1. Product Overview
The Mastervolt ChargeMaster Plus is an advanced battery charger designed to integrate multiple functions into a single device. It replaces auxiliary chargers, battery isolators, and Voltage Sensitive Relays (VSRs), aiming to reduce system complexity and overall cost. This versatile unit is engineered to charge various combinations of two or three batteries quickly and safely, functioning reliably across different global power standards.
Utilizing the "Battery's Best Friend" architecture, the ChargeMaster Plus supports a wide range of battery chemistries, sizes, and voltages. All connected batteries are charged using a fast and secure 3-step+ charging method, optimizing battery health and longevity.
Figure 1: Front view of the Mastervolt ChargeMaster Plus 12/75-3 Czone battery charger.
2. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your ChargeMaster Plus. It is recommended that installation be performed by a qualified professional.
2.1 Unpacking and Inspection
Carefully unpack the ChargeMaster Plus and inspect it for any signs of damage during transit. Report any damage to your supplier immediately.
2.2 Mounting Location
Select a mounting location that is:
- Dry and well-ventilated.
- Protected from direct sunlight and excessive heat.
- Accessible for wiring and maintenance.
- Secure enough to support the unit's weight (approximately 13 pounds).
2.3 Electrical Connections
Ensure all power sources are disconnected before making any electrical connections. Refer to the wiring diagram provided in the full product manual for detailed connection instructions. The unit supports 12 Volts (DC) output.
Figure 2: Rear view of the Mastervolt ChargeMaster Plus 12/75-3 Czone, highlighting connection points.
The ChargeMaster Plus is designed for global use, supporting various input frequencies (50 or 60 Hz) to accommodate different shore power systems.
3. Operating Instructions
Once properly installed and connected, the ChargeMaster Plus operates largely automatically. The 3-step+ charging method ensures optimal charging for your batteries.
3.1 Powering On
Connect the AC input power to the ChargeMaster Plus. The unit will initiate its startup sequence and begin assessing the connected batteries.
3.2 Charging Process
The 3-step+ charging method consists of:
- Bulk Phase: Charges the battery with maximum current until the voltage reaches a preset level.
- Absorption Phase: Charges the battery with constant voltage, gradually reducing current as the battery approaches full charge.
- Float Phase: Maintains the battery at a safe voltage, compensating for self-discharge and ensuring the battery remains fully charged.
- Plus Phase (Maintenance): Periodically re-activates the absorption phase to prevent sulfation and equalize cells, extending battery life.
The unit automatically detects the battery type and adjusts charging parameters accordingly. For advanced configuration, such as specific battery types or charging profiles, a MasterBus USB interface and Windows computer may be required. This interface is not included with the product.
4. Maintenance
The Mastervolt ChargeMaster Plus is designed for minimal maintenance. However, regular checks can ensure its longevity and optimal performance.
- Cleaning: Keep the unit clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure that the ventilation openings are not obstructed. Adequate airflow is essential to prevent overheating.
- Connections: Periodically check all electrical connections to ensure they are secure and free from corrosion.
- Environment: Ensure the operating environment remains within the specified temperature and humidity ranges.
5. Troubleshooting
This section provides solutions to common issues you might encounter with your ChargeMaster Plus. For more complex problems, consult a qualified technician or Mastervolt support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not turning on. | No AC input power; Blown fuse/breaker; Loose connections. | Check AC power source; Inspect fuses/breakers; Verify all connections are secure. |
| Batteries not charging. | Incorrect battery connection; Battery fault; Charger in fault mode. | Ensure correct polarity and secure connections; Test batteries; Check charger status indicators for fault codes. |
| Overheating. | Obstructed ventilation; Excessive ambient temperature; Overload. | Clear ventilation openings; Ensure adequate airflow; Reduce load if possible. |
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Mastervolt |
| Model Name | 44310755 |
| Color | Teal |
| Material | Plastic |
| Item Dimensions (LxWxH) | 15.1 x 9.8 x 5 inches |
| Item Weight | 13 Pounds |
| Output Voltage | 12 Volts (DC) |
| Certifications | CE, UL, CEC, RCM |
| First Available Date | January 16, 2020 |
7. Warranty and Support
The Mastervolt ChargeMaster Plus is covered by a manufacturer's warranty. For specific details regarding warranty terms and conditions, please refer to the warranty documentation included with your product or visit the official Mastervolt website.
For technical support, service, or inquiries about replacement parts, please contact Mastervolt customer service or an authorized service center. Contact information can typically be found on the manufacturer's website or in the product packaging.
