The Magnum Smart Battery Combiner (ME-SBC) is designed to monitor and charge a second battery using a portion of the current that is charging a main battery.

The ME-SBC uses MOSFETs, which is a bidirectional electronic switch, control circuit that eliminates a significant voltage drop and provides automatic turn on and off based on adjustable voltage setpoints; allowing different batteries to be charged from a single charging source and preventing over or under charging.