Android 2.1 or 2.2 overcharge the battery - Touch Cruise Android Development

Hi Guys
After I tested VaniljEclair_RLS7b and VaniljFroyo_RLS2 version on my Pola100, I find the battery was over charge (i.e. display showed 100% charge, but the temperature still warm).
it's temperature higher than winmo os in same device. Also winmo has parameter to set/unset charge after usb connected.
Is any charge program can fix this problem?

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Charging via PC

Hi guys,
I know if you unplug a charging phone in and out a lot it kills the battery, however my question is (as this was a big battery killer on my nokia n95) if I plug my touch pro into my pc and it has charged, will it then run purely off external power?
On my n95 it would charge, use a tiny bit of power on the battery and very shortly charge again. Obviously if my battery dipped again by a whole bar id want it to kick in the charger but that was crazy.
I'd like to leave my touch pro plugged in a lot for activesynch etc and charge at the same time so it would be nice to know if it's going to kill my battery.
I find that when the battery is charged the USB power will stop charging it. I charge overnight with my PC off on USB and come back and the full charged status is on.
Your PC should be able to provide 500mA through the port if the Touch Pro requests it, however the standalone charger is rated at 1A (1000mA) so if you are worried about using your device while charging then perhaps use it with the external charger.
I see no reason why your battery wouldnt be charged adequatly by the USB port though, generally you would be using less than your are getting from the usb port.
Scribe said:
I know if you unplug a charging phone in and out a lot it kills the battery
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erm... where did you hear that?
no it doesn't
maybe you mix it with the car ignition eating too much gas if you do it a lot?
Well, it used to be that way with the old NiCd batteries. Nowadays it's not an issue anymore.
My apologies, whilst lithium ion's don't have memory they do still lose overall power by each charge and discharge, even if it's not a complete one.
my 5 years old LOOX 720 disagrees with you
also my 5 year old HP IPAQ disagrees.
battery is as new and i charged it whenever i wanted.
same situation with my HTC Artemis, i bought it since the first day it went on sale and battery is as new!
Upquark said:
Well, it used to be that way with the old NiCd batteries. Nowadays it's not an issue anymore.
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This issue has come up so many times ..... i post again a link to a website with details on how to maximise a li-ion batterry. It clearly states that it prefers small discharges, with full discharges in every 30 charge cycles.
http://www.batteryuniversity.com/parttwo-34.htm

[Q]

I have a problem in Samsung omnia B 7610.When I plug in the charger to power source it displayed the battery is full.When I plug out the battery is low and uncharged.
it is charging normally via usb .but not able to charge via wall charger. please help
It's always possible your friend's charger was faulty, but in this case it probably has more to do with the battery getting fully discharged. Lithium Ion batteries PREFER not to be fully discharged and work their best when topped up frequently. However, unless your battery flatly refuses to charge, any strange abnormalities in battery life can probably be fixed by clearing the battery log.
please reply now .things have changed and i have updated thread now.

Problem with battery charging

Hello, I have a P3110 for at least a month, today i see that after 2 hours charging in AC Adaptor, it shows 99% and when i unplug it shows 100%...
so every time that i plug the charger it shows 99%, and when i unplug it shows the real charge. so there's some way to correct this glitch? thnk u
Also Battery duration declined from 7h to 5h...
I made some analysis on a P5110 , you may find them here http://78michel.unblog.fr/samsung-galaxy-tab-2-10-1-tests/
One important point to know about battery is that on most smartphone or tablets the 100% state of charge level is screened when the charging current get under a limit value. This limit value is set in the charge managing IC.
In your case the charging current is still at a higher level than the limit : the state of charge stay at 99%
When you disconnect the AC charger the charging current goes to 0 , the state of charge is therefore calculated from the voltage of the battery. If the voltage of your battery is close to 4.2Volt the state of charge is screened at 100%
Your problem is very frequent because the end of charge is defined by a current level, whereras the state of charge when the battery is not connected to a charger is defined by its voltage. In fact it is difficult to have a perfect agreement between both methods of evaluating the 100% state of charge

Is it safe to charge the device at low charging currents?

Hello everyone!
I recently purchased a Mi note 5 pro that comes with a 5V,2A charger out of the box.
While using it I realised the phone started warming up while charging with it- The phone reached a temperature of 42 deg C (well, the device got significantly warm).
Concerned, I tried out an old Samsung charger (5V,0.7A) with my Mi device and realised the charging temperature was much less (35 deg C) (here, the device remained cool).
Well, I wanted to know:
- Is it safe to charge the Li-ion battery at low charging currents (voltage is constant at 5V) ?
- Is it okay to use a different manufacturer's charger with my device (even if the charger is a genuine one)?
Also,
-I don't have a problem with longer charging times
-I frequently keep the device plugged in and maintain the charge between 20% and 80% (and full charge cycle once or twice a month)
-I am a heavy user but I avoid using the device while it is plugged in
-AccuBattery was the app I used for battery measurements
In the end I'm just curious to know how to prolong the battery life of my device and I'd really appreciate the help.
Thank you
1. Yes it's absolutely fine to charge at a low charging current. It is in fact better for the battery to charge it at a low current.
2. Yes, it's also absolutely fine to charge with different chargers, the quality of the charger is what is important.
willhemmens said:
1. Yes it's absolutely fine to charge at a low charging current. It is in fact better for the battery to charge it at a low current.
2. Yes, it's also absolutely fine to charge with different chargers, the quality of the charger is what is important.
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Thank you

USB charging current limiting weirdness

Hi,
We are facing what seems like a weird charge current limiting behavior of the Android (or maybe Pixel?)
We are using Pixel 3XL as a sort of an embedded kiosk.
It is connected to a Windows10 PC (Intel NUC 8th Gen Core i5) through a powered USB hub. We use ADB to control the phone and our app from the Windows PC.
Our app running on Pixel is consuming a fair amount of juice, but the Phone is still charging while our app runs ... except ...
When we just plug in the Phone, and run the app - all is well, phone charges and reaches 100% fairly quickly. Then, if we leave it running (our app is still consuming the usual amount of juice) - sometimes, after many hours of being plugged in, the phone starts discharging while plugged in. If we reboot the OS on the phone, it starts charging again (with the app running still).
Another easy repro of the weird discharge behavior: If we let the phone charge fully to 100%, then, start our app - it starts discharging rapidly. Now, if we were to charge it only to say 70%, and started out app - it would keep charging, until it reached 100% and could stay there indefinitely. And then again, if we just kill our app, let the phone sit a bit, and start the app again - it starts discharging (reaches 0!)
I should mention that it does not matter if the USB hub is powered or not - once the phone starts discharging - it does not matter how much juice is available on the hub.
Any thoughts? Do you think this an Android thing? Or a Pixel 3 bug? ... I least suspect it to be a "Windows bug", but appreciate any suggestions!
Thanks!
The phone charges more slowly as it approaches 100%, I believe. It is my understanding that you cannot achieve rapid charging with an A to C cable, only C to C. I see you said it's on a USB hub but doesn't specify if it's an A/C or C/C cable. If it's rapid charging the charge is likely enough to overcome the draw of the app/screen, but once it slows down at/near 100% it charges more slowly and can't overcome it anymore? Could also be thermal throttling or similar if the app is that intense?
fury683 said:
The phone charges more slowly as it approaches 100%, I believe. It is my understanding that you cannot achieve rapid charging with an A to C cable, only C to C. I see you said it's on a USB hub but doesn't specify if it's an A/C or C/C cable. If it's rapid charging the charge is likely enough to overcome the draw of the app/screen, but once it slows down at/near 100% it charges more slowly and can't overcome it anymore? Could also be thermal throttling or similar if the app is that intense?
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Good points. It does not appear to be related to temperature. The phone is at ~42C throughout, and happily charges. Then it reaches a 100%, and if we stop our app, then start it - it starts discharging. Only full reboot helps (our app restart does not matter). The cable is A to C, but again, even with that connection, it would charge 10-15% an hour with our app running until it reaches 100%, and the whole "throttling" thing starts, which can result in discharge to 0.

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