hey check out this gizmo! i believe it will work on anything plugged into it not just a cooler.if the power in the battery drops below 10.7amp it shuts down the draw. i found it wile looking for replacement parts for my koolmate. they also have a upgrade kit listed for the motor!


http://www.skingco.com/pc-137-5-rpsc-810-road-pro-12-volt-battery-guard.aspx