Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S.

Dual Pro SS4 4 Bank Battery Charger w/3 Bank B.O.S.

SS4 4 Bank Battery Charger with 3 Bank B.O.S. This kit includes Dual Pro s B.O.S. (Battery Optimization System) - 12V - 3-Bank (PN: BOS12V3) and Dual Pro s Sportsman Series Battery Charger - 40A - 4-10A-Banks - 12V-48V (PN: SS4). B.O.S. (Battery Optimization System) - 12V - 3-Bank B.O.S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity. Batteries in a pack will become out of balance and the pac