VSR Split charge Relay

Used to charge the leisure batteries whilst driving and when the ignition is off the relay will isolate the leisure battery cutting the circuit so you'll always have power and know your van will start the following morning after a night or two away
 
[Dual Battery Isolator] Dual battery isolator can charge both batteries at the same time and then isolate them from each other when the vehicle is turned off, ensuring that your starter battery is always charged and ready.
[Voltage Sensitive Relay] The dual battery isolator kit features 12V 140A voltage sensitive relay isolator, voltage sensitive relay will cut in preset voltage to ensure your primary battery is always charged and ready to start your car.
[Compact Size] The dual battery isolator has compact size, about 68 x 52 x 68mm/2.68 x 2.05 x 2.68 inch. A perfect fit under the hood to get close to your dual batteries. Compact size also makes it easy to put in your tool bags.
[Wide Application] Split charge relay is suitable for most 12V 4WD marine, truck, caravan, SUV ATV UTV, etc. The package includes all the parts needed for complete installation, easy to install.
[IP65 Waterproof] Car battery relay is waterproof up to IP65, which makes it can be used even in dusty, wet and unexpected extreme weather environments. The shell is made of premium ABS, anti-impact, strong and durable.