Beefy 500 Amp Battery Isolator Relay For Mobile Audio Systems, 12V Heavy-Duty Battery Separator That Isolates A Second Battery For Marine, Off-Road, Power Sports, RVs And Dashboard Electronics

Heavy-Duty 500A 12V Battery Isolator Relay for Dual Battery
✔️ 500A continuous at 12V; 700A surge; single unit; minimizes drop

Powerful 12V battery isolator designed to separate a second battery that powers audio, navigation, or other dashboard electronics from the primary battery. It's ideal for marine, off-road, power sports, RVs, and dashboard installations, helping prevent cross-charge and drain when systems are powered down.

✅ 500A continuous at 12V with 700A surge
✅ Reduces battery drain by isolating the second battery from the first
✅ Durable, easy to install for marine, off-road, RV and dashboard setups
✅ No voltage drop to the secondary battery during operation

💡 What is a battery isolator relay used for in dual-battery setups?

It helps keep two battery banks from charging each other and reduces drain on the primary battery.

- Handy for marine, off-road, RV and dashboard electronics - Prevents cross-charging between batteries - Supports 12V systems with up to 500A continuous / 700A surge ✝️