Something I have noticed in BetterBatteryStats, under Process, is kworker/u:0/1/2 and 3 popping up. I've done a Google on it, which frankly didn't yield much info other than that it is related to the kernel. I suppose the questions that I would like to ask are:- 1. What are the kworker processes (Dummies guide please). 2. Given that they should be there, are they over using battery or CPU? 3. Judging from the screenie, is this an acceptable level for them or do I need to take any actions (if possible)?