicator which shuts down the car prematurely

Magpir said:
the battery performance is
dependent on the battery capacity.
Calibration helps to maximize the phone battery capacity without the indicator shutting it off prematurely.
imagine yr car has a petrol indicator which is wrong and it shuts off yr car because it thinks that the petrol is used up
but u still find that there is a good amount of petrol left but the car is not using them because of the indicator which shuts down the car prematurely
Click to expand...
Click to collapse
Again, if you assume the Mango OS interprets the battery circuit wrong (controller IC built into battery), then something is utterly wrong of course and needs to be addressed. I have not seen many people here having problems with battery life that would be alarming. This should also be manufacturer dependent as the battery status is first interpreted by the phone's hardware before it goes to the OS....
my two cents...

derausgewanderte said:
Again, if you assume the Mango OS interprets the battery circuit wrong (controller IC built into battery), then something is utterly wrong of course and needs to be addressed. I have not seen many people here having problems with battery life that would be alarming. This should also be manufacturer dependent as the battery status is first interpreted by the phone's hardware before it goes to the OS....
my two cents...
Click to expand...
Click to collapse
there are in fact alarming battery problems in wp7 phones.
do a quick google.

Magpir said:
the battery performance is
dependent on the battery capacity.
Calibration helps to maximize the phone battery capacity without the indicator shutting it off prematurely.
imagine yr car has a petrol indicator which is wrong and it shuts off yr car because it thinks that the petrol is used up
but u still find that there is a good amount of petrol left but the car is not using them because of the indicator which shuts down the car prematurely
Click to expand...
Click to collapse
No I understand what you're saying, and I've done calibrations before. However, I was just quoting derausgewanderte as a warning that letting it discharge to 0% will decrease the life of your battery faster. If it's of no concern to you by all means.

Yes my method did not advocate draining to 0% multiple times. Only once as regular calibration routine

Magpir said:
Yes my method did not advocate draining to 0% muryople times. Only once as regular calibration routine
Click to expand...
Click to collapse
1% - 0%: how would you be able to tell the difference if your argument is that the indicator reading is wrong?

derausgewanderte said:
1% - 0%: how would you be able to tell the difference if your argument is that the indicator reading is wrong?
Click to expand...
Click to collapse
scroll up and read my first post.

[Q] Weird battery discharge

Hi fellas..
Maybe you've noticed the messages I've sent to Unofficial BravoS thread of Coolexe's (http://forum.xda-developers.com/showthread.php?t=1200517&page=51) which is the ROM I use.
The issue is, the battery discharges rapidly. Actually, if you check mV values, it doesn't discharge rapidly, but if you look at percentages, there is a huge inconsistency. I used Battery Monitor Widget to log the battery performances last night, and saw these horrible results:
Code:
2011/09/19|04:59:49|-515mA|37%|3581mV|40.2ºC|1|0
2011/09/19|05:00:51|-465mA|36%|3576mV|40.2ºC|1|0
2011/09/19|05:01:49|-460mA|36%|3576mV|40.2ºC|1|0
2011/09/19|05:02:50|-462mA|35%|3517mV|40.2ºC|1|0
2011/09/19|05:03:49|-477mA|35%|3517mV|40.2ºC|1|0
2011/09/19|05:04:50|-471mA|34%|3449mV|40.3ºC|1|0
2011/09/19|05:06:06|-478mA|0%|3415mV|40.5ºC|1|0
2011/09/19|05:06:08|-478mA|0%|3415mV|40.5ºC|1|0
These are the last lines of the log, before the phone shuts down. As you can see, the phone gone to 0% from 34% in one minute! No low battery warnings or whatsoever..
Funny thing is, this doesn't happen in StarBurst ROM (which is a Froyo based one). Do you reckon this is a GingerBread issue or something? I saw some other people complaining about their phone shutting down at 20% as well.
So, what do you suggest?

when you look at the voltage there isnt that much drain, so its only a displaying problem
wipe battery stats and maybe recalibrate the battery
but first one should fix it
cheers
ps: i just checked, my desire is at 18% with 3.693mV, now you see the differance

crendot said:
when you look at the voltage there isnt that much drain, so its only a displaying problem
wipe battery stats and maybe recalibrate the battery
but first one should fix it
cheers
ps: i just checked, my desire is at 18% with 3.693mV, now you see the differance
Click to expand...
Click to collapse
This is what I've done so far:
Drained battery to 0% (log above) and charged it a little bit while powered off (like 20%). Turned on the phone, and obtained those logs (last lines only):
Code:
2011/09/19|14:41:25|-268mA|10%|3644mV|38.1ºC|1|0
2011/09/19|14:42:25|-267mA|10%|3644mV|38.1ºC|1|0
2011/09/19|14:43:25|-270mA|10%|3644mV|38.1ºC|1|0
2011/09/19|14:44:25|-269mA|9%|3644mV|38.1ºC|1|0
2011/09/19|14:45:25|-267mA|9%|3644mV|38.1ºC|1|0
2011/09/19|14:46:25|-268mA|9%|3644mV|38.1ºC|1|0
2011/09/19|14:47:25|-266mA|8%|3644mV|38.1ºC|1|0
2011/09/19|14:48:25|-267mA|8%|3644mV|38.1ºC|1|0
2011/09/19|14:49:25|-269mA|7%|3640mV|38.0ºC|1|0
2011/09/19|14:50:25|-267mA|7%|3640mV|38.0ºC|1|0
2011/09/19|14:51:25|-266mA|7%|3640mV|38.0ºC|1|0
2011/09/19|14:52:25|-267mA|7%|3640mV|38.0ºC|1|0
2011/09/19|14:53:25|-267mA|6%|3640mV|38.0ºC|1|0
2011/09/19|14:54:25|-267mA|6%|3640mV|38.0ºC|1|0
2011/09/19|14:55:25|-267mA|5%|3635mV|38.0ºC|1|0
2011/09/19|14:56:25|-266mA|5%|3635mV|38.0ºC|1|0
2011/09/19|14:57:25|-267mA|5%|3635mV|38.0ºC|1|0
2011/09/19|14:58:25|-268mA|5%|3635mV|38.0ºC|1|0
2011/09/19|14:59:25|-268mA|4%|3630mV|38.0ºC|1|0
2011/09/19|15:00:25|-319mA|4%|3630mV|38.0ºC|1|0
2011/09/19|15:01:25|-268mA|4%|3630mV|38.0ºC|1|0
2011/09/19|15:02:25|-270mA|3%|3610mV|38.1ºC|1|0
2011/09/19|15:03:25|-269mA|3%|3610mV|38.1ºC|1|0
2011/09/19|15:04:25|-270mA|2%|3586mV|38.1ºC|1|0
2011/09/19|15:05:25|-273mA|2%|3586mV|38.1ºC|1|0
2011/09/19|15:06:25|-273mA|2%|3586mV|38.1ºC|1|0
2011/09/19|15:07:25|-273mA|2%|3586mV|38.1ºC|1|0
2011/09/19|15:08:25|-289mA|1%|3513mV|38.3ºC|1|0
2011/09/19|15:09:25|-290mA|1%|3513mV|38.3ºC|1|0
2011/09/19|15:09:51|-290mA|0%|3464mV|38.3ºC|1|0
It seems more "smooth" discharge now. Right now, I'm charging my phone off; going to turn on phone once it reaches "green light" with charger on, and plug it off once phone booted. Maybe then, it can know what's maximum and minimum.
So far, I tried to charge my phone to full and erase batterystats.bin but, as you can see at the first post, it didn't work well.. On the other hand, the phone charged-discharged only once in this ROM, you think it could be better if I've given a "second chance"?

i dont know much about that "battery calibrating" and reseting stuff, you have to search in the forum
only thing i want to say is, dont do that deep drains!
recharge at least 5%! you kill your battery, lithium-ion batterys get serious damage from deep drains

crendot said:
i dont know much about that "battery calibrating" and reseting stuff, you have to search in the forum
only thing i want to say is, dont do that deep drains!
recharge at least 5%! you kill your battery, lithium-ion batterys get serious damage from deep drains
Click to expand...
Click to collapse
I know, but when phone thinks it's 30% and not warn me, how can I do it?

In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!

TVTV said:
In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!
Click to expand...
Click to collapse
Thanks for your answer...
Today I realized that it my concern was a quick one. Today, I discharged battery to 0 percent, plugged the AC charger while it's OFF and charged it for around 2h22m until Led-green-full; then turned on the phone with charger plugged and plugged it off just after the boot process. After that, I let the phone to discharge (I helped it a little )
I actually saw "Plug your charger" warning this time, and according to Bat. Mon. Widget, it gone down until 13%! If I do compare the mV values with the old ones, I can see that somehow the phone does learn which mV value correspond to which percentage better.
Even though it gone from 13% to 0% in two minutes, it's at least better than 30% to 0%.. Also, when I check the readings after I plugged in, I saw that percentage-voltage matching is slightly higher, showing that the phone now shows lower percentage for the same voltage - which shows that it learns percentage better.
After one or two charge-discharge cycle, I think it'll learn absolute 0
BTW; the battery says 3.4V 1400mAh and my maximum voltage is 4160mV (100%) and minimum is 3415mV (0%). Are these values normal, you think?
PS: What I'd recommend from anyone who loves flashing ROMs as much as I do is: AFTER YOU FLASHED A NEW ROM, CHARGE YOUR BATTERY TO FULL (100%) AND ERASE THE BATTERY STATS. AFTER THIS, NEVER, I SAY, NEVER ERASE YOUR BATTERY STATS FOR LONG TIME IN ORDER FOR YOUR PHONE TO LEARN STATS BETTER! Erase after long time, say 3 months for wear effects to be accounted, but well, I think you should be fine even after you don't do this
Maybe you did already know that, but, well, I learned it hard way
EDIT: Phone shutdown at 13% after this, but I think it'll do better in time..

Can't Calibrate the Widget
I am having a similar issue with my htc aria. Problem is that it gets to about 78% and then won't go any higher. It even shows (in Battery Monitor Widget)
"Discharging" and "AC plugged". I have let it sit plenty long enough to be fully charged and then completely discharged it (until it shut itself down, which was not 0%) and recharged until it reaches 78% again and stops charging. I'm guessing it is so far out of whack that it says I'm at 78% but I am really at 100%.
The widget says to charge to 100% and then drain completely to 0% to calibrate. I can't do either from what I can tell. So what to do?

theGanymedes said:
Today, I discharged battery to 0 percent, plugged the AC charger while it's OFF and charged it for around 2h22m until Led-green-full; then turned on the phone with charger plugged and plugged it off just after the boot process.
Click to expand...
Click to collapse
Quick tip - let the phone charge for another hour or so after the light goes green (when charging it while powered off). I've read that the light goes green at about 95%. It takes another hour for the phone to really charge to 100%. That's because Li-Ion batteries use two stages to charge: a fast one and a slow one. More details here.
Glad i could help.
P.S. - It also took me two complete charge/discharge cycles to fully calibrate my battery meter after switching from FroYo to Gingerbread.
@vkyjackie - Try fully charging the phone while powered off. If it still doesn't fully charge (LED green), then you might have an issue with either the battery pack or the wall charger.

[Q] Battery worn out?

Hello,
My desire, after:
an inability to restore nandroid backup
a possible corrupted sd card
a usb brick and inability to mount some nand partitions
and finally succeeding in fixing it, now using/running:
2.29.405.5 stock rooted rom
a new sd card (samsung 16GB class 6)
clockworkmod 2.5.0.7
s-off
seems that has battery issues. When it reaches below 30%, it drains a lot faster. In example few minutes ago, the battery was below 30% level and after sending a couple of sms messages the phone, without the "Connect the charger" indication shut down. Not even the battery icon was red.
What should I do?
After flashing the above ROM I ran an app called battery calibration (could this be the culprit?).
I haven't experienced such problems before the whole mess mentioned above.
Thank you for your time.

Well, it seems to me like a "classic" battery meter calibration issue.
TVTV said:
In order to calibrate the battery meter - FYI the battery itself cannot be calibrated, as Li-Ion batteries have a very low memory compared to old Ni-Cd etc. batteries - you have to go through the following procedure:
1) charge the battery to 100%;
2) let the battery discharge until the phone shuts itself down;
3) plug the wall charger into the phone, boot the phone up then charge the battery to 100% without interruptions.
If the above procedure does not yield the expected results, you can try fully charging the phone (LED showing green) with it completely turned off (after completely draining it). Again, the charging procedure should not be interrupted.
Source: personal experience - had to do this twice after installing new ROMs, as the phone was shutting down at ~14% (working like a charm now).
Regarding the matter of battery wear because of complete discharges, Li-Ion batteries do indeed have a lower cycle count than old-school batteries, but the standard charge/discharge number a Li-Ion battery can take is ~350, so you can't damage the battery pack by doing a full cycle per month (required to keep the battery meter accurate).
Good luck!
Click to expand...
Click to collapse

Did this work you mate? I have the same issue with my year old batter now... the phone shuts down @ 40% without any warning... and when I charge it, it starts from 0% and as soon as it hits the 58% mark, it jumps to 100% by itself... and i cant seem to figure out what the hell could I do to fix it... I tried calibrating the battery using the awesome method described here http://forum.cyanogenmod.com/topic/11823-battery-calibration-thread 3 times and nothing changed...

bump bump.. i really need help on this guys... :/
Sent from the infinity and beyond...

Weird that after calibration you still get that kind of issues, does this only happen on your current ROM? I have the latest CM in my desire and everything works just fine... Maybe try another ROM if calibration doesn't work to see if it's a hardware or software issue

i actually had issues with MIUI first.. the phone randomly shut down by itself but when i turned it back on, it was perfect... then i switched back to Oxygen and while everything was fine, suddenly one day the phone died at 40% :S and from that day on the phone charges to 58% and then instantly jumps to 100%... and as soon as it gets to 40% it shuts down itself... i guess i need a new battery but i wanted to see wether i can fix this one somehow so i can use it till the new one arrives...
Sent from the infinity and beyond...

same problem
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration

kshitijgandhi said:
i have the same problem
my phone turns off at 20% battery
calibration does not help....
and battery is not bad - it works fine
i'm sure its the problem with calibration
Click to expand...
Click to collapse
phone turning off at 20% is fine mate because thats the battery guards against any damage
most of the phones ( smart phones) switch off at 20% as going lower can damage the System .

It shouldnt normally..It's supposed to work fine upto 5%

Have a look at this, it worked for me (but you need a compatible kernel, most AOSP are so)
http://forum.xda-developers.com/showthread.php?t=765609

Battery charge from 80% to 100%=(

Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?

U can buy new battery from DEALEXTREME.com

so its the only way?

Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.

Gizmoe said:
Try this.
Charge battery to full. Leave plugged in, Turn off fastboot in power settings and shut phone off. Light will turn orange again and let it charge til green. Boot into recovery and wipe battery stats. After this let the battery drain as low as 10% before recharging to full without unplugging. Do this a few times over a few days. If you don't get more accurate percentages after this then the battery could be messed up.
Click to expand...
Click to collapse
thx i will try.

i have the exact same issue. i have done battery stat wipe..flashed multiple roms over and over with full wipe and all that. battery charges up to 80% then the LED turns green..and stays that way till it reaches 100%. it jumps from 80% to 100% in just a few minutes.

battery jump
I wouldn't worry Lendlord mine does the same (see attached pic) you can see the green line jumps up from 80 to 100 but doesn't jump down from 100 to 80 under use. The picture is taken from Battery monitor widget, it's a great app which shows mv, ma, % and temp and even keeps a text log of what ma drain there has been allowing you to monitor battery drain while you're using your phone or while it is sleeping.
Here's a great guide aswell of how to ensure best battery life by memnoc:
forum.xda-developers.com/showthread.php?t=1226016

so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?

LendLord said:
so thats mean that some battaries have the same issue=( And there is no solution for it...
HTC failed again...
first GPS and now the battery. Bad, very bad!
And one more request.
Can someone post your current widget log?
Click to expand...
Click to collapse
I have the same thing happen to mine, i think its because you've let your DHD die due to low battery levels and that damages the battery which i think causes this problem

..letting the phone shut off because of a completely discharged battery is NOT good for the lifetime of Li-ION batteries.
The battery could be hurt and the amount of mAh the battery is able to store might be lower after.
Also trying to 'pump' the battery to fully charge by connecting / disconnecting while the phone is down is not a good advice because li-ion batteries also don't like overcharging.
To be sure that the battery is fully charged due to its ability it is sufficient to let the phone be conectet to charger or usb overnight.
Android uses the voltage of the battery to estimate (!) the % charge value.
Android supposes the battery is fully charged when it enters the voltage of about 4.2 Volt which is the charging cut-off voltage for li-ion cells.
Now when charging again the conceded voltage is reached more quickly than estimated by android, so the system is 'surprised' of this rapid charge and changes the % value to 100% because the conceded voltage is reached more quicklyy as supposed.
(Try to fill a 0.5ltr beer bottle into a 0.33 glass)
This is the normal of aging for li-ion batteries.
Consider for yourself if it's acceptable for you or if you should by a new battery.
by the way... be careful with cheap china batteries for 10$.
Offers with exaggerated values (up to 1600mAh) will mostly keep their promises
only for the first two or three charges only and will than fall back to 800 mAh or even less !
Greetz
Pudel

Yeah...
My battery started to do the same thing for a week or two. It will charge to 86% then it jumps to 100%, saying it's charged.

This is normal afaik, nothing to worry about.
Sent from my Desire HD using xda premium

solve
actually，it's the problem of your rom , in the framwork.apk . unzip it you will get a lot of battery icon form 1%to 100% in the res file ，if it made mistake，that 'your problem. you can go to uot kitchen to coustom it again.

Nope!
I've solved my problem. I've bought a new (original) htc battery, and the new one works great. I haven't reflashed the rom, or made any new modification. Just added the new battery.
So, yes, it's a faulty battery.

LendLord said:
Hi, sry for my english=(
When i charge my battery its normally charge to 80% and then becomes 100%.
Try calibrate battery but this doesnt help. Also try another roms and kernels.
Is it a battery issue?
Click to expand...
Click to collapse
Download Current widget from market and charge ur phone then wait for the 0 ma then download the battery calibration app from market too and calibrate and unplug ur phone, u can aslo reboot to recovery and wipe battery stats hope it helped you

Question Battery Misbehaving (Is it just me?)

Just bought this phone brand new and had the sense that the battery was draining pretty quickly. I noticed some weird behavior when charging to full and turning the phone off for some time and wanted to ask if it might just be a software issue. Also had a few more questions.
So the first issue is I saw happened after attempting to calibrate the battery by charging from 0-100% and past 100 until charge current was zero or negative (note I didn't bump charge it). I turned the phone off for an hour and turned it on again and it showed 97% despite me charging it to what I thought was actually 100%. To see if something was draining the battery I turned it off overnight again and when I turned it on it only went down 1% over 7-8 hours. Leading me to suspect a software issue. I used the 60 watt charger that came with the phone.
Another thing I did was try to get a battery health with accubattery. Using the 60 watt charger I'm surprised to see it estimated the capacity as 4400mAh and not 5050mAh. Can anybody confirm if they are getting the same results? (Charged in airplane mode with the internal fan off in a cool ventilated place).
Finally did the Netflix video test to compare the 6s to 5s and they are around the same with the 5s slightly ahead on playtime. Despite me matching brightness close enough that it was indiscernible which display was brighter. I played the exact same video synced and looped on both with audio off and the 6s hit about 14.5 hours at roughly 33% brightness.
Was wondering if somone could run some accubattery tests with the stock charger and see what you get?(you'd have to reset accubattery and charge from 0-100% and past 100% until charge current is negative).
Anyone else having battery wonkiness like this?

Can anyone please do me a solid and check average and max battery discharge rate with accubattery? I'm trying to figure out if I got sold a lemon.
With brightness set to the following at 60 Hz and wifi off.
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

And does anyone know if accubattery directly reads discharge current or only estimates it?

Hi. Maybe i am not really
Dog&Banana said:
Can anyone please do me a solid and check average and max battery discharge rate with accubattery? I'm trying to figure out if I got sold a lemon.
With brightness set to the following at 60 Hz and wifi off.
View attachment 5477375
Click to expand...
Click to collapse
This is from my rm 6pro global version result for your reference. Hope it helps for the comparison purposes. Tbh, i never crack my head off thinking about this overnight. But if you just bought the 6s pro and installed this apps to the phone, let it study your usage behavior maximum for a week to get a better result.

Dog&Banana said:
And does anyone know if accubattery directly reads discharge current or only estimates it?
Click to expand...
Click to collapse
I've been using for months and this part is what i am concerned the most. Looks scary though?

Hey man. Thanks so much for looking into this for me . This is quite helpful
What refresh rate is your display set at most of the time? And do you usually have auto brightness on or is the brightness shown in your screenshot around where it usually is? Do you game heavily daily?
Your battery usage seems a decent bit higher than mine. But I'm glad to see our capacity estimates are in the same ballpark.

Also. I noticed if I charge my phone with the bundled charger. After I turn it off for a few hours and turn it on again the battery % is always suddenly 5 to 9% lower than it was when I turned it off. Does yours do this too or is my battery a dud?

That's not how batteries fail.
Something in the background is draining it.
The charge current draw can vary widely depending on charge state and temperature.
Real time charging current readings are only valid for the first second on Accubattery as once it updates with the display on that will skew the reading. You have about 1 second until Accubattery refreshes so have that window open and look fast.
The power controller won't/can't use the same charging curve with the display on... and will charge much slower. It ramps down the charger current draw to protect the battery when the screen is on. Avoid using while charging.

Dog&Banana said:
Hey man. Thanks so much for looking into this for me . This is quite helpful
What refresh rate is your display set at most of the time? And do you usually have auto brightness on or is the brightness shown in your screenshot around where it usually is? Do you game heavily daily?
Your battery usage seems a decent bit higher than mine. But I'm glad to see our capacity estimates are in the same ballpark.
Click to expand...
Click to collapse
Most welcome. It is coincidence that i taking a walk in this forum and saw your post, so it is like my responsibility to respond at least as for your reference. Really glad that i can help you on that.
Refresh rate 99.9% of my usage will be 60hz to get my phone on long marathon for whole day. But i am charging the phone quite frequent as I am addicted to Asphalt9 and i have to settle down with the addiction.
Most of the time i would prefer auto-brightness but would make some adjustment depending on my surrounding. Dragging as your brightness level on your post for your comparison with mine.
Yes. I am addicted to Asphalt9 and keep playing for almost 10 hours per day. And forcing me to keep my charger set standby in my bag to be use whenever it required.

Dog&Banana said:
Also. I noticed if I charge my phone with the bundled charger. After I turn it off for a few hours and turn it on again the battery % is always suddenly 5 to 9% lower than it was when I turned it off. Does yours do this too or is my battery a dud?
Click to expand...
Click to collapse
Just for my own theory. Our phone is like car. Whenever it started, it will trigger all system around the 'engine' and forcing some energy to launch all the applications at the same time before you start to use it. But it side effect is painful to see you battery getting drop that much than giving you a little pleasure for a kickstart of the day. I tried once or twice to check on that kind of situation earlier, it dropped within 1-2% only. But the stranger thing i observed, after it got fully charged, and you unplug the charger, you may see it drooping 1% after few seconds. Still be a mystery to me.

blackhawk said:
That's not how batteries fail.
Something in the background is draining it.
The charge current draw can vary widely depending on charge state and temperature.
Real time charging current readings are only valid for the first second on Accubattery as once it updates with the display on that will skew the reading. You have about 1 second until Accubattery refreshes so have that window open and look fast.
The power controller won't/can't use the same charging curve with the display on... and will charge much slower. It ramps down the charger current draw to protect the battery when the screen is on. Avoid using while charging.
Click to expand...
Click to collapse
I am totally agreed with you as to test the charging speed, the apps does remind us to turn off the display and check after few moments then you can see the charging process is functioning based on when the charging started & for how long was the screen being asleep while charging.
Psst~~ i have a bad habit by using my phone while its charging as i did right now to reply your comment here.

imNazreen said:
I am totally agreed with you as to test the charging speed, the apps does remind us to turn off the display and check after few moments then you can see the charging process is functioning based on when the charging started & for how long was the screen being asleep while charging.
Psst~~ i have a bad habit by using my phone while its charging as i did right now to reply your comment here.
Click to expand...
Click to collapse
It's better to do brief midrange power cycling (40-72), Li's like being cycles like this. It reduces the wear on them a lot. Only takes 10 or 15 minutes.
So when you take a break, let it charge.
You can listen to music on bt with Poweramp with the screen off and not effect the charge curve.

blackhawk said:
It's better to do brief midrange power cycling (40-72), Li's like being cycles like this. It reduces the wear on them a lot. Only takes 10 or 15 minutes.
So when you take a break, let it charge.
You can listen to music on bt with Poweramp with the screen off and not effect the charge curve.
Click to expand...
Click to collapse
Another thing i would like to seek your advice, does the 'charge separation' is really useful while gaming? Does it affecting our battery life if being enable frequently for a long hours gaming?

imNazreen said:
Another thing i would like to seek your advice, does the 'charge separation' is really useful while gaming? Does it affecting our battery life if being enable frequently for a long hours gaming?
Click to expand...
Click to collapse
High discharge rates and back to back fast charging is hard on the battery.
Best to give it some rest breaks especially when you start using more than 10%@hr.
Expect a battery lifespan of about 1-2 years on a heavily used device.
I watch a lot of vids on my N10+ and will replace the battery after about a year, sooner if needed.
It's simply not worth the risk of damaging the device over a $16 battery.

blackhawk said:
High discharge rates and back to back fast charging is hard on the battery.
Best to give it some rest breaks especially when you start using more than 10%@hr.
Expect a battery lifespan of about 1-2 years on a heavily used device.
I watch a lot of vids on my N10+ and will replace the battery after about a year, sooner if needed.
It's simply not worth the risk of damaging the device over a $16 battery.
Click to expand...
Click to collapse
I see..and hell yeah to look for a rm6 pro battery is not an easy thing and not always ready on stock.
Fyi, i have some OCD symptoms which i could not see any less than a full charged battery capacity before i am going out. Is it affecting to our battery life span if it keep full charged even my battery still got more than 50%-80%?

imNazreen said:
I see..and hell yeah to look for a rm6 pro battery is not an easy thing and not always ready on stock.
Fyi, i have some OCD symptoms which i could not see any less than a full charged battery capacity before i am going out. Is it affecting to our battery life span if it keep full charged even my battery still got more than 50%-80%?
Click to expand...
Click to collapse
Watch a tear down for it to see how bad it actually is to replace the battery. Availability will hopefully improve.
In the daytime if the battery has 70% or more of a charge on it, I don't top it off.
At night if it's at 50% or more I don't give it a partial charge until I wake up.
I can charge whenever I need to, so I take advantage of that.

blackhawk said:
That's not how batteries fail.
Something in the background is draining it.
The charge current draw can vary widely depending on charge state and temperature.
Real time charging current readings are only valid for the first second on Accubattery as once it updates with the display on that will skew the reading. You have about 1 second until Accubattery refreshes so have that window open and look fast.
The power controller won't/can't use the same charging curve with the display on... and will charge much slower. It ramps down the charger current draw to protect the battery when the screen is on. Avoid using while charging.
Click to expand...
Click to collapse
Thanks. This is good to know. Thing is. My battery drops when the phone is off (not screen off, literally phone is turned off) it drops the most after a fresh charge and if I repeat the process it drops very little. Its almost as if it thinks it's charging more than it really is and then drops quickly to the real value?? But here's the thing. It also happens when I do a complete 0-100% charge and then overcharged it until it shows negative charge current. Like the battery should be full at that point shouldn't it? Or is android thinking it's full when it's not and completely cutting current? Is this just a software issue as I suspect?

Ah
imNazreen said:
Most welcome. It is coincidence that i taking a walk in this forum and saw your post, so it is like my responsibility to respond at least as for your reference. Really glad that i can help you on that.
Refresh rate 99.9% of my usage will be 60hz to get my phone on long marathon for whole day. But i am charging the phone quite frequent as I am addicted to Asphalt9 and i have to settle down with the addiction.
Most of the time i would prefer auto-brightness but would make some adjustment depending on my surrounding. Dragging as your brightness level on your post for your comparison with mine.
Yes. I am addicted to Asphalt9 and keep playing for almost 10 hours per day. And forcing me to keep my charger set standby in my bag to be use whenever it required.
Click to expand...
Click to collapse
Ah I see. Asphalt 9 + auto brightness explains your fast drain. Still it make me worried my 9% per hour drain is too unusually high.
It baffles me that the Redmagic 5s wins the Netflix endurance test vs the 6d

Dog&Banana said:
Thanks. This is good to know. Thing is. My battery drops when the phone is off (not screen off, literally phone is turned off) it drops the most after a fresh charge and if I repeat the process it drops very little. Its almost as if it thinks it's charging more than it really is and then drops quickly to the real value?? But here's the thing. It also happens when I do a complete 0-100% charge and then overcharged it until it shows negative charge current. Like the battery should be full at that point shouldn't it? Or is android thinking it's full when it's not and completely cutting current? Is this just a software issue as I suspect?
Click to expand...
Click to collapse
That's not normal. wtf?
Lol, it has a negative attitude
No idea what's causing that but the battery percentage indicator sounds useless.
Return it if you can. May be a mobo failure in progress...

blackhawk said:
That's not normal. wtf?
Lol, it has a negative attitude
No idea what's causing that but the battery percentage indicator sounds useless.
Return it if you can. May be a mobo failure in progress...
Click to expand...
Click to collapse
I did it again this time at 63% and my battery went up to 65% while the phone was off overnight. Only to drain to 62% over the course of 20 minutes with the screen off .
And whenever I fully charge and do a voltmeter hard reset the battery always drops about 7% after the reset.
I think something is very wrong with the battery meter calibration.
Why do you think my mobo is failing?