ProMariner ProIso Charge 250 0 Voltage Loss Isolator 12v 1 Alternator 2 Batteries

Protect your boat’s starting power while maximizing charging efficiency with the ProMariner ProIsoCharge250 Zero Volt Loss Isolator. Built for 12V boats, it safeguards the engine-start battery and ensures full alternator output to your other battery banks when you need it.

• Model: 23123
• System configuration: 12V DC system
• System Voltage: 12vDC
• Alternator Input: 1
• Battery Output: 2
• Max DC Amps: 250
• Multi-bank charging: Isolates and charges up to 3 independent battery banks from a single alternator (model-specific)
• Zero volt loss design: Diode-free architecture eliminates traditional diode isolators and relays for true zero volt loss and faster charge times
• Voltage efficiency: Reduces typical alternator voltage loss by up to 0.6 VDC across banks
• Intelligent battery management: Prioritizes engine start battery health, isolates fully charged banks, and directs discharge/charge where needed most while under load
• Real-time indicators: LED status indicators provide at-a-glance signals for alternator power, battery charging, and fault conditions
• Ignition Controlled On Demand: Activates only when ignition power is on to prevent parasitic drain when the boat is off
• Remote sense ready: Advanced regulator ready remote sense connection enables precise control for compatible alternators
• Easy installation: Modular design with included terminal stud insulator boots and a snap-on safety cover for quick setup
• Rugged, marine-grade: IP66-rated protection against water and debris for demanding marine environments
• Shore power compatibility: When paired with ProNauticPSeries, supports full shore power and on-the-water charging
• Dimensions: 6.95" (L) x 5.875" (W) x 3.125" (H)

With ProIsoCharge250, you gain reliable starting power and optimized capacity across your battery banks. The system prioritizes critical start batteries, keeps banks charged where they’re needed, and delivers faster, lossless charging by removing diode-based bottlenecks, all wrapped in a rugged, marine-ready package with at-a-glance LED feedback for easy monitoring on the dock or the water.