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

RENOGY 40A DC TO DC BATTERY CHARGER
Nominal Voltage: 12V	Rated Charge Current: 40A
Output: 500W	Idle Power Consumption: <0.4A
Input Voltage Range: 8V-16V	Equalization Voltage: N/A
Float Voltage: 13.2-13.8v	Boost Voltage: 14.1-14.7v
Operating Temperature: -20°C to +50°C	Dimensions: 10.28 x 6.89 x 2.68 inches
Weight: 4.14lbs/1.88kg