Voltage-Sensitive Relay Kit (can be used with Hardkorr Battery Box

Using a Hardkorr 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. Note: Not suitable for Lithium Batteries.

Sterling Power ProConnect - VSR - Voltage Sensitive 240 amp relay

Heavy Duty Battery Box - Hardkorr Australia

Hard Korr Heavy Duty Battery Box with VSR

removable lithium battery box

Heavy Duty Battery Box - Hardkorr Australia

Hard Korr Voltage Sensitive Relay Kit for Heavy Duty Battery Box

Hard Korr Heavy Duty Battery Box, White

Hard Korr Voltage Sensitive Relay Kit for Heavy Duty Battery Box

Hardkorr Heavy Duty Battery Box – Complete 4×4

Remote Battery Monitor with High-Precision 100V/500A Shunt

Heavy Duty Battery Box - Hardkorr Australia

Bluetooth Battery Monitor with High-Precision 500A Shunt 1 Stop Camping Shop

Bluetooth Battery Monitor with High-Precision 500A Shunt %

Mounting Tray and Straps (for Hardkorr Battery Box)

Korr Voltage-Sensitive Relay Kit for Hardkorr Battery Box