I'm not sure exactly what's going on because I'm not a really in-depth android guru, so I will post what I do know and understand and maybe it can be resolved. I noticed today in task manager that cpu usage was hovering at 45% to 55% on avg, and spiking to 85% clear up to 98% at times. Well this had me puzzled and wondering so I started digging, and thought perhaps an app was flaking out, or maybe I needed to ditch an app of sorts. So it began I started uninstalling apps, checking task manager, no change, another app, and so on for about 10 apps I thought might be the issue, namely all the notification ones and background apps, such as widgets. I checked once again with no change so I rebooted. Same thing. So now I am at the point I am going to just reset to factory defaults with NO apps, ALL factory settings set as they are so nothing can be blamed for interfering. Now here I am, all factory reset, with zero apps installed other than the phones default ones, and have touched no settings at all throughout the system. Same shortcuts and such on the desktop, havn't changed a single thing. I have run task manager and I'm idleing at 45% - 55% cpu usage. I let the phone set for about 10-20 mins, re-check it and it hovering at 20%-30%, then finally sticks around 18%-23% area. When I checked with an app called OS Monitor, it showed that the active process that was so high usage was called "system" (not android os thats is a different process) this was before I factory reset the phone and the phone had a 45%-55% CPU usage at idle doing nothing. So I guess my questions are... -Is this normal with android the high spikes and staying so high CPU usage? -Doesn't the high CPU usage drain the battery faster? if so how much faster? -Could low battery have any effect on the CPU usage at all? My batter was between 14% and 20% when I noticed this happening this evening.