The Renogy DC-DC Battery Charger is designed for dual battery systems to ensure the auxiliary battery system is operating at peak efficiency for longer when you are off the grid. The DC-DC charger will safely charge the auxiliary battery bank from the started battery when the engine is running. A great addition to your RV, Boat, or any other off-grid vehicles.

Features

• Multi-Chemistry Battery Types (Flooded, Gel, AGM, and Lithium)
• Smart Protection Features (Battery Isolation, Over-voltage safety, Overheat protection, and Reverse polarity protection)
• 3-phase Charging (Bulk, Absorption, and Float)
• Built though for all conditions
• Able to charge an auxiliary battery to 100% state of charge
• Increases run time of loads, such as fridges and lights
• Overcomes voltage drop caused by long cable runs
• Prolongs Battery Life