Using a battery box with voltage-sensitive relay (VSR) is the simplest way to create a dual battery setup in your vehicle.
The VSR acts as an isolator, allowing the auxiliary battery (inside the box) to charge directly from the crank battery while the car is running. When the ignition is switched off and battery voltage drops below 12.7V, the VSR automatically cuts the link between the auxiliary and crank batteries.
The optional wiring kit (SKU: HKPBATTWIR) makes it an easy DIY job to install your dual battery setup.
- Easy retrofit into Hardkorr battery boxes
- Fully automatic operation
- Inbuilt surge protection
The Hard Korr® Guarantee
All Hard Korr® products are manufactured using the highest quality materials. We are confident that they are the most durable in the market and will give you many years of reliable service. We stand behind this product with a comprehensive 2-year Australian warranty and a 30-day money back guarantee.
|1x||50A voltage-sensitive relay|
|1x||Cable with ring terminal ends|