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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1x VSR with fitting screws. 【Delay Setting Function】 —— The new delay function avoids frequent switching on and off of the isolator due to unstable current, which prolongs the isolator and battery life.
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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
Simply connect the relay between your starter battery and leisure battery and the relay takes care of everything, making sure your starter battery is not drained for when you need to get going again.
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The switch can be turned off under special circumstances to prevent the isolator from working(such as battery is over heating. etc). 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.
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1x VSR with fitting hardwares. For 12V Leisure Battery Capacity up to 220AH. Designed for dual battery systems. Simple to install (no need to modify factory-fitted electrical system - no warranty issues).
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