Develop Bugs

[Q] Battery problem

Hi guys!
I've bought Arc about month ago and I've noticed a problem with battery percentage, it has oscillations. For example, battery is on 25% and suddenly drops to 2 or 3% and for a while battery is on 18%, or battery is on 84%, suddenly drops to 74% and soon comes back on 85%. I've restarted the phone, repaired software but the problem is still here.
Battery life is very good, average life is 36-48 hours, but there is a problem with oscillation. Can anyone tell me what should I do?
Software version is 2.3.3.

Let me search that for you http://www.google.com/cse?q=Battery...sc.tab=0&gsc.q=Battery problem Arc&gsc.page=1

Hmmm... Why didn't I think of that?
My problem isn't 0% battery or short battery life. Read my post again and than answer me.

D. Sidious said:
Hmmm... Why didn't I think of that?
My problem isn't 0% battery or short battery life. Read my post again and than answer me.
Click to expand...
Click to collapse
Best way to fix it is battery calibrate....but it needs root.
And when it drops and raise 2-3% its quite normal. My Neo doing thiskind drop raise trick when I make reboot and for me its not problem
Cheers
Taavi
Sent via MT15i Nightly v13®

Bootloader locked? Rooted?

D. Sidious said:
Hi guys!
I've bought Arc about month ago and I've noticed a problem with battery percentage, it has oscillations. For example, battery is on 25% and suddenly drops to 2 or 3% and for a while battery is on 18%, or battery is on 84%, suddenly drops to 74% and soon comes back on 85%. I've restarted the phone, repaired software but the problem is still here.
Battery life is very good, average life is 36-48 hours, but there is a problem with oscillation. Can anyone tell me what should I do?
Software version is 2.3.3.
Click to expand...
Click to collapse
Hi Sidious
It sounds like your battery are fluctuating more than normal, a drop of 20% is definitely not normal unless you are doing allot of booting and flashing at the same time.
One cause of the smaller oscillations could be that battery is not read as often when in deepsleep to save battery life. It might have some battery level estimations when you wake up the phone that are off by a few % when the next battery reading occur. Might also be temperature changes that also change the capacity slightly.

@ ShyamSasi
Arc isn't rooted.
@ hygge
I'm not sure what did you mean by saying that I'm doing allot of flashing and booting at the same time?

D. Sidious said:
Hi guys!
I've bought Arc about month ago and I've noticed a problem with battery percentage, it has oscillations. For example, battery is on 25% and suddenly drops to 2 or 3% and for a while battery is on 18%, or battery is on 84%, suddenly drops to 74% and soon comes back on 85%. I've restarted the phone, repaired software but the problem is still here.
Battery life is very good, average life is 36-48 hours, but there is a problem with oscillation. Can anyone tell me what should I do?
Software version is 2.3.3.
Click to expand...
Click to collapse
Battery sensing module automatically calibrates when it discharge from 100% to 2% or lower. So, let it discharge a few times to 2%, and try to do a light use (no games, etc) doing this, to help fuel gauge module to detect internal battery impedance and correct the % marking.

D. Sidious said:
@ ShyamSasi
Arc isn't rooted.
@ hygge
I'm not sure what did you mean by saying that I'm doing allot of flashing and booting at the same time?
Click to expand...
Click to collapse
Hi Sidious
If you had the bootloader unlocked and was flashing new kernels or firmwares. I have noticed that the phone when in "fastboot" mode do not charge but consumes allot of battery, it usually shows as a sharp drop when the phone are booted up. "fastboot" can be used to flash new kernels on the phone, but I do not think this is the problem in your case when you are running the SE provided firmware only.

Batterylife

Hi!
I installed blackout ICS incredible in my DHD. Everything went well but I wanted to calibrate my battery.
So I downloaded Battery Calibration by NeMa from Google play. Before calibration my batterylife was about 12-24h depending on my use.
Now after the calibration my batterylife is about 5h!! And the same usage as I have always had, couple of calls, net surfing and maybe a little of Angry Birds and spotify.
Did I do something wrong or is my battery dead? My DHD is about 2 years old.

According to Google calibrating your battery (erasing your battery stats) doesn't actually do anything, so it shouldn't have made your battery life shorter. You could install BetterBatteryStats from a thread here on XDA to see if something else is eating your battery. Look at alarms and wakelocks.

Ok, thanks. I installed the BBS and I'll tell the alarms and wakelocks here if I don't find anything funny about them...

bananagranola is right.
- hit my thanks button if i helped you -

calibrating your battery basically tells your OS how much batter it has or doesn't have. IF you flash a rom at less than 100% battery, then the max amount of battery your OS thinks it has might be different from how much your phone actually has. Sometimes this can affect battery life.
The other thing is, did you calibrate at 100%, then unplug immediately? If not, that might trick your OS into burning your battery so quickly.
Otherwise, 12hrs to 24 hours is super amazing, I'm a semi heavy user, and I'll only be able to get 12-14 hours of semi serious use (8 hours standby, 2 hours on off usage, some of that at 100% brightness when i'm outside, and lots of music), end of that I have only 32% left. 24 is pretty amazing, I wouldn't be complaining :laugh:

Well when you simply reboot new stats are generated.
- hit my thanks button if i helped you -

Ok, so I have had today the BBS running on the background. I tried one thing in afternoon, I switched of Wifi. Wifi was off about 3h and when I came back to home I switched wifi back to on. I have still 70% battery!! and about 12h without charging.
BBS alarms:
android, wakeups:83 (Is this much?)
com.google.android.gsf, wakeups:56
com.android.settings, wakeups:13
and the rest of them is under 10
BBS Kernel Wakelock:
wlan_rx_wake: 14m18s
PowerManagerService: 10m57s
and rest is under 4mins
BBS Partial Wakelocks:
AudioOut_3: 3min16s
Twitter sync: 1m56s
BBS Other:
Deep Sleep is about 10.5h
Wifi On/running is about 6h
Is there something wrong or is there something that uses too much battery? Could the battery be "damaged" due it's about 2 years old now?
Sorry for stupid questions but I find it very annoying that sometimes battery life is 5h and sometimes it's way more than 12h with same usage.

HukkaHD said:
Ok, so I have had today the BBS running on the background. I tried one thing in afternoon, I switched of Wifi. Wifi was off about 3h and when I came back to home I switched wifi back to on. I have still 70% battery!! and about 12h without charging.
Is there something wrong or is there something that uses too much battery? Could the battery be "damaged" due it's about 2 years old now?
Sorry for stupid questions but I find it very annoying that sometimes battery life is 5h and sometimes it's way more than 12h with same usage.
Click to expand...
Click to collapse
What you've got looks fine (which makes sense, since you had good battery life this time). Keep BBS installed. If/when battery life starts tanking, take a look at BBS and see if anything else pops up. If you've got more questions then feel free to post again here.

Although you might miss the customizations of the roms, aospX has great and I mean great, battery life.
- hit my thanks button if i helped you -

Battery issues

Hi Guys! I have some battery issues with my HOX (CM10 Nightly): 1) battery drain is just like crazy, few hours and dead; 2) battery icon shows wrong battery level (one minute is 20% and next minute is 14%, I tried to calibrate it - didn't work), plus today I was playing a game on a low battery level and when I reached 0% the phone switched itself off, the very next minute I switch it back on it shows 10% batttery level and I continue to play the game. It all seems very strange for me, so if you have any ideas, please reply. Thanx

Charge to full, then go into recovery and wipe battery stats as a beginner option, after install BetterBatteryStats and monitor to see if any apps are draining your battery.
Sent from my HTC One X using Tapatalk 2

[Q] Typical idle battery drain on your 8.4?

I was curious what kind of idle battery drain people are getting on their tablets/ROMs?
Measuring with Battery monitor Widget Pro, on my 8.4, running stock TW except for Towelroot, I am averaging -150ma.

waylo said:
I was curious what kind of idle battery drain people are getting on their tablets/ROMs?
Measuring with Battery Widget Pro, on my 8.4, running stock TW except for Towelroot, I am averaging -150ma.
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Click to collapse
Since I have an amper cable I can see the current the tablet draws when its plugged in with screen off / idle and fully charged. mine does this
0-0-0-0-0-0-0-0-0-20-0-0-0-0-0-20-0-0-0-0-0-20
so I would say its draws a quick 20 ma every 10 seconds - but since its plugged in it might not be in the deepest sleep setting that it would be when on battery.
anyways I have no problems with it staying at 100% or 99% leaving it off for the whole day unplugged so it has very good power management in my opinion. - just have to keep the wakelock apps in check

I updated from the ng1 build to the latest nk1 build and my idle battery drain is much improved with the exact same setup running. Now down to -40-50 mah.

I have terrible battery drain randomly for no reason and I don't no what is causing the battery to drain so much. I have attached an image is there anyway of seeing what causes this much battery to drain so quick?

lilzad said:
I have terrible battery drain randomly for no reason and I don't no what is causing the battery to drain so much. I have attached an image is there anyway of seeing what causes this much battery to drain so quick?
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Click to collapse
You should install better battery stats, available here on XDA, to pinpoint your battery usage.
Looks like there was a really battery draining event that occurred quite suddenly?

lilzad said:
I have terrible battery drain randomly for no reason and I don't no what is causing the battery to drain so much. I have attached an image is there anyway of seeing what causes this much battery to drain so quick?
Click to expand...
Click to collapse
I noticed in the screenshot you have might GPS on, there could be an app running in the background abusing GPS or polling it too quickly (look for a blinking / solid white pointer Icon in the top left of the statusbar, this will tell you if something is requesting location).
GPS will drain battery very quickly and should be disabled unless it's needed.

A Different Kind of Battery Drain

Yes, I know these battery drain threads are getting annoying, but I can't seem to find a solution to mine...
What happens is that after charging to 100% or near it, I have a very small battery drain (like 11-14 %/h), and then if I do something a bit more demanding (games, substratum, etc) my battery drain starts to get a little worse (16-20%/h). Even if I return to my light usage after my heavier usage, the battery drain is still there...

Battery usage is calculated based on capacity used over time since last charge. It's an average, not a real time monitor.

Anova's Origin said:
Battery usage is calculated based on capacity used over time since last charge. It's an average, not a real time monitor.
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Click to collapse
I know that... Which is why I have reset the battery stats, before returning to my light usage. The thing is, the light usage drains much more battery after the heavy usage the before.