Database Develop

Any App to monitor Battery Current ?

Checked Android market. There appears to be no app to monitor
and display the current consumption.
Most apps show power remaining in the battery in percentage format.
Not much use. Its a crude approximation. Because idle current
is a good indicator of the overall device status.
Showing the current consumption is more useful because
it shows up abnormalities if any. Some apps just kick in the
CPU into extra drive and the current consumption goes up very high
( 600 mA or more ) and the phone starts to heat up fast.
Besides heavy current drain is also harmful for the battery as well as the phone
components.
The ideal Battery current drain app should show the current consumption
( idle mode ) in mA, in real time or every 15 seconds or so, with the display
changing colors to highlight high current drain.
Normally as the battery voltage goes lower ( depending on usage time ), the
idle current drain would be higher because the internal inverter driver will draw more
current to maintain constant voltage supply to the CPU and display.
This is normal.
Whereas when the battery is fully charged , the actual idle current would be
the true indicator of the idle current of the device. Hence an elapsed time
display ( in hours, minutes ) after the battery is fully charged would be
an additional help.

DAMN
Sent from my LG-P880 using xda app-developers app

Battery Monitor Widget https://play.google.com/store/apps/details?id=ccc71.bmw&hl=pl

Hello Gentlemen!
Im new to here and welcome all..
After one week communion with my new 4xHD I have a real problem with the battery. First days it works perfect - when I didnt touch my phone, it consumes a minimum (through the night ~5-10%)... Of course when I was doing something intensive battery is sucked totally out. Then I've decided to optimize it a little, I install quandgearbox 4xhd (according to the recommendations here), then battery monitor widget... and in the first hours all was nice - flat consumption battery chart (night consumption fell to ~3%)...
and suddenly, I have no fcuking idea what I did, but I did it indeed.... battery is killed in ~6-7 hours totally... Ive checked all background processes, any suspicious apps, clicked on optimize in android assistant, restarted phone.. and I dont know what should/can I do more..
advice me something please...
Warm regards,
Daniel

ok guys, I've found the culprit... quadGearBox has some bug - even if you see "eco mode" checked - it does not ensure you that is in fact.
So the last day my 4xhd remained in quad-core mode all the time. I can verify it by antutu for example - in true "eco mode" there is about ~9500 points, in full quad-core mode I reach ~14200 score.
I've reinstalled it, restarted and all looks nice now.
Regards,
Daniel

Strange battery charge spikes ?

Hi !
I have a nook HD+ which has been behaving strangely. Its battery life has reduced lately. I initially had problems with 'media' and 'SDcard' draining it quickly. But I was able to check that by formatting my SD card and deleting two 0 kB files in my internal memory.
However, the battery life, since, has not improved much. Moreover, I have started to see a few spikes in the battery charge chart (like the one in the pictures attached with this post) without having plugged the Nook in.
I am on CM 11 snapshot M8. I have already tried calibrating my battery by charging it to 100% and then removing batterystats.bin system file through PlayStore's 'Battery calibration' app, but the issue still remains unresolved.
Has anyone else faced a similar issue with her or his Nook ?

You cannot calibrate batteries in Android. Those silly apps just delete batterystats.bin and that is an Android file responsible for the statistics seen in your third screenshot. It gets deleted automatically when you unplug the charger at an almost 100% charge level, and it has nothing to do with the reported battery level!
The battery percentage as shown by Android comes from the kernel, the power management unit (PMU) driver to be more specific. The PMU, which usually is a separate chip inside the device, is responsible for monitoring, charging, and discharging the battery, among other things. There are many different PMU models, so this is highly hardware-dependent, and there most likely are no apps out there that can directly talk to all the existing PMUs to do something that's actually meaningful (which deleting batterystats.bin is not).
The only thing you can do is once in a while discharge the battery until the device turns off, then recharge it in one go to full capacity. That way, the PMU hopefully "calibrates" its battery monitoring by itself and should report more accurate state of charge values again. Measuring a battery's state of charge is rather difficult and not an exact science. Those percentage values are only estimates. So, the spikes you see on the battery percentage chart are a result of the imperfect method that is used to calculate the current battery percentage. Maybe this gets worse with aging batteries, I don't know. There's nothing really you can do, other than the complete discharge/recharge cycle you've already tried. Maybe a future firmware will come with a better battery percentage calculation method - but as I said, this is totally independent from Android, it's a low-level hardware and kernel driver thing.

Thanks a lot. A very informative post indeed !
Full battery charge/discharge cycles seems like the only solution then.
How will it affect the battery and its capacity to retain the charge though ?

To prevent any misunderstanding: you should definitely not discharge your lithium-ion based batteries to 0% all the time. Li-ion batteries live longer if they are kept between 40% and 80% charge. At 80% you won't get the full capacity / runtime, of course, but the battery will be able to endure more charge/discharge cycles that way. As I said, discharging to 0% followed by recharing to 100% should only be done occasionally, if you feel that the reported battery percentage has become too inaccurate. It probably won't fix the "ghost recharging" seen on the Nook and other devices. What probably happens here is that the battery's voltage is factored into the state of charge calculation. Li-ion batteries are usually charged to 4.2V per cell, which is "100%", and discharged to some arbitrary voltage, e.g. 3.5V, which would be considered "0%". Inbetween, the voltage curve is not linear. That is, 50% would not necessarily correspond to 3.85V (=(4.2+3.5) / 2). Also, the voltage depends on the power draw to some extent. If the tablet draws a higher current from the battery, the voltage will sag. If you then put the tablet into standby, reducing the current to a very small value, the battery voltage will recover and increase again a bit. This is what might cause those spikes (although they shouldn't be that large).
This and more can be learned on Battery University. And here's a source for the batterystats.bin calibration myth.

Thanks a lot Tzul. You have been very helpful !!
I may have to replace my battery soon. If the battery life does not improve, I guess I will have to buy a replacement battery from a third party replacement battery seller.

Health report found within AccuBattery app

EDIT: What is your Battery health stats as seen within AccuBattery?

uhm what?

hexr45 said:
uhm what?
Click to expand...
Click to collapse
exactly :d probably he forgot to insert some screenshots

WITHIN ACCUBATTERY APPLICATION THERE IS A HEALTH TAB WHICH SHOWS YOUR BATTERY HEALTH STATS, I kept getting an error when I tried to upload an image, sorry.

battery health
mmm in accubattery it shows its 94 % but in phone info it shows its 100 % my is brand new i got it like 4 days ago it doesnt make sence that the battery capacity has decreased by 6 %

On the devices with a battery (like notebooks, tablets and phones) the OS usually increases the shown battery wear and this decreases the shown battery health. And because of that, phone thinks the maximum battery capacity is now lower than the designed (factory) battery capacity.
This means, when the designed battery capacity is 5000mAh, it shows 100% when its 5000mAh. But when it decreases to 4950mAh, its 100% at 4950 mAh. This protects the battery from charging fully. And finally, the battery lasts longer before you need to change it. So, 94%, 96% or 90% is quite normal and you do not need to worry.

y.erenbektas said:
On the devices with a battery (like notebooks, tablets and phones) the OS usually increases the shown battery wear and this decreases the shown battery health. And because of that, phone thinks the maximum battery capacity is now lower than the designed (factory) battery capacity.
This means, when the designed battery capacity is 5000mAh, it shows 100% when its 5000mAh. But when it decreases to 4950mAh, its 100% at 4950 mAh. This protects the battery from charging fully and finally, the battery last longer time before you need to change it. So, 94%, 96% or 90% is quite normal and you do not need to worry.
Click to expand...
Click to collapse
How about fast-charging the battery, in which the A70 supports. Would that be causing an issue for the health of the battery?

abdimussa93 said:
How about fast-charging the battery, in which the A70 supports. Would that be causing an issue for the health of the battery?
Click to expand...
Click to collapse
I am sure they wouldn't add this feature if it would cause any issue for the health of the battery. Even if it does hurt, it probably won't be noticeable.

Battery Display A12

This isn't an issue but a question. In A12 Google redid the battery display in settings so it ALWAYS displays the past 24 hours of usage. In prior OS's the battery would always reset on a full charge and displayed those statistics which I much preferred. My question is, would it be possible to create a mod that can modify's A12's battery display in settings so it shows battery usage based on a full charge instead of 24 hours like it once was?

@bradical711
Have you ever used Flar2's EX Kernel Manager? The battery monitor feature is great and I don't think you need to be rooted to use the monitor. I also use Accubattery which provides a lot of useful charge/discharge information on a per app basis. Lastly if you are rooted you can check out the app- battery charge limit.

Question How to check battery cycles?

Hi, is there any way to check battery cycles of my Zenfone 8?
I tried typing *#*#6485#*#* but nothing happens apart from this code disappearing from the dialer.

Grab the Accubattery app from the Play Store

Or GSam Battery

@MadDogMaddux , @M1chiel Thanks for your replies.
I installed these apps but I can't see an option to check battery cycle count since the very beginning of the phone life. Could you show me where is it located?
And the reason of this thread is that I bought used phone and I want to figure out how the previous user was using it and how much the battery is worn.

4imb0t said:
@MadDogMaddux , @M1chiel Thanks for your replies.
I installed these apps but I can't see an option to check battery cycle count since the very beginning of the phone life. Could you show me where is it located?
And the reason of this thread is that I bought used phone and I want to figure out how the previous user was using it and how much the battery is worn.
Click to expand...
Click to collapse
Gsam battery only starts collecting data from the moment it was installed.

Yup, you need to run it through a few charge cycles to verify.
AccuBattery will also help you see how much wear each of your charge cycles is putting on the battery, allowing you to significantly extend battery life through judicious charging habits (more, shorter charging cycles, rather than just leaving it plugged in overnight).
I'm attaching a screenie from my Zenfone, which I bought used in "very good" condition. As you can see, after 24 charging cycles it has measured about 12% wear on the battery. I'm a bit disappointed, but I scored a 12gb RAM/256gb HD model for less that $600US, so I'm not whining overmuch.
Anyway, you'll need to run a handful of charge cycles before the measurements will be accurate.
Anytime I buy off of Swappa, I ask the seller to run a few charge cycles after installing AccuBattery and send me a screenshot. Some do, some don't. ¯\_(ツ)_/¯