Pro Mariner 02-70-3 Battery Isolator 70 Amp 2 Alternator 3 Battery

The Pro Mariner 02-70-3 is a heavy-duty battery isolator designed to manage charging across multiple battery banks in marine, RV, and commercial vehicle applications. This isolator allows one or two alternators to charge up to three separate battery banks while preventing discharge between batteries when the engine is off.

Key Features:

• Rated for 70 amps maximum alternator output
• 2 alternator inputs, 3 battery bank outputs
• Multi-voltage compatibility: operates on 6V, 12V, 24V, and 32V negative ground systems
• One-way current flow prevents battery drain and cross-discharge
• Solid-state diode design for reliable, maintenance-free operation
• Ensures critical starting battery remains charged while powering accessory loads

This battery isolator is ideal for boats, RVs, emergency vehicles, and work trucks that require independent battery banks for starting, house loads, and auxiliary equipment. The rugged construction and wide voltage range make it suitable for both recreational and commercial applications.