2011 Shelby electrical problem

[upnorthguy]

I bought a 2011 with the electronics package the car has 900 miles on it. I have it in storage in a 50 degree garage and start it up every 30 days. The battery keeps getting drained and have charge it. Is this normal or do I have
a problem.

 

[IA Shelby]

Try a battery tender so that it doesn't drain the battery. Deltran jr makes a good one$40