Posted by Matt Glass // Jun 08, 2018

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Off-Grid Engineering Dual Battery Systems: Perfect for Overlanding Vehicles


Overlanding goes hand in hand with the need for electronic accessories. Extra lighting, radio communications, navigation and fridge freezers all add to the electrical load on a vehicle’s battery system. The ultimate solution is to add another battery to the vehicle’s system, commonly referred to as a dual-battery system. This allows one battery to be reserved as the starter battery for turning over the motor, while the secondary battery becomes the ‘house’ battery for the accessory electronics.

Off-Grid Engineering out of Colorado has become the go-to specialists for vehicle-specific wiring kits and electronic control systems. They create individual solutions for the most common overlanding vehicles for the US market, covering everything from the billet aluminum battery tray to the proper gauged wiring kits, cut and sleeved to the exact length needed for each application.

Their kit includes a Blue Sea 7622 ML-ACR, which is a 500 amp smart relay that automatically links and unlinks the batteries to ensure that the starting battery is properly isolated from the draw that normally occurs while camped out of a vehicle (fridge cycling, running the stereo, charging cameras, etc). This isolator also allows for self-jump starting from the secondary battery if the starter battery has an issue.

All of this comes complete with vehicle-specific install instructions, zip ties, fuses and new battery terminals. The installation of a kit from Off-Grid Engineering only takes a few hours and is hardly noticeable after the wires are tucked and the hardware is tightened. The clean aluminum pieces will create an uncontrollable urge to routinely clean your engine bay, just so the hardware shines as brilliantly as the day you installed it. Especially if you choose to also run a compressor and wiring panel solution Powertrays, which is a sister company to Off-Grid Engineering

Matt Glass
About the Author

Matt Glass

Matt Glass joined HayterComm after spending over a decade working in the overland and off-road industry, the majority of that handling the North American marketing and PR for ARB 4x4 Accessories, the Australian 4x4 giant. Now calling the Pacific Northwest home, the Cascades serve as a substitute for the Appalachians of his childhood. During a stint in the Rockies, he tackled almost every 4x4 trail in Colorado while coordinating volunteer efforts to maintain and repair trails there. An ecologist by training, he eventually traded in deer skulls for the 4x4 industry. Adventures (and work) have taken him from Moab, to the Mojave, and across the Australian outback. Having lived the overland and 4x4 lifestyle since he had a driver's license, Matt is a true insider of the overland and power sports market.