Limitless Lithium LL-IR500A 500 Amp Battery Isolator Relay – Water Resistant

Running dual batteries or a serious car audio setup?

You need this.

The Limitless Lithium LL-IR500A is a 500 amp battery isolator relay that’s built to handle some serious current.

It’s water resistant, so it’s fine under the hood or in damp spots, and it’s designed for long life cycles—meaning it’ll keep doing its job for a long time.

Voltage is 12V, so it’s perfect for most vehicles.

Weighs just 1 pound but don’t let that fool you—this thing is tough.

Brand new, in the box, and ready to wire up.

Manufacturer part number crosses over to stuff like stinger sgp35, so you know it’s in that league.

Keep your starting battery separate from your accessory battery and never worry about being stranded with a dead battery again.