Up for sale is a genuine, commercial-grade Charles Industries Next Step Series 12-Volt Multi-Stage Smart Alternator Regulator. Unlike standard single-alternator setups, this heavy-duty "9A" series module is specifically engineered for twin-engine vessel configurations, packing dual independent regulatory charging boards inside a single marine enclosure.

The Next Step regulator optimizes your main engine alternators into sophisticated 3-stage smart chargers. It automatically controls field current output through dynamic Bulk, Absorption, and Float cycles to safely replenish high-capacity marine house battery banks (Lead-Acid, Gel, or AGM) rapidly while protecting them from overcharging, gassing, or premature cell failure.

Product Specifications:
- Manufacturer: Charles Industries / Charles Marine Products
- Product Line: C-Charger Next Step Series
- Model / Part Number: 9A-12PREG-B
- System Voltage Configuration: 12 Volts DC
- Engine Application Profile: Twin Engine Configurations (Dual internal regulator layout)
- Compatible Battery Profiles: Lead-Acid, Gel Cell, and AGM Marine Batteries
- Base Board Equivalency: Features the functionality of two 93-12PREG single-engine control units in one package
- Field Current Capacity: Handles high-amperage external alternator fields safely
- Housing Design: Ignition-protected, corrosion-resistant coated casing suited for engine spaces