The Mastervolt CombiMaster 12/2000 Inverter/Charger delivers clean, reliable 120 V AC power from a 12 V battery bank for marine, RV, and mobile applications. This compact, integrated unit combines inverter, charger, and transfer technology with smart monitoring and rugged protection.
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True sine wave output: 120 V with configurable 60/50 Hz to ensure smooth, stable power for electronics, appliances, and tools.
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High continuous and peak power: 2000 W continuous, 3000 W peak, and surge capability up to 4000 W for demanding loads and brief overdrives.
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Automatic transfer in 10 ms: Seamless switching between mains/generator and inverter output to prevent power dips.
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Power Assist: Helps prevent tripping when connected to weak land lines or small generators.
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Intelligent 3-step+ battery charger: Faster, safer charging across flooded, Gel/AGM, and MLI (MLI) batteries.
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Battery monitoring and temperature compensation: Automatic voltage sensing with temperature compensation for optimal charging.
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Generator compatibility and system integration: Fully integrable with MasterBus, CZone, and NMEA 2000 for broad monitoring and control.
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Rugged build and protection: IP23 enclosure with humidity-resistant conformal coating; ABYC A31, UL1236, UL1741, SAEJ1171, FCC class B safety/compliance.
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Suitable for larger battery banks: Recommended 180–500 Ah with 90–140 V input range and up to 100 A max charging current at 14.25 V.
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Efficient and compact: Up to 93% efficiency in a compact, lightweight package with heavy-duty connections for easy installation.
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Integrated communication: MasterBus, CZone, and NMEA 2000 enabled for seamless remote monitoring and control.
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All-in-one solution: Inverter, charger, and transfer technology in a single, easy-to-install unit that protects your electrical system.
With the CombiMaster 12/2000, you gain dependable power for marine, RV, and mobile setups. Its true sine output protects sensitive electronics, fast 10 ms transfer minimizes interruptions, and the intelligent charger supports multiple battery chemistries with temperature compensation to extend battery life. Network compatibility enables centralized monitoring and control, while its rugged, compliant build ensures reliable operation in demanding environments. All of this comes in a compact, integrated package designed to simplify installation and safeguard your power infrastructure.
| Specifications sine wave inverter |
| Nominal DC voltage |
12 V (10.2—16 V) |
| Output voltage |
120 V |
| Output frequency |
60/50 Hz (configurable) |
| Output waveform |
true sine |
| Continuous power at 40 °C / 104 °F, cos phi 1 |
2000 W |
| Peak power (30 sec) |
3000 W |
| Surge power (5 sec) |
4000 W |
| Max. efficiency |
93 % |
| Battery no-load power consumption |
30 W (on mode) / < 1 mA (off mode) |
| Energy saving mode consumption |
10 W |
| Synchronise with mains |
yes |
| Specifications battery charger |
| Input voltage range |
90—140 V |
| Max. input current |
17 A (adjustable) |
| Max. charge current at 40 °C / 104 °F |
100 A at 14.25 V (configurable) |
| Battery temperature sensor |
yes, included |
| Battery voltage sense |
automatic compensation |
| Specifications transfer system |
| AC input |
30 A (switched) |
| AC output |
47 A |
| AC input fuse |
yes |
| Transfer speed |
10 ms |
| Transfer voltage range |
wide: 70—140 V / narrow: 90—140V |
| Transfer frequency range |
40-65 Hz |
| General specifications |
| Galvanic isolation |
yes |
| Display/read-out |
LED display |
| Dimensions, hxwxd |
17.6 x 11.2 x 6.1 inch |
| Weight |
20.5 lb |
| Compliance |
ABYC A31, UL1236, UL1741, SAEJ1171, FCC class B |
| Technical specifications |
| Charge characteristic |
UoUo, automatic / 3-step+ for flooded, Gel/AGM and MLI, configurable |
| Recommended battery capacity |
180-500 Ah (based on gel batteries, may differ for other types) |
| Ground relay |
yes, configurable by means of mechanical jumper |
| Temperature range (ambient temp.) |
-13 °F to 140 °F |
| Cooling |
vario fan |
| Protection degree |
IP23 (vertical mounting) |
| Safety class |
IEC protection class I |
| Humidity protection |
conformal coating, max. 95 % relative humidity, non condensing |
| Protections |
over-temperature, overload, short circuit, high/low battery voltage |
| Power Assist |
yes, supports AC input with power from the battery |
| Power Sharing |
yes, allows you to select AC Input fuse setting |
| MasterBus compatible |
yes |
| CZone / NMEA 2000 compatible |
yes |
