Mastervolt Mass 24/50-2
Mastervolt Mass 24/50-2 – Professional 24V Battery Charger
The Mastervolt Mass 24/50-2 battery charger is designed for professional, semi-professional, and recreational applications that demand maximum reliability, even under extreme environmental conditions. With its robust construction and advanced technology, it ensures continuous and safe power for large battery banks.
Key Features
- Engineered to operate in harsh environmental conditions.
- Lightweight housing in anodized aluminum and stainless steel.
- Protective coating against humidity and condensation for longer lifespan.
- Shielded from electromagnetic interference caused by other equipment.
- Compatible with all battery types, including fully discharged batteries.
- Delivered with standard battery temperature sensor.
- Delivers full power up to 40 °C ambient temperature.
- Supports battery banks from 80 up to over 2000 Ah.
- Stable output even without batteries connected.
- Current Control function prevents fuse blowouts under limited power supply.
- Parallel connection of multiple units possible.
- Certified according to CE, ABYC A-31 and IEC60945 standards.
- Available in GMDSS versions with RRR and RMRS certification.
GMDSS Compatibility
All chargers of the Mass series, including the Mass 24/50-2, are compatible with the GMDSS (Global Maritime Distress and Safety System), complying with SOLAS requirements. A dedicated remote control panel with front display is available.
Lithium Battery Charging
The Mastervolt Mass 24/50-2 supports Lithium-Ion battery charging, communicating directly via MasterBus or by adjusting to the required charging voltages.
MasterBus Integration
Easily connected to the MasterBus network with a single cable, the charger enables centralized, local, or remote monitoring and configuration.
Robust Design
The certified Mastervolt Mass 24/50-2 charger is highly durable, vibration-resistant, and designed to withstand the toughest operating conditions.
General Specifications
| Nominal output voltage | 24 V |
| Total charge current | 50 A at 28.5 V |
| Number of battery outputs | 2 |
| Charge current 2nd output | 3 A |
| Battery capacity range | 100 – 500 Ah |
| Nominal input voltage | 230 V (180-265 V), 50/60 Hz |
| Power supply function | Yes (also without battery) |
| Galvanic isolation | Yes |
| Display | LED |
| Dimensions (HxWxD) | 340 x 261 x 130 mm |
| Weight | 4.6 kg |
| Certifications | CE, ABYC A-31, RRR, RMRS |
Technical Specifications
| Charging curve | IUoUo, automatic 3-stage+ (Gel, AGM, Wet, Lithium) |
| Bulk voltage | 28.5 V |
| Absorption voltage | 28.5 V (4 hours) |
| Float voltage (Wet) | 26.5 V |
| Float voltage (Gel/AGM) | 27.6 V |
| Temperature sensor | Yes (included) |
| DC voltage compensation | Yes |
| DC side consumption | < 1 mA |
| Full load power consumption | 1600 W |
| Current Control function | Yes (via MasterBus) |
| Power factor | > 0.95 |
| Operating temperature | -25 °C to +80 °C (derating > 40 °C) |
| Cooling | Variable speed fan |
| Protections | Overtemperature, overload, short circuit, high/low battery voltage |
| Protection rating | IP23 |
| MasterBus compatible | Yes |