Mastervolt ChargeMaster 24/30-3 Battery Charger - 44020300

SKU: EX 44020300

1-2 weeks delivery time

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The Mastervolt ChargeMaster 24/30-3 (44020300) is a robust, intelligent battery charger that delivers 30 A across three fully capable 24 V outputs. Designed for global operation, it features auto-ranging AC input (90–265 V), MasterBus integration, galvanic isolation, and 3-Step+ charging technology compatible with all battery chemistries. Ideal for marine and industrial systems up to 300 Ah, the device also serves as a reliable DC power supply in the absence of batteries.

Description
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Mastervolt 44020300 – ChargeMaster 24 V/30 A Battery Charger (3 Outputs, MasterBus, Auto-Ranging, Ignition Protected)

The ChargeMaster 24/30-3 from Mastervolt provides advanced, high-efficiency charging for 24 V battery systems. Delivering 30 A total across three outputs, it features 3-Step+ charging for AGM, Gel, Wet, and Lithium Ion batteries. Global auto-ranging AC input, ignition protection, and MasterBus communication make it suitable for demanding marine, RV, and industrial use. A compact anodized aluminum design ensures long-term durability and safety even in harsh environments.

Key Features

30 A charge current at 24 V DC
Three equal-capacity charge outputs
Auto-ranging AC input: 90–265 V AC (50/60 Hz)
Compatible with all battery chemistries including Lithium Ion
Automatic IUoUo 3-Step+ charging profile for full charge cycles
MasterBus compatible for remote monitoring and configuration
DC power supply mode allows operation without batteries
Ignition protected and galvanically isolated
Rugged IP23 aluminum housing with vario fan cooling

General Specifications

Specification	Value
Product Code	44020300
Nominal Output Voltage	24 V DC
Total Charge Current	30 A
Battery Bank Size	60–300 Ah
Number of Battery Outputs	3 (all full-capacity)
Input Voltage Range	90–265 V AC, 50/60 Hz
Power Supply Mode	Yes
Display	LED indicators + 3-button control
Cooling	Vario-controlled fan
Mounting	Bracket or 4x screw (included)
Dimensions (HxWxD)	291 × 210 × 131 mm
Weight	4 kg (8.8 lb)
Protection Class	IP23
Certifications	CE, ABYC A-31, SAE J1171, ISO 8846, RMRS, RRR

Charging Profile & Technical Details

Parameter	Value
Charge Characteristic	IUoUo 3-Step+ (automatic)
Charge Voltage Bulk	28.8 V
Charge Voltage Absorption	28.5 V
Absorption Time	4 hours
Float Voltage (Wet)	26.5 V
Float Voltage (AGM/Gel)	27.6 V
Temperature Compensation	Yes
DC Voltage Compensation	Automatic
Standby Power Draw	< 2.5 mA
Full Load Power Consumption	925 W
Power Factor	≥ 0.98
Current Control	Yes (via MasterBus)
Operating Temp. Range	–25 °C to +60 °C (derating below 0 °C and above 40 °C)
Protection Features	Overload, Overtemp, Short Circuit, High/Low Voltage