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Home » Shop » Mastervolt Power Products » Mastervolt ChargeMaster Plus 24/40-3 Battery Charger – 44320405

Mastervolt ChargeMaster Plus 24/40-3 Battery Charger – 44320405

Original price was: $972.34.Current price is: $496.01.

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SKU: EX 44320405 Category:
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Mastervolt 44320405 – ChargeMaster Plus 24/40-3 Battery Charger (24V, 40A, 3 Outputs) – Advanced 3-Step+, Galvanically Isolated

The ChargeMaster Plus 24/40-3 combines multiple functions into a single, compact charger capable of powering demanding electrical systems in marine, mobile, and off-grid environments. It supports all modern battery chemistries and includes integrated VSR, current limiting, and galvanic isolation for maximum safety and performance. The charger communicates seamlessly with advanced electrical networks via MasterBus, CZone, and NMEA protocols.

Key Features

  • 3-output battery charger with configurable Smart In/Output
  • Delivers 40 A charging current at 28.8 V
  • Supports Lithium Ion, Gel, AGM, Flooded batteries
  • 3-step+ IUoUo charging with user-defined profile support
  • Revival Mode for deeply discharged batteries
  • Priority Charge and Smart Input functions for optimal power use
  • Galvanically isolated input/output for electrical safety
  • Automatic current distribution and pre-float protection
  • Supports global AC input: 80–275 V, 50/60 Hz

Electrical Specifications

Parameter Value
Nominal Output Voltage 24 V
Total Charge Current 40 A at 28.8 V
Smart In/Output Voltage 12 or 24 V
Smart In/Output Current 5–10 A @ 12 V; 5–20 A @ 24 V (adjustable)
Smart Input Max Current 20 A @ 24 V
Battery Outputs 3 max
Battery Bank Size 160–400 Ah
Input Voltage Range 80–275 V AC
Frequency 50/60 Hz
Max AC Current (230 V / 120 V) 6.8 A / 13.5 A
Power Factor > 0.98

Advanced Charging Technology

  • 3-step+ charging with IUoUo profile
  • Temperature compensation: -60 mV/°C (sensor included)
  • DC voltage compensation via MasterShunt or automatic
  • Can be used as a stable power supply
  • Supports custom battery profiles via configuration

Communication & Monitoring

  • Interfaces: MasterBus, CZone, NMEA
  • Displays voltage, input quality, battery temperature & charge phase
  • Status alarm contact via Multipurpose Contact Output (77030500)

Mechanical & Environmental Specifications

Parameter Value
Dimensions (H x W x D) 384 x 250 x 127 mm / 15.1 x 9.8 x 5.0 in
Weight 5.9 kg / 13.0 lb
Cooling Vario fan
Temperature Range -25 °C to +80 °C (derating 40 °C)
Protection Degree IP23 (vertical mounting only)
No-load DC Consumption <2 mA (MasterBus off)

Certifications & Protections

  • Certifications: CE, ABYC, UL1236, SAE J1171, ISO 8846, CEC/DOE, RCM/C-Tick, RMRS, RRR
  • Protections: over-temp, overload, short-circuit, ignition, high/low battery voltage

The ChargeMaster Plus 24/40-3 is the ideal solution for advanced DC systems that demand power reliability, global compatibility, and seamless integration. Built for rugged environments and sensitive equipment alike, it combines flexibility, control, and efficiency into one robust unit.