ProMariner ProIsoCharge Battery Isolator 250Amp 1-Alt 2-Bat - 12V

Enhance your marine electrical system with the ProIsoCharge250 1-3, an advanced intelligent alternator power distribution device designed specifically for boating applications. This system ensures optimal battery health by efficiently managing alternator output, allowing seamless charging of multiple battery banks while protecting your engine start batteries. Experience reliable power distribution, reduced voltage loss, and simplified installation, giving you more time to enjoy your time on the water.

Model	ProIsoCharge250 1-3
Part No.	23123
System Volts DC	12V
Max DC Amps	250 Amp
Alternator Input	1
Battery Outputs	2
Size	6.95" (L) x 5.875" (W) x 3.125" (H)
Weight	4 lbs

Smart Alternator Power Distribution

The ProIsoCharge250 delivers digitally controlled alternator output distribution, ensuring the health of your engine start batteries. Its innovative design provides intelligent, zero voltage loss isolation, enabling the charging of up to three additional battery banks from a single alternator. For dual engine setups, the system offers a unique two-alternator input model capable of managing up to four battery banks.

ProMar Digital Performance Zero Volt Loss Isolation and Charging

Featuring a fully digital design, the ProMar system actively monitors battery status and prioritizes engine battery health. It digitally distributes the full output of your engine's alternators without the typical 0.6V DC voltage loss associated with traditional diode-based isolators, ensuring maximum efficiency and faster charge times.

Intelligent Isolation and Charging Software Control

The intelligent software control of ProIsoCharge prioritizes charging to battery banks that are under load, such as house banks or power inverter banks. It automatically takes fully charged batteries offline, directing power to discharged battery banks to maintain optimal battery health and performance.

Real-Time LED Status Indicators

Stay informed with highly visible LED indicators that display alternator power presence and battery bank charging status. Fault indicators alert you to high and low alternator outputs, over-voltage protection, and high voltage conditions on any connected battery bank, including those linked to other charging sources like generator sets.

Ignition Controlled

The Distributed On Demand™ battery bank management system activates only when ignition power is on, ensuring that power distribution aligns with engine operation and conserving energy when the engine is off.

Advanced Regulator Ready

Equipped with an advanced regulator remote sense connection, the ProIsoCharge250 allows for precision alternator algorithm control, making it compatible with alternators that have advanced regulators for enhanced performance.

Easy Installation

Designed with a modular approach, the ProIsoCharge250 ensures a straightforward installation process. It comes complete with all necessary terminal stud insulator boots and a protective snap-on safety cover, saving you time and reducing installation costs.

Built-in Safety

Safety is paramount with ignition protection and an IP66 waterproof rating, ensuring reliable performance in harsh marine environments. The system is backed by a five-year warranty, providing peace of mind for your investment.

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Quick Guide (PDF)
Owner's Manual (PDF)

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.