Description
True® Large Dual Battery Kit – Power You Can Trust
Take control of your vehicle’s electrical system with the True® Large Dual Battery Kit—engineered for serious off-road, marine, and RV applications. Featuring a 140A voltage-sensitive relay, this kit automatically prioritizes charging your starter battery while powering accessories from a secondary source. No switches, no voltage drop—just smart, seamless power management.
Includes 20ft of high-flex #6 red cable, 3ft black cable, brass alloy terminals, and mounting hardware for a clean, durable install. Whether you're running winches, lights, or sound systems, this kit delivers reliable performance in the harshest conditions.
Built tough. Runs smarter. Installs fast.
Trucks & 4WDs
Powers winches, lighting, fridges, and inverters from an auxiliary battery while protecting the starter battery from drain—ideal for off-road, worksite, and overland setups.
Cars & SUVs
Supports aftermarket accessories like sound systems, dash cams, and emergency lighting without compromising engine start reliability.
Boats & Marine Vessels
Separates house and engine batteries, ensuring navigation, bilge pumps, and onboard electronics run independently and safely.
RVs & Campers
Keeps living space powered with solar, lighting, and appliances while maintaining a charged starter battery for travel.
Commercial Fleets
Enables reliable accessory use (e.g., GPS, radios, refrigeration) in delivery vans and service vehicles without risking downtime.
Emergency and Service Vehicles
Essential for maintaining the charge of batteries dedicated to life-saving or essential service equipment, ensuring reliability when the vehicle is stationary or idling.
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