Features: 1.Supports charging two batteries. When your first battery is fully charged, the isolator kit will automatically start charging the second (auxiliary) battery. 2.Designed with cutting edge programming to deliver optimum performance. When the voltage of the start battery drops the isolator disengages from charging the auxillary battery to isolates the start battery and eliminates the possibility of draining it, ensuring that you always have enough charge to start your engine. 3.Able to withstand extreme weather environments and is also water resistant. It is safe for use even for your vehicled needs in dusty, wet and unexpected extreme weather environments. 4.This compact battery isolator has the ultra?small design to fit almost every condition. Is a perfect fit under the hood to get close to your dual batteries. Suitable for UTV, 12VDC Marine, 4wd, caravan and solar applications. 5.The 140 Amp dual battery smart isolator comes with mounting plate and hardware. Does not include installation wires. Convenient for operation and installation use. Specification: Condition: 100% Brand New_x000D_ Item Type: Battery Isolator_x000D_ _x000D_ Material: Plastic_x000D_ Color: Black_x000D_ Type: Battery Smart Isolator_x000D_ _x000D_ Nominal Voltage: DC 12V_x000D_ _x000D_ Intermittent Current Rating: 140A_x000D_ Fitment:_x000D_ Fit for ATV, UTV, Boats, RV's_x000D_ _x000D_ Fit for Campers 5th Wheels Off Road Vehicles for Rhino for Polaris Artic Car_x000D_ _x000D_ Combine / Open Voltage: DC 13.3V / 12.8_x000D_ _x000D_ Manufacturer Part Number: B0401-00101 PackageList: 1 x_x000D_ _x000D_ Battery Isolator 1 x Rear Plate 1 x Bag of Screw 1 x Manual Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!