Meet the Mastervolt ChargeMaster Plus 12/100-3 Czone — a compact, multi‑charger designed for boats, RVs, and remote power systems. It charges up to three battery banks with smart communication via MasterBus, CZone, and NMEA, simplifying wiring and helping you manage power more reliably.
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Three battery outlets: Charges up to three battery banks with a total charging current up to 100 A at 14.4 V.
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Smart communication interfaces: MasterBus, CZone, and NMEA integration for talks with displays, shunts, and power systems.
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Worldwide input tolerance: Nominal input 120/230 V AC with an 80–275 V range at 50/60 Hz, suitable for global use.
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12 V nominal output: Delivers a 12 V system with up to 100 A total charging across all banks.
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Flexible battery chemistry: Supports Gel, AGM, flooded (nat), and Lithium Ion; Battery’s Best Friend architecture learns battery chemistry and voltage for optimal 3‑step+ charging.
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Smart In-/Output path: Built‑in DC‑DC converter, current limiter, and VSR for seamless alternator integration.
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Display and diagnostics: LED display provides clear status of all three outputs at a glance.
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Compact, marine‑grade design: 15.1 x 9.8 x 5.0 inches; weight 13.0 lb; marine‑grade terminals for harsh environments.
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Safety and compliance: CE, ABYC, UL1236, SAE J1171, ISO 8846, CEC/DOE, RCM/C‑Tick approvals.
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Space‑saving power management: Replaces multiple auxiliary chargers, battery isolators, and VSRs, reducing wiring complexity and space requirements.
This charger delivers fast, safe charging for up to three banks, with a maximum of 100 A total current at 14.4 V. Its worldwide voltage tolerance and smart communication keep power systems synchronized across displays and controllers, while the Battery’s Best Friend logic optimizes charging for each battery type, extending life and reducing maintenance. By consolidating multiple chargers and isolators into a single unit, it saves space and simplifies wiring on boats and motorhomes, helping essential electronics stay powered even during demanding conditions.
| Communication & monitoring |
| Communication interfaces |
MasterBus, CZone, NMEA |
| General specifications |
| Nominal output voltage |
12v |
| Max. charge current per output |
100A |
| Smart In-/Output output voltage |
12v |
| Smart In-/Output output current |
5-40 A (adjustable) |
| Smart In-/Output input current |
max. 40 A |
| Max. AC current (230 V / 120 V) |
8.5 A / 17 A |
| Max. AC current (230 V / 120 V) |
8.5 A / 17 A |
| Total charge current |
100 A at 14.4 V |
| Number of battery outlets |
3 (max.) |
| Battery capacity range |
400-1000 Ah |
| Nominal input voltage |
120/230 V (80-275 V) 50/60 Hz |
| AC connection |
screw terminals, suitable up to up to 6 mm |
| Power supply mode |
yes |
| Display/read-out |
LED display |
| Dimensions, hxwxd |
15.1 x 9.8 x 5.0 inch |
| Weight |
13.0 lb |
| Approvals |
CE, ABYC, UL1236, SAE J1171, ISO 8846, CEC/DOE, RCM/C-Tick |
| Technical specifications |
| Charge characteristic |
UoUo, automatic / 3-traps+ voor Gel/AGM/nat/Lithium Ion + een door de gebruiker gedefinieerde optie |
| Temperature compensation |
-30 mV/°C / -17 mV/°F; temperature sensor included |
| DC voltage compensation |
through MasterShunt |
| Power consumption (DC side) |
< 2 mA (MasterBus off) |
| Current Control function |
yes, through MasterBus |
| Current Control function |
yes, through MasterBus |
| Power factor control |
> 0.98 |
| Temperature range (ambient temp.) |
-13 °F to 176 °F |
| Cooling |
vario fan |
| Protection degree |
IP23, vertical mounting |
| Protections |
over-temperature, overload, short circuit, high/low battery voltage, ignition protection |
| Charger Status Interface (alarm contact) |
yes, using a Multipurpose Contact Output (code 77030500) |
