Dual Battery Isolators also feature surge protection and a L.E.D indicator designed to alert the user when the unit is engaged. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery. So it does not drain your main starter battery and you will always be able to start your vehicle.
eBay
FEATURES: Made of high quality material, strong fiberglass, reinforced nylon shell. Built-in LED indication (lights up when VSR starts). Surface or panel mounting options provide flexibility in installation. Suitable for 12V 4WD, marine, truck, caravan and camping applications. Package includes： 1 x 3 Meter Split Relay Kits.
eBay
Heavy duty 200 Amp 12 volt relay Ideal for split charging systems or heavy load switching. The kit has everything that you need to install a split charging system in your vehicle including a relay that prevents your main battery from draining while the engine is stopped.
eBay
The dual battery insulator can automatically combine two batteries when charging and isolate them when no charging takes place to ensure efficient power use. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay
FEATURES: Made of high quality material, strong fiberglass, reinforced nylon shell. Built-in LED indication (lights up when VSR starts). Surface or panel mounting options provide flexibility in installation. Suitable for 12V 4WD, marine, truck, caravan and camping applications. Package includes： 1 x 3 Meter Split Relay Kits.
eBay
Automatically combines two batteries when charging and isolates the two batteries when not charging,which can widely used in 12v camper van trucks, caravans, and camping applications. When your engine is switched off, the relay will isolate your leisure battery(s) from your main starter battery.
eBay