Mastervolt Alpha Pro III 3-Step Charge Regulator

This Mastervolt Alpha Pro III is an advanced 3-step charge regulator for standard and high performance alternators. It is designed for boaters who want their propulsion engine to quickly charge service batteries, either while cruising or taking a break, ensuring fast and safe charging.

This regulator measures the temperature and voltage of your batteries to prevent overcharging, keeping them in perfect condition, while monitoring engine load to reduce sound variations, wear, and tear. The smart 'keep alive' feature solves a common problem causing unreliable tachometer readings, communicating RPM and alternator data via MasterBus. Browse more options in our power monitoring and DC-DC conversion category.

Key Features

• 3-step regulation charges more efficiently than a simple single-stage regulator.
• Temperature and voltage sensing adjust charging to actual conditions instead of a fixed profile.
• Engine load monitoring helps balance alternator output with engine demand.
• MasterBus compatible for integration with other compatible Mastervolt equipment.

Frequently Asked Questions

What does this regulator measure to prevent overcharging? Battery temperature and voltage.

What common problem does the 'keep alive' feature solve? Unreliable tachometer readings.

What data does this regulator communicate via MasterBus? RPM and alternator data.