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.

Key Features

  • Easy retrofit into Hardkorr battery boxes 
  • Fully automatic opperation
  • Inbuilt surge protection

Specifactions

Voltage

12V DC

Current rating

50A

Cut-in voltage

13.2V

Cut-out voltage

12.8V

Standby draw

10mA

Delay

15 sec

Terminal type

M6

Weight

0.2kg

Pack Contents

1 x 50A Voltage Sensitive Relay
1 x Cable with Ring Terminal Ends
2 x Terminal Covers
2 x Mounting Screws
2yr Warranty
SKU HKPBATTVSR
Brand HARDKORR
Shipping Weight 1.0000kg
Shipping Width 0.100m
Shipping Height 0.100m
Shipping Length 0.100m
Shipping Cubic 0.001000000m3
Unit Of Measure ea