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Authentic Arco Marine Bi-1603 Battery Isolator F/10-350a Alternators On 12, 24 Or 32v Negative Ground Systems For Home [cjtHgZzC]

$44.99 $143.99 -69%

BI-1603 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground SystemsThe Arco Marine BI-1603 is an inboard/outboard battery isolator that can handle 1 alternator, 3 batteries, and 160A max. Rated for use with 10 to 350-amp alterna

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Authentic Arco Marine Bi-1603 Battery Isolator F/10-350a Alternators On 12, 24 Or 32v Negative Ground Systems For Home [cjtHgZzC]

BI-1603 Battery Isolator for 10-350A Alternators on 12, 24 or 32V Negative Ground Systems

The Arco Marine BI-1603 is an inboard/outboard battery isolator that can handle 1 alternator, 3 batteries, and 160A max. Rated for use with 10 to 350-amp alternators on 12, 24, or 32-volt negative ground systems.

Features:


  • 1 alternator, 3 batteries, 160A max

  • Inboard and outboard battery isolators are solid-state devices that allow electrical current to flow in one direction ONLY, thus permitting the alternator to be connected directly to two batteries without fear of one higher-charged battery discharging into the lower-charged battery.

  • Both batteries are always being charged automatically, in proportion, to their needs whenever the engine is running.

  • When battery isolators are used in conjunction with selector switches, it is not necessary to change the switch position to provide for charging of both batteries.

  • Isolators provide proportioning of the output or charging current on the alternator to the batteries as required, regardless of switch position.

NOTE: Battery Isolators cannot be used on 12 volt charging systems with 24 volt trolling motors or newer outboard engines with rectifier-regulator charging systems.

What Our Customers Say

January 23, 2026

Absolutely no complaints!

A great product that is so easy to use.

- Norah Q..

January 23, 2026

Absolutely no complaints!

A really great item. I'm extremely happy.

- Sylvia C..

January 23, 2026

Absolutely no complaints!

A product that instills total confidence.

- Abigail V..

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