ChargeMaster Plus 24/20-3
Low stock
Technical specifications
Technical specifications
| Capteur de température batterie inclus | Oui |
| IP rating | IP23 |
| Wired input | Screw terminal block |
| Wired network | MasterBus, CZone, NMEA 2000 |
| Section de câble AC recommandée | 1.5 mm² |
| Plage de tension d'entrée AC | 80-275 |
| Dimensions (W x H x D) | 291 x 210 x 105 |
| Supported battery chemistries | Lead-acid (Gel, AGM, flooded), Lithium-ion |
| Bulk/absorption charge voltage | 28.5 |
| Charge algorithm | IUoUo |
| Phases de charge | 3 stages+ (Bulk, Absorption, Float, Pre-float) |
| Cooling method | Variable-speed fan |
| Max efficiency | 98.0 |
| Tension de maintien (Float) | 27.6 |
| Courant d'entrée AC maximal | 5.6 |
| Max charge current (A) | 20.0 |
| Section minimale du câble DC | 6.0 |
| Mounting type | Vertical wall mount |
| Nominal voltage | 24.0 |
| Operating temperature range | -25 to 80 °C |
| Tension de sortie | 24.0 |
| Facteur de puissance (Cos Phi) | 0.98 |
| Recommended fuse rating | 25.0 |
| Continuous power at 25°C | 480.0 |
| Continuous output power (40°C) | 570.0 |
| Galvanic isolation | Oui |
| Input voltage range | 80-275 |
| Marine-ready | Oui |
| Nominal input voltage | 240.0 |
| Nominal output voltage | 24.0 |
| Overload protection | Oui |
| Remote on/off support | Oui |
| Short-circuit protection | Oui |
| Weight | 2.5 |
| Wired output | Screw terminal block |
Detailed description
Detailed description
The MASTERVOLT ChargeMaster Plus 24/20-3 is an advanced automatic battery charger designed to provide a versatile and reliable charging solution for marine and mobile environments. Part of the ChargeMaster Plus range, this 24V/20A model features a "Battery's Best Friend" architecture, enabling simultaneous and safe charging of up to three batteries of different types and sizes, including lead-acid (gel, AGM, flooded) and lithium-ion batteries, through an intelligent 3-step+ charging process. It also includes a pre-floating function to prevent overcharging of small batteries and allows custom charge profiles to be set.
Connectivity and System Integration
This charger serves as a central component in an energy system thanks to its comprehensive communication interfaces. It is fully compatible with MasterBus, CZone, and NMEA2000 networks, enabling precise monitoring and tracking of battery charge status, voltage, and temperature. This connectivity ensures seamless integration with other Mastervolt equipment, such as the MasterShunt or system displays, for real-time adjustments and optimized performance. Unlike basic chargers, the ChargeMaster Plus 24/20-3 does not merely recharge batteries; it intelligently manages the entire energy system.
Performance and Durability
With its ability to handle input voltages from 80 to 275 V and frequencies of 50/60 Hz, the ChargeMaster Plus 24/20-3 ensures efficient charging worldwide. It provides galvanic isolation and temperature compensation (probe included) for precise and safe charging. Its standby consumption is less than 2 mA (MasterBus disabled). Designed for extreme conditions, it withstands ambient temperatures from -25 °C to 80 °C (with derating above 40 °C) and features an IP23 protection rating for vertical mounting. The vario fan cooling system ensures very low noise levels. It includes multiple protections against overheating, overcharging, short circuits, high/low battery voltages, and ignition, ensuring installation reliability. Its compact dimensions (291 x 210 x 105 mm) and weight of 2.5 kg make it lighter and easier to integrate than previous models in its category.
Expert opinion
Expert opinion
Pol CONIN
Digital Manager
« Multi-battery load management in marine environments »
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