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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1, The benefit of this type of relay is that it does not require a connection to the alternator or any modifications to the existing vehicle electrical system. -Fully automatic operation. -Maintains battery isolation when not charging, so starter cannot be drained by leisure use and vice-versa.
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Allows split charging of second battery bank without discharging the primary/start battery, relay makes at 13.7 volts and breaks at 12.8 volt. If Input volatge exceeds 13.3V, the circuit will be connected automatically, and the RED indicator will be ON.
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
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
Gearzaar 12V 140Amp battery isolator designed for two battery systems, allowing two separate power sources while charging with one alternator. Gearzaar Tools Camshaft Locking Timing Tool For Renault 1.8 & 2.0 16V F4P F4R.
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