1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your JOSMA 48V 105Ah LiFePO4 Golf Cart Battery. Please read this manual thoroughly before using the product and retain it for future reference.
The JOSMA 48V 105Ah LiFePO4 battery is designed as a high-performance replacement for traditional lead-acid batteries in golf carts and other compatible applications. It features a built-in 200A Battery Management System (BMS), a durable stainless steel case, a touch LCD monitor, and mobile app connectivity for real-time monitoring.
2. Safety Instructions
Always follow these safety precautions to prevent injury or damage to the battery and equipment:
- Do not short-circuit the battery terminals.
- Do not expose the battery to fire or extreme heat.
- Do not immerse the battery in water.
- Use only the provided 58.4V 18A charger or a compatible LiFePO4 charger.
- Ensure proper ventilation during charging and operation.
- Wear appropriate personal protective equipment (PPE) such as gloves and eye protection during installation and maintenance.
- Keep out of reach of children.
- Do not attempt to open or modify the battery case.
3. Package Contents
Verify that all items are present upon unpacking:
- 1 × JOSMA 48V 105Ah Lithium Golf Cart Battery
- 1 × 58.4V 18A Charger
- 1 × LCD Touch Monitor
- 1 × User Manual (this document)
- Screws & Accessories (M3 Screws*8, M4 Screws*8, M5 Screws*10, M8 Screws*2, Bracket)
Figure 3.1: Contents of the JOSMA 48V 105Ah Lithium Golf Cart Battery package, showing the battery, charger, LCD display, and mounting hardware.
4. Specifications
| Feature | Description |
|---|---|
| Model | JA-48105 |
| Nominal Voltage | 51.2V (48V System) |
| Nominal Capacity | 105Ah |
| Energy Capacity | 5.376 kWh |
| Max Load Power | 10.24 kW |
| Continuous Discharge Current | 200A (Built-in BMS) |
| Cycle Life | 6000+ cycles |
| Charging Voltage | 58.4V |
| Charger Included | 58.4V 18A Charger |
| Charging Time (0-100%) | Approx. 5.8 hours |
| Operating Temperature (Charge) | 32°F to 131°F (0°C to 55°C) |
| Operating Temperature (Discharge) | -4°F to 131°F (-20°C to 55°C) |
| Low Temperature Protection | Automatic disconnect below 23°F (-5°C) for charging, below -22°F (-30°C) for discharge. |
| Case Material | High-strength cold-rolled sheet metal |
| Dimensions (L x W x H) | 19.7" x 9.6" x 12.5" (50cm x 24.4cm x 31.75cm) |
| Weight | 102.5 lbs (46.5 kg) |
| Connectivity | Bluetooth (Mobile App), Touch LCD Monitor |
| Protection Features | Overcharge, Overdischarge, Overcurrent, High Temp, Short-circuit, Voltage Balance |
Figure 4.1: Internal components and key specifications of the JOSMA LiFePO4 battery.
Figure 4.2: Overview of the Smart BMS System and its multi-protection capabilities.
5. Setup and Installation
This section outlines the steps for installing your JOSMA LiFePO4 battery. It is recommended to have basic electrical knowledge or consult a professional for installation.
5.1 Preparing for Installation
- Ensure the golf cart is turned off and the ignition key is removed.
- Disconnect the existing battery system, starting with the negative terminal.
- Remove the old lead-acid batteries. Note their configuration for reference if needed.
- Clean the battery compartment to remove any debris or corrosion.
Video 5.1: This video demonstrates the process of replacing an old lead-acid battery with the new JOSMA 48V 105Ah Lithium Golf Cart Battery, highlighting the ease of installation and the improved performance.
5.2 Battery Placement
- Carefully place the JOSMA LiFePO4 battery into the battery compartment. The battery is significantly lighter than lead-acid batteries, simplifying this step.
- Use the provided brackets and screws to secure the battery in place. This ensures stability and prevents movement during operation.
Figure 5.1: Installation of the JOSMA LiFePO4 battery into a golf cart.
5.3 Wiring Connections
- Connect the positive (+) terminal of the battery to the golf cart's positive cable.
- Connect the negative (-) terminal of the battery to the golf cart's negative cable.
- Ensure all connections are tight and secure to prevent arcing or loose connections.
- The battery features M8 terminals for robust connections.
Figure 5.2: Battery terminals and ports for connection.
5.4 LCD Monitor Installation
- Mount the LCD touch monitor in a convenient location on your golf cart using the provided bracket and screws.
- Connect the monitor cable to the designated monitor port on the battery.
Figure 5.3: LCD monitor and mobile app interface for real-time battery monitoring.
6. Operating Instructions
6.1 Initial Power-Up
- After installation, turn on the battery using the ON/OFF switch located on the battery unit.
- Verify that the LCD monitor powers on and displays battery information.
6.2 Charging the Battery
- Connect the provided 58.4V 18A charger to a standard AC outlet.
- Connect the charger's output cable to the charging port on the battery.
- The charger's indicator light will show charging status (e.g., red for charging, green for fully charged).
- A full charge from 0% to 100% typically takes approximately 5.8 hours.
- Do not leave the battery unattended for extended periods during charging.
Figure 6.1: The 58.4V 18A battery charger.
6.3 Monitoring with LCD and Mobile App
- The LCD monitor provides real-time data including battery percentage, voltage, current, capacity, and temperature.
- For advanced monitoring, download the JOSMA mobile application (available for iOS and Android).
- Enable Bluetooth on your smartphone and pair it with the battery.
- The app allows you to view detailed battery information and manage settings.
Video 6.1: This video demonstrates the features of the JOSMA 48V 105Ah Lithium Golf Cart Battery, including its robust construction, quick installation, and the functionality of the smart LCD monitor and mobile app for real-time battery monitoring.
7. Maintenance
The JOSMA LiFePO4 battery requires minimal maintenance compared to lead-acid batteries. Follow these guidelines to ensure optimal performance and longevity:
- Regular Inspection: Periodically check the battery terminals for cleanliness and tightness. Ensure there are no signs of damage to the battery case or cables.
- Cleaning: Keep the battery surface clean and dry. Use a soft, damp cloth to wipe away any dust or dirt. Do not use harsh chemicals or abrasive cleaners.
- Storage: If storing the battery for an extended period, ensure it is charged to approximately 50-70% capacity. Store in a cool, dry place away from direct sunlight and extreme temperatures.
- Temperature Management: The battery features intelligent low-temperature safeguards. For optimal performance and extended life, avoid operating or charging the battery outside the recommended temperature ranges (Charge: 32°F to 131°F; Discharge: -4°F to 131°F).
8. Troubleshooting
This section addresses common issues you might encounter. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not powering on. | Battery ON/OFF switch is off. Low battery charge. Loose connections. | Ensure the ON/OFF switch is in the 'ON' position. Charge the battery. Check all wiring connections for tightness. |
| Charger not indicating charging. | Charger not plugged in. Faulty charger. Battery already full. | Verify charger is plugged into AC outlet. Check charger for damage. Confirm battery is not already at 100% via LCD or app. |
| Golf cart not moving or reduced power. | Low battery charge. BMS protection activated. Loose battery terminals. | Charge the battery fully. Check LCD/app for BMS error codes. Inspect and tighten battery connections. |
| LCD monitor not displaying. | Loose monitor cable. Monitor power issue. | Ensure monitor cable is securely connected to the battery. Check battery power. |
| Mobile app not connecting via Bluetooth. | Bluetooth off on phone. Battery not discoverable. App issue. | Ensure Bluetooth is enabled on your device. Restart the battery and app. Try pairing again. |
9. Warranty and Support
JOSMA provides a comprehensive 10-year after-sales service for this 48V 105Ah Lithium Golf Cart Battery, which includes repairs and replacements. Our US-based warehouse ensures fast and efficient issue resolution.
For any questions, technical assistance, or warranty claims, please contact JOSMA customer support. We aim to respond within 24 hours and provide effective solutions.
Contact Information: Refer to the product packaging or the official JOSMA website for the most current contact details.
