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Mastervolt Mass 24/50-2 – 24 V, 50A, 2 Bank Marine Battery Charger – 40020506
Delivering 50A across two isolated 24V banks, the 4.6 kg Mastervolt Mass 24/50-2 onboard marine battery charger provides professional cruising yachts with dependable multi-chemistry charging from 180-265V AC dockside shore power supplies.
- Dual isolated banks share 50A.
- High efficiency rating exceeds 90 percent.
- Included sensor adjusts voltage for temperature.
- MasterBus ready allows seamless system integration.
- Protective metal chassis weighs 4.6 kg.
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Description
Two isolated 24V banks allow theMastervolt Mass 24/50-2 Marine Battery Chargerto provide 50 amps for cruising yachts and professional marine systems. Its 180V to 265V AC input supports the listed 24V DC charging role, while LiFePO4, AGM, gel, and flooded battery types are supported through 3-Stage+ smart charging.
MasterBus compatibility supports the listed system interface, and the included sensor enables temperature compensation. The charger lists 28.5V absorption, 26.5V float, over 90 percent efficiency, IP23 protection, full DC and AC electronic protection, and integrated fan cooling. It is not ignition protected.
Key Specifications of the Mastervolt Mass 24/50-2 Marine Battery Charger
- Fifty-amp output supports listed two-bank 24V charging applications.
- Two isolated banks separate charging across connected 24V battery systems.
- Input from 180V to 265V supports compatible AC power sources.
- LiFePO4 and lead-acid profiles cover the listed battery chemistries.
- Three-Stage+ smart charging manages the listed charge sequence.
- Listed 28.5V absorption supports the programmed charge profile.
- The 26.5V float value supports the listed maintenance stage.
- MasterBus compatibility supports connected system communication.
- The included sensor enables the listed temperature-compensation function.
- Integrated fan cooling manages charger heat during operation.
Battery and Charging Compatibility
The Mastervolt Mass 24/50-2 supports listed LiFePO4, AGM, gel, and flooded battery types. Its two isolated outputs provide 24V DC charging across two connected banks for the listed cruising-yacht and professional-marine applications.
This dual bank battery charger uses 28.5V absorption and 26.5V float values. Confirm the selected 24V profile matches the battery manufacturer documentation for both connected banks.
Installation and System Considerations
The charger accepts 180V to 265V AC and provides 24V DC output across two isolated banks. It has IP23 protection, MasterBus compatibility, an included temperature sensor, integrated fan cooling, and full DC and AC electronic protection. The unit is non-ignition-protected, measures 13.4 in. by 10.3 in. by 5.1 in., and weighs 10.1 lbs. Installation should follow the charger manual and the electrical requirements applicable to the vessel.
Warranty and Support
Warranty information is not included in the listed product data. Review the manufacturer documentation for product details, setup, and warranty coverage.
Before Ordering the Mastervolt Mass 24/50-2 Marine Battery Charger
Before ordering, confirm that your system uses two 24V banks, accepts 180V to 265V AC input, and needs up to 50 amps. Review the listed chemistry profiles, MasterBus needs, IP23 protection, non-ignition-protected configuration, temperature sensor, and installation space. You should confirm compatibility with your battery manufacturer and vessel electrical system before purchase.
Mastervolt Mass 24/50-2 Charger
| Brand | Mastervolt |
| SKU | 40020506 |
| Output Current | 50 Amps |
| Isolated Banks | 2 Banks |
| DC Voltage | 24V DC |
| Input Voltage | 180-265V AC (Universal AC opt.) |
| Battery Types | LiFePO4, AGM, Gel, Flooded |
| Algorithm | 3-Stage+ Smart Charging |
| Absorption/Float | 28.5V / 26.5V |
| Efficiency | >90% |
| IP Rating | IP23 |
| Ignition Protected | No |
| Communication | MasterBus Compatible |
| Temp Compensation | Sensor Included |
| Safety Protections | Full DC/AC Electronic Protection |
| Cooling | Integrated Cooling Fan |
| Dimensions | 340 x 261 x 130 mm (13.4x10.3x5.1") |
| Weight | 4.6 kg (10.1 lbs) |
| Certifications | CE, ABYC, Marine Grade |
| Application | Cruising Yachts, Professional Marine |
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