Mastervolt ChargeMaster Plus 35A 12v Output 120/230V Input C-Zone MasterBus NMEA

The Mastervolt ChargeMaster Plus 35A 12V Battery Charger is a compact, high-performance charging solution for marine and mobile power systems. It powers two or three battery banks quickly and safely, whether used as a standalone unit or integrated into a MasterBus/CZone network.

• Nominal output voltage: 12 V (outputs 1 & 2)
• Max. output current: 35 A (primary output)
• Total charge current: 35 A at 14,25 V
• Max. AC current: 2.5 A (230 V) / 5.0 A (120 V)
• Number of battery outlets: 3 (max.)
• Battery bank size: 140–350 Ah
• Nominal input voltage: 120/230 V (80–275 V) 50/60 Hz
• Power supply mode: Yes
• Galvanic isolation: Yes
• Display/read-out: LED display
• Dimensions: 11.5 x 8.3 x 4.1 inches
• Weight: 5.5 lb
• Compliance: CE, CEC, DOE, ABYC, UL1236, cULus, SAE J1171, ISO 8846, ACMA
• Communication interfaces: MasterBus, CZone, NMEA2000
• Charge characteristic: IUoUo, automatic / 3-step+ for Gel/AGM/flooded/Lithium Ion + user defined option
• Temperature compensation: -30 mV/°C / -17 mV/°F; temperature sensor included
• DC voltage compensation: Yes, via automatic compensation or MasterShunt
• Power consumption (DC side): Yes, through MasterBus or Czone
• Current Control function: Yes, through MasterBus
• Power factor control: > 0.98
• Operational versatility: Stand-alone charger or part of a MasterBus/CZone network with automated control and real-time monitoring
• Current distribution: Automatic distribution of charging current across three outputs to maximize charging on every bank
• Protection: Smart pre-float protection to prevent overcharging smaller batteries while keeping larger banks topped up
• Chemistry support: 3-step+ charging for Gel, AGM, flooded, and Lithium Ion chemistries with a dedicated Li-ion profile; Li-ion ready
• Li-ion ecosystem readiness: Compatible with Mastervolt Li-ion batteries, MasterShunt, or system displays for live adjustments
• Global usability: Worldwide compatibility with 120/230 V mains at 50/60 Hz
• Rugged design: Compact, lightweight build with broad certification for marine and mobile environments

The ChargeMaster Plus can operate as a stand-alone charger or as part of a MasterBus/CZone system for automated control and real-time monitoring. Its automatic current distribution allocates charging current based on battery condition to maximize charging on every bank, while smart pre-float protection prevents overcharging smaller batteries and keeps larger banks topped up. With 3-step+ charging and Li-ion readiness, it supports virtually any battery chemistry and is designed for reliable operation in demanding marine and mobile settings.