A voltage sensitive relay (VSR) is the best way to ensure you can always get your dual-battery vehicle started. If the radio stops working that’s one thing, but if you’re stranded because your car cannot start because you ran your fridge for too long, that’s potentially a life and death scenario. It allows two batteries to be charged from your alternator. Once your main starter battery is sufficiently charged, it will begin charging the second battery too. Fully automatic with emergency override.

Features:
- Protects your starter battery
- Automatic operation
- Ideal for 4WD, marine, and more

Specifications:
Current Rating: 125A
Voltage Rating: 12VDC (15VDC Max)
Cut-In Voltage: 13.7VDC
Cut-Out Voltage: 12.8VDC
SKU AM-MB3687
Model # MB3687
Barcode # 9319236714614

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