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Fast Delivery Arco Marine Bi-0702-4 Battery Isolator - 70a - 1 Alternator, 2 Battery [bi-0702-4] Trial Pack [CcJvTnEs]

$31.99 $102.99 -69%

ARCO Marine BI-0702-4 Battery Isolator - 70A - 1 Alternator, 2 Battery The Arco Marine BI-0702-4 Battery Isolator is a cutting-edge solution designed for marine applications, offering seamless power management for boats equipped with 1 alternator and

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Fast Delivery Arco Marine Bi-0702-4 Battery Isolator - 70a - 1 Alternator, 2 Battery [bi-0702-4] Trial Pack [CcJvTnEs]

ARCO Marine BI-0702-4 Battery Isolator - 70A - 1 Alternator, 2 Battery

The Arco Marine BI-0702-4 Battery Isolator is a cutting-edge solution designed for marine applications, offering seamless power management for boats equipped with 1 alternator and 2 batteries. This 70A isolator is engineered to handle the demands of 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems, ensuring optimal performance and reliability. The isolator features a regulator sensing terminal, providing precise control and integration with your system.

Key Features and Benefits

  • 1 Alternator, 2 Batteries, 70A Max: The BI-0702-4 is designed to support a single alternator and two batteries, maximizing charging efficiency and battery life.
  • Solid-State Design: This isolator is a solid-state device that ensures electrical current flows in one direction only, preventing the discharge of one battery into another, even when the alternator is connected directly to both batteries.
The Arco Marine BI-0702-4 Battery Isolator offers automatic, proportional charging of both batteries while the engine is running, ensuring that each battery is charged according to its needs. This feature not only extends battery life but also maintains consistent power supply for your boat's electrical systems.

Practical Uses and Applications

The BI-0702-4 Battery Isolator is ideal for a variety of marine applications, including boats with dual-battery systems, outboard motors, and inboard/outboard engines. It is designed to work seamlessly with selector switches, eliminating the need to change switch positions for charging both batteries. The isolator provides precise proportioning of the output or charging current, ensuring that both batteries receive the correct amount of charge regardless of the switch position. This isolator is a must-have for any boater looking to optimize their boat's electrical system and ensure a reliable power source at all times.

What Our Customers Say

February 5, 2026

Absolutely no complaints!

This has made a very clear improvement.

- Charles F..

February 5, 2026

Absolutely no complaints!

A magnificent find. I would highly recommend.

- Ellie E..

February 5, 2026

Absolutely no complaints!

An outstanding gadget. It is very, very powerful.

- Jakob D..

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