Description
Optimize dual-battery systems with the Nilight 120A Starter 4 Pin Split Charge Relay, engineered for vehicles requiring independent auxiliary power management. This heavy-duty relay automatically isolates your auxiliary battery from the starter battery while the engine runs, then reconnects during charging to maximize battery longevity. The 120-amp capacity handles demanding applications including winches, lighting arrays, and auxiliary electronics without compromise. The 4-pin configuration ensures straightforward installation and reliable switching performance in off-road, marine, and expedition vehicles. Built for professionals who demand dependable power distribution and extended battery life in demanding environments.