This winter rather than leaving my Jayco Eagle 5th wheel plugged in or on a maintainer as I usually do, I just disconnected the batteries. I didn't give any consideration to the BMPRO control panel (tablet). Three weeks later I found that the tablet was dead; although I could still turn on the lights, the display was blank. I plugged in the camper for 24 hours; still nothing. I removed the tablet so I could plug it into an android charge cable in the house where it was warm. Another 24 hours of charge finally brought it back. Beginning now my Jayco will be plugged in for all of our long Minnesota winters.