Stinger Stinger - 500-Amp Battery Relay and Isolator - Black

Isolate your secondary audio battery from your vehicle's electrical system with this Stinger 500-amp relay and isolator. High-current relays provide efficient, reliable electrical isolation and maximum current transfer to help prevent primary battery discharge. This Stinger 500-amp relay and isolator offers a mechanical cycle life of up to 100,000 uses for reliable long-term performance.