Attend XDA's Second Annual Developer Conference, XDA:DevCon 2014!
5,729,023 Members 42,215 Now Online
XDA Developers Android and Mobile Development Forum

Still having charging issues with 4.2.2

Tip us?
 
Polarfuchs
Old
#21  
Senior Member
Thanks Meter 47
Posts: 813
Join Date: Apr 2008
I unplugged and replugged the charger instead of only checking the cables of the Asus docking station.
And I ran advanced task killer, killed a bunch of apps.

After this it began to charge really quick, as I was used to it.

Now the battery is as 100%
/sys/devices/platform/tegra-i2c.4/i2c-4/4-0055/power_supply/battery/voltage_now
shows 4.179.000 ÁV

Which is the same as the app "akku&batterie hd" by smallte.ch reports.

So if I can exclude a hardware error, some software must have caused it.
But my highest usage shows "display" that caused 73% of the drain.
OnePlus One Sandstone Black 64Gb
 
bftb0
Old
#22  
Senior Member
Thanks Meter 793
Posts: 2,120
Join Date: Feb 2010
Quote:
Originally Posted by Polarfuchs View Post
I unplugged and replugged the charger instead of only checking the cables of the Asus docking station.
And I ran advanced task killer, killed a bunch of apps.

After this it began to charge really quick, as I was used to it.

Now the battery is as 100%
/sys/devices/platform/tegra-i2c.4/i2c-4/4-0055/power_supply/battery/voltage_now
shows 4.179.000 ÁV

Which is the same as the app "akku&batterie hd" by smallte.ch reports.

So if I can exclude a hardware error, some software must have caused it.
But my highest usage shows "display" that caused 73% of the drain.
Well, if you are charging the device with the screen on, it is certainly going to charge more slowly. I can drain my device in four or five hours merely doing light browsing - most of that is just the screen.

If there is something that is causing one or more of the CPU cores to be running at full bore, the battery will certainly charge even more slowly - see the prior maths that demonstrate that a 2A charger can not charge the battery at it's maximum rate (~1.7A) if a whole bunch of stuff is happening on the tablet. But just the screen alone can do that if it is on.

But you never bothered to mention what state the device was in (screen on etc).

If the device is capable of sleeping (there are no wake locks held by running apps), it will enter the LP0 state and the power drawn by the motherboard will be nearly zero. You will see LP0 mentioned in the kernel log (/proc/kmsg) if it is deep-sleeping.

I never said "software can't cause the battery charge rate to diminish". What I said was that if no software is running at all - the device is powered off - then if you do not observe a charging rate in excess of 30%/hr, the problem is hardware. The LP0 power state (tab in deep sleep, no wake locks held) also approximates a power-off condition.

cheers
 
Polarfuchs
Old
#23  
Senior Member
Thanks Meter 47
Posts: 813
Join Date: Apr 2008
It was on, but when daydream started I turned off the display.
Today it works well again.
OnePlus One Sandstone Black 64Gb
The Following User Says Thank You to Polarfuchs For This Useful Post: [ Click to Expand ]
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes