Meet the Mastervolt ChargeMaster Plus 12/75-3 Czone — a compact, all‑in‑one battery charging powerhouse built for boats and mobile power systems. This intelligent multicharger combines a high‑efficiency charger, DC‑DC converter, current limiter and VSR in a single unit, reducing wiring, complexity and installation time while delivering dependable, safe charging on the go.

• Three battery outlets (max.) with a total charging current of 75 A at 14.4 V — with individual outputs able to deliver substantial current up to 75 A each.
• Charges multiple battery banks simultaneously, whether you’re using Lithium Ion, Gel or AGM chemistries, and supports large or small battery banks on a single charger.
• Wide operating range and global compatibility: 80–275 V AC input, 35–70 Hz, so it works anywhere in the world and resists voltage fluctuations and high temperatures.
• Integrated MasterBus, CZone and NMEA communication for seamless integration with displays, shunts and power systems, enabling smart monitoring and control across multiple networks.
• 3‑step+ fast and safe charging method with Safe Charge features that recognize State of Charge to extend battery life.
• Built‑in VSR eliminates extra components and ensures alternator energy is efficiently directed to the batteries; reduces system cost and complexity.
• Battery’s Best Friend architecture supports a wide range of chemistries, sizes and voltages, delivering reliable performance across diverse marine environments.
• LED display shows the charge phase of all three outputs in a clear, user‑friendly way; robust, ergonomic connections save installation time.
• Approved for marine and mobile use: CE, ABYC, UL, SAE J1171, ISO 8846, CEC and RCM/C‑Tick compliant; designed for harsh environments and wide temperature ranges.
• Operational power supply mode makes it suitable as a stable power source for delicate electronics or during boat construction.
• Compact dimensions (15.1 x 9.8 x 5.0 in) and a lightweight 13 lb design for easy installation and mounting on any vessel.

Technical specifications

• Nominal output voltage: 12 V
• Max. charge current per output: 75 A
• Total charge current: 75 A at 14.4 V
• Number of battery outlets: 3 (max.)
• Battery capacity range: 320–800 Ah
• Nominal input voltage: 120/230 V (80–275 V)
• Frequency: 50/60 Hz
• AC connection: screw terminals, suitable up to 6 mm²
• Power supply mode: yes
• Display: LED with charge phase indicators
• Dimensions (HxWxD): 15.1 x 9.8 x 5.0 inches
• Weight: 13.0 lb
• Approvals: CE, ABYC, UL1236, SAE J1171, ISO 8846, CEC, RCM/C-Tick