Mastervolt ChargeMaster 12/50-3 Marine Battery Charger – 12V, 50 Amp, 3 Battery Outlets

Description

TheMastervolt ChargeMaster 12/50-3 Marine Battery Chargeris an AC-powered charger that supplies up to 50 amps of 12V DC charging output across three isolated battery-bank connections. It accepts universal 90V to 265V AC input and is specified for mid-size powerboats and sailing yachts.

The 3-Stage+ smart charging program supports AGM, gel, flooded, and Li-ion batteries. The listed absorption voltage is 14.25V, while the float maintenance voltage is 13.25V. A temperature sensor is included, and MasterBus compatibility, ignition protection, variable-speed internal fan cooling, and short-circuit, reverse-polarity, and over-temperature protection are documented.

Key Specifications of the Mastervolt ChargeMaster 12/50-3 Charger

• 50-amp output supports listed mid-size powerboat and sailing-yacht charging applications.
• Three isolated banks allow one charger to connect to up to three separate 12V battery banks.
• 12V DC output matches the listed destination battery-system voltage.
• Universal 90V to 265V AC input supports compatible AC power sources.
• AGM, gel, flooded, and Li-ion batteries are the listed compatible battery types.
• 3-Stage+ smart charging manages the listed charging sequence.
• 14.25V absorption is the listed higher-voltage charging stage.
• 13.25V float is the listed maintenance charging stage.
• MasterBus compatibility supports the listed system communication function.
• A variable-speed internal fan manages operating heat during charging.

Battery and Charging Compatibility

The Mastervolt ChargeMaster 12/50-3 is listed for AGM, gel, flooded, and Li-ion batteries in 12V systems. Its three isolated outputs allow the charger to connect to up to three separate 12V battery banks.

It is an AC-powered charger, not a DC-to-DC converter. This means it connects to compatible shore, generator, or other AC power, then charges the connected battery banks. Confirm the selected charging profile for every battery bank before use.

Installation and System Considerations

The charger accepts 90V to 265V AC input and provides up to 50 amps at 12V DC across three isolated banks. It has IP23 protection, ignition protection, MasterBus compatibility, an included temperature sensor, variable-speed internal fan cooling, and listed short-circuit, reverse-polarity, and over-temperature protection. The unit measures 11.5 in. by 8.3 in. by 5.2 in. and weighs 8.8 lbs. Installation should follow the charger manual and the electrical requirements applicable to the vessel.

Warranty and Support

Warranty information is not included in the listed product data. Review the manufacturer documentation for product details, setup, and warranty coverage.

Before Ordering the Mastervolt ChargeMaster 12/50-3 Charger

Before ordering, confirm that your system uses 12V DC battery banks, has up to three separate banks to charge, and uses AGM, gel, flooded, or Li-ion batteries. Confirm that your available AC source falls within the listed 90V to 265V range. Review the 50-amp output, 14.25V absorption, 13.25V float, IP23 rating, ignition protection, dimensions, and installation space before purchase.