ProMariner ProIsoCharge 120A 2-Battery Isolator

The ProMariner ProIsoCharge 120 1x2 (120 Amp, 1 Alternator, 2 Battery, 12V) delivers digitally controlled alternator output distribution while protecting the health of engine start batteries. It is designed for boaters who want intelligent, zero voltage loss isolation, charging up to 3 other battery banks off a single alternator (model specific).

For dual engine applications, ProIsoCharge offers an exclusive 2-alternator input model with up to 4 battery banks. Smart enough to provide priority charging to a battery bank under load by taking fully charged batteries offline, the all-in-one design eliminates the need for multiple voltage sensitive relays, saving space, installation time, and cost — while eliminating the typical 0.6VDC alternator voltage loss common with traditional diode-based isolators. Measures 5.35"L x 5.875"W x 3.125"H, weighing 2 lbs. Browse more options in our alternators and charging hardware category.

Key Features

• 120A
• 1 alternator input
• 2 battery outputs
• zero voltage loss
• digital control
• Model: ProIsoCharge120 1x2
• Alternator Inputs: 1
• Battery Outputs: 2

Frequently Asked Questions

What voltage loss does this isolator eliminate? The typical 0.6VDC alternator voltage loss common with diode-based isolators.

How does this isolator prioritize charging? It takes fully charged batteries offline to prioritize a bank under load.

What does the all-in-one design eliminate the need for? Multiple voltage sensitive relays, saving space, installation time, and cost.