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What's DOS?
Posts: 2
Registered: ‎09-18-2014
Views: 532
Message 1 of 2

usb kernel wakelock

I used to get 30 hours per charge but over the last few months I'm down to 8-10 hours.  I bought several new batteries from several sources with no improvement.  Turned off all running services, apps, syncing, backups, etc. with no improvement.  Finally through the use of some apps I discovered most of my battery drainage is coming from "Android OS" and more specifically a kernel wakelock simply referenced as "usb".  And yes I have thoroughly cleaned my usb port.


Any ideas what is causing this and how to fix it?

Moto Sr Moderator
Moto Sr Moderator
Posts: 2,012
Registered: ‎12-04-2009
Location: United States
Views: 532
Message 2 of 2

Re: usb kernel wakelock

WVFreebyrd, do you power cycle (turn Off then On) daily? Sometimes third party Apps do not close properly and mess with battery life.