RE: Battery Draining
Within the last couple of weeks I was dealing with what I thought was the
same problem.  In the process I measured the current draw (removed ground
strap and connected a multimeter between the battery and ground to measure
the current flow, make sure you are measuring current) and found my residual
draw was about 40 milliamps.  I assume that is the radio and clock, etc.  At
that rate I'd expect a good, fully charged battery to last at least through
the next Sunspot cycle :).  BTW, with the ignition on but engine not running
I was drawing about 7.5 amps.
BTW, in my case the problem was a battery that had been drawn down very low
(headlights left on  for a couple of days) and  it had not charged back up
yet even with about 40 miles of driving.  Putting a charger on the battery
overnight cured the problem.