Pro Mariner 01-70-3 Alternator Battery Isolator 70 Amp 3-Bank

The Pro Mariner 01-70-3 is a 70-amp, 3-bank battery isolator designed to charge multiple batteries simultaneously from a single alternator while keeping them electrically isolated. This marine-grade isolator uses diode technology to ensure electrical current flows in one direction only—from your alternator to your batteries—preventing cross-discharge between battery banks.

Key Features:

• 70-amp maximum alternator capacity for reliable charging performance
• 3-bank design allows charging of up to three separate battery banks
• Universal voltage compatibility: operates on 6V, 12V, 24V, and 32V negative ground systems
• One-way current flow prevents batteries from discharging into each other
• Diode-based isolation technology for dependable battery management
• Ideal for marine, RV, and commercial vehicle applications with multiple battery requirements

This isolator is perfect for boats, RVs, and commercial vehicles that need to maintain separate starting and house battery banks, or multiple accessory battery systems. The Pro Mariner 01-70-3 ensures your starting battery remains charged while simultaneously charging auxiliary batteries for electronics, trolling motors, or house loads.