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Stinger SGP35 500-AMP Relay and Isolator , Black
500 AMP High Current Relay/Isolator
Prevents primary battery discharge
Power on demand
Extends battery life
Universal 12 volt applications
Made of Water resistant black phenolic plastic, has a 100,000 mechanical cycle life and 500 amp contact rating. Stinger's high current relays are the most efficient and reliable way to add secondary batteries to your system. This new for 2011 item has the highest current handling capability to date. Simply connect these relays to operate when the ignition is turned on. The battery system will remain separate while the ignition is off, preventing system drain. Compatible with all types of alternators and charging systems.