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.
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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
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
1.5mm sq red cable (2m long) - To Switch relay. 10mm sq Red cable Power Feed (2m long). 1.5mm sq black cable (2m long) - Earth for relay switching. 10mm sq Black Cable (2m long) - Earth for battery. Heavy duty 200 Amp 12 volt relay Ideal for split charging systems or heavy load switching.
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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
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
10mm Sq red cable (5m long). The kit has everything that you need to install a split charging system in your vehicle including a relay (HC Cargo) that prevents your main battery from draining while the engine is stopped.
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(2) 25 amp Inline Fuse and Fuse holder. 25A fused relay with all cables and connections supplied with instructions (wiring diagram). 1) 30 Amp 12 Volt Relay. Your main battery will not be drained when the engine is not running.
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