Meet the ProMariner ProIsoCharge120 Zero Volt Loss Isolator, a digital, marine-grade battery management system designed to protect your engine start battery while intelligently distributing the full output of your alternator to multiple battery banks. Built for reliability on the water, it delivers true zero volt loss, faster charging, and smarter power flow so you can spend more time enjoying your boat.
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System Voltage: 12v DC
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Alternator Input: 1
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Battery Output: 2
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Dimensions: 5.35" (L) x 5.875" (W) x 3.125" (H)
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Max DC Amps: 120
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Zero Volt Loss Isolation: Eliminates voltage drop typical of diode-based isolators to deliver faster, more complete charging to each bank.
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Intelligent, Priority Charging: Automatically directs current to the bank under load (house or inverter) while preserving engine start battery health.
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Ignition Controlled On Demand: Activates only with ignition power for safe, automatic battery management on the water.
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Real-Time LED Status Indicators: Show alternator power, charging status, and fault conditions (high/low output, over-voltage, or high voltage on any bank).
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Remote Sense Compatibility: Advanced regulator remote sense connection enables precision control for alternators with an advanced regulator.
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Easy Installation & Modular Design: Modular construction with included hardware—terminal studs, insulators, boots, and a protective snap-on safety cover.
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Marine-Grade Durability: IP66-rated construction protects electronics from water, dust, and spray.
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Bank Configuration: Isolates and charges up to 3 independent banks from a single alternator (model specific). Dual-engine setups with 2 alternator inputs can manage up to 4 banks.
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Space Saving & Wiring Efficiency: Replaces bulky diode isolators and voltage-sensitive relays/solenoids, simplifying wiring and installation.
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System Compatibility: Pairs with ProNauticPSeries shore power solutions for round-the-clock charging on and off the water.
By digitally distributing the engine’s alternator output while safeguarding the health of engine batteries, ProMariner ProIsoCharge120 enables multi-bank charging, preserves cranking power, and reduces wiring complexity. It supports simultaneous charging of multiple banks, prioritizes the bank under load, and helps maintain readiness for instant cranking—whether you’re on the water or docked at shore power.
| System Voltage |
12vDC |
| Alternator Input |
1 |
| Battery output |
2 |
| Dimensions |
5.35"(l) x 5.875"(w) x 3.125"(h) |
| Max DC Amps |
120 |
