Dual Pro SS4 Auto 4 Bank Battery Charger w/3 Bank B.O.S. [SS4AUTO/BOS12V3] Boat Outfitting | Gauge Accessories Approved and meets ISO 8846

Approved and meets ISO 8846 marine standards

Fast 40'/min retrieval speed

3" Full Flow Ball Valve

The ignition (gray cap) version functions in applications where the circuit is normally closed (complete) with lanyard clip in place on switch

Dual Pro SS4 Auto 4 Bank Battery Charger w/3 Bank B.O.S. [SS4AUTO/BOS12V3] Boat Outfitting | Gauge Accessories Approved and meets ISO 8846SS4 Auto 4 Bank Battery Charger with 3 Bank B. O. S. This kit combines Dual Pros B. O. S. Battery Optimization System 12V 3 Bank (PN: BOS12V3) and Dual Pros SS4 Auto 40A 4 Bank Lithium AGM Battery Charger (PN: SS4AUTO). 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 pack is