Mastervolt ChargeMaster Plus 12/100-3 Battery Charger - 44311000

SKU: EX 44311000

1-2 weeks delivery time

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The Mastervolt ChargeMaster Plus 12/100-3 (44311000) is a next-gen 12 V multicharger delivering 100 A total charging power across three outputs, with integrated Smart Input (DC-DC converter), VSR, and full MasterBus compatibility. Ideal for advanced marine, mobile, and off-grid systems with AGM, Lithium, or Gel batteries from 400–1000 Ah. Operates globally on 80–275 V AC input and in temperatures up to 80 °C.

Description
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Mastervolt 44311000 – ChargeMaster Plus 12 V/100 A Battery Charger (Smart In/Out, VSR, MasterBus, 3 Outputs)

The ChargeMaster Plus 12/100-3 is Mastervolt’s most powerful 12 V smart charger, integrating a primary 100 A output with Smart In-/Output and VSR logic, all in one compact and rugged unit. Designed to simplify complex systems and charge any battery type safely and efficiently, the ChargeMaster Plus also serves as a DC-DC converter and communication hub via MasterBus or NMEA/CANopen systems. This charger is the ultimate plug-and-play solution for large Lithium, Gel, or AGM-based systems.

Key Features

All-in-one multicharger: main output, Smart I/O, DC-DC converter, VSR
Battery’s Best Friend algorithm: fast 3-step+ charging for all chemistries
Smart Input: charge from one alternator for all banks (5–40 A adjustable)
Revival Mode: safely revives deeply discharged batteries
Priority Charge: smart logic directs power to the most depleted battery
Global input voltage: 80–275 V AC, 50/60 Hz with auto-ranging
Fully MasterBus compatible: works with Mastervolt, CZone®, NMEA, CANopen
Safe for electronics: ignition-safe, IP23-rated, over-temp and short-circuit protected
Supports loads even without batteries connected

General Specifications

Specification	Value
Product Code	44311000
Nominal Output Voltage	12 V
Total Output Current	100 A at 14.4 V
Primary Output Current	100 A
Smart In-/Output Voltage	12 V
Smart In-/Output Current	5–40 A (adjustable)
AC Input Voltage Range	80–275 V AC, 50/60 Hz
AC Input Current (230 V / 120 V)	8.5 A / 17 A
Battery Bank Size	400–1000 Ah
Display	LED read-out with status indicators
Mounting	Vertical mounting, IP23 rated
Dimensions (HxWxD)	384 × 250 × 127 mm
Weight	5.9 kg (13.0 lb)
AC Terminals	Screw terminals (up to 6 mm²)
Certifications	CE, ABYC, UL1236, SAE J1171, ISO 8846, RCM, CEC/DOE

Technical Specifications

Parameter	Value
Charge Algorithm	IUoUo / 3-step+ (Gel, AGM, Lithium, Spiral, Traction)
Temperature Compensation	–30 mV/°C; sensor included
DC Voltage Compensation	via MasterShunt
DC Power Supply Mode	Yes (even without batteries)
Power Factor	> 0.98
Cooling	Vario fan (silent, temperature-controlled)
Ambient Operating Temp	–25 °C to +80 °C (derating outside 0–40 °C)
Standby Consumption	< 2 mA (MasterBus off)
Protection	Over-temp, overload, short circuit, ignition-safe
MasterBus Compatible	Yes
Alarm Contact	Yes (via Multipurpose Output – code 77030500)