Control charge current

General
#1

Hello everyone!

Is there a way or an app to control maximum charge current?

I have an older powerbank. Connecting my Xperia10II to the 2A output port starts charging for a few seconds, with message popup on screen. About three seconds later the indicator on powerbank goes off and the charging stops. I think the internal overcurrent protection trips and turns off the output until replugging. So I think there is an incompatibility with signaling the capabilities.
Other Android phone charges without problem on same cable.

#2

There is certainly no GUI tool at the moment.

Depending on device there might be something like

/sys/class/power_supply/battery/constant_charge_current
/sys/class/power_supply/usb/pd_current
/sys/class/power_supply/battery/input_current_limited
and others.
I cannot tell you whether they can achieve what you want though.

BUT, be very very careful playing around in sysfs, there’s great chances of messing something up, and a messed up battery-firmware is not fun.

1 Like
#3

Battery Buddy doesn’t have this functionality yet, but it’s on the list. Maybe I’ll kick it up a few notches and get it done, now that there is a use case where it would be crucial to have.

AFAIK the current limiter acts after a delay of a few seconds, so it may or may not be enough in your case no, matter if you do it manually or programmatically. Only one way to find out :slight_smile:

2 Likes
#4

@nephros There are enough other issues. Because of your warning I will not try to mess up my device during my holidays abroad :wink:

Because the powerbank worked with XperiaX a two years ago via MicroUSB and also works with my girlfriends Xperia, running on stock Android, I think it is an software issue.
But I don’t have enough information for a bug report, so no luck for a solution this time…