200 Amp Battery Isolator And Continuous Duty Solenoid For 12V Systems, Dual Battery Combiner Switch With Auto Isolate When Engine Off, Keeps Your Car Battery Ready For Mobile Audio And Accessories Power, Durable Automotive Grade Relay

Durable 12V Battery Isolator Solenoid For Vehicles
✔️ 200A continuous 300A surge 12V DC 2-3/8x2-3/8x3-3/4in

This handy single package heavy duty automotive relay pairs two power sources into one reliable setup. It automatically links the batteries when the alternator runs and splits the circuit once you turn the key off. You get consistent backup juice for phone chargers, GPS trackers, and home audio rigs while keeping your starter battery fully charged.

✅ Racks up 200 amps steady flow and 300 amps brief spikes
✅ Holds 12 volt direct current without dropping extra voltage
✅ Snug metal frame measures 2-3/8 inches wide by 2-3/8 deep
✅ Pulls in fast when ignition flips on and clicks off later

💡 What is a heavy duty dual battery combiner switch used for?

This handy relay solves the headache of dead aux batteries while running gear.

• Links main and secondary packs when engine turns over
• Cuts voltage path instantly when you park and leave
• Handles high draw accessories without draining your starter
• Works great for off road builds camping vans and work trucks

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