[kevm14]

Not sure why I can't edit. I meant to add the following:

I also read somewhere that the current usage goes up as the battery drains and the thought at the time was some kind of defect. It's not. It's just the way electricity works. For a given power level, you multiply voltage by current. If the voltage drops (like because of a draining battery) the current must increase to sustain the required power output.