[Q] Periodic battery usage fluctuations
In the past few months, the battery on my (2012) Nexus 7 has been completely unreliable. It charges very slowly (roughly 2-5% per hour), and continues to discharge if used while plugged in. In general if left overnight it will charge to a full 100%, but last night it lost 3% from where it had been. Using Battery Monitor, I saw a recurring pattern in the current drawn by the device while plugged in. One or two times an hour, it would spike downward to between -700 and -1000 mA, before returning to a positive charging state. Looking at Battery monitor after a period of light use (chrome, pandora, facebook), the pattern remained consistent. Does anyone have any thoughts on what might cause such a periodic heavy power draw? Thanks very much!