1. Introducció
This manual provides essential information for the safe and efficient use of your JOSMA 48V 150Ah LiFePO4 Golf Cart Battery. This lithium iron phosphate battery is designed as a high-performance replacement for traditional lead-acid batteries, offering increased power, longer lifespan, and advanced monitoring capabilities. Please read this manual thoroughly before installation and operation.


2. Informació de seguretat
Observeu sempre les precaucions de seguretat següents per evitar lesions o danys a la bateria i als equips connectats:
- No desmunteu, perforeu ni modifiqueu la bateria.
- Avoid exposing the battery to fire, extreme heat, or direct sunlight for prolonged periods.
- No submergiu la bateria en aigua o altres líquids.
- Utilitzeu només el carregador de 58.4V 18A proporcionat per carregar.
- Assegureu-vos una ventilació adequada durant la càrrega i el funcionament.
- Mantenir fora de l'abast dels nens.
- Wear appropriate personal protective equipment (PPE) such as gloves and eye protection during installation and handling.
- Ensure all connections are secure and correctly polarized (positive to positive, negative to negative).
3. Contingut del paquet
Verifiqueu que tots els elements siguin presents al paquet:
- 1 × JOSMA 48V 150Ah Lithium Golf Cart Battery
- 1 × 58.4V 18A Charger
- 1 × LCD Touch Monitor
- 1 × Manual d'usuari (aquest document)
- Screws & Accessories (M3 Screws*8, M4 Screws*8, M5 Screws*10, M8 Screws*2, Display Brackets)

4. Configuració
4.1. Instal·lació de la bateria
The JOSMA LiFePO4 battery is designed for easy replacement of existing lead-acid batteries in compatible golf carts. Its lighter weight (50% less than lead-acid) simplifies handling.
- Ensure the golf cart is powered off and disconnect the old battery system.
- Carefully remove the old lead-acid batteries.
- Place the JOSMA LiFePO4 battery into the battery compartment. The battery features mounting feet and comes with fixing buckles and screws for secure and stable installation.
- Connect the battery terminals: positive (red) to positive, and negative (black) to negative. Ensure all connections are tight and secure.

4.2. Carregant la bateria
Use the provided 58.4V 18A charger to ensure optimal charging and battery longevity.
- Connect the charger to the battery's charging port.
- Plug the charger into a standard AC power outlet.
- The charger's indicator lights will show the charging status. A full charge typically takes approximately 6 hours.
- Once fully charged, disconnect the charger from the power outlet and then from the battery.

4.3. LCD Monitor & Mobile App Connection
The intelligent LCD monitor and mobile app allow real-time monitoring of battery information.
- LCD Monitor Installation: Use the provided bracket and screws to install the LCD monitor in a convenient location on your golf cart dashboard. Connect the monitor cable to the battery's dedicated monitor port.
- Connexió a l'aplicació mòbil: Download the JOSMA battery monitoring app from your device's app store. Enable Bluetooth on your mobile device and pair it with the battery. Follow the in-app instructions to connect and view real-time battery data.

5. Instruccions de funcionament
5.1. Funcionament general
The JOSMA 48V 150Ah LiFePO4 battery provides reliable power for various applications:
- Golf Carts: Compatible with popular brands like EZGO, Club Car, and Yamaha. Offers a maximum range of up to 70 miles on a single charge.
- Altres aplicacions: Suitable for RVs, UTVs, boats, trolling motors, electric lawn mowers, camping setups, and solar energy systems.


5.2. Monitorització de l'estat de la bateria
The LCD monitor and mobile app provide comprehensive real-time data:
- Monitor LCD: Mostra el percentatge de bateriatage, voltage, corrent, capacitat i temperatura.
- Aplicació mòbil: Offers detailed battery information, including charge/discharge status, cell balance, and protection alerts.
6. Manteniment
6.1. Atenció general
LiFePO4 batteries require minimal maintenance compared to lead-acid batteries:
- No watering or acid checks are required.
- Mantingueu els terminals de la bateria nets i lliures de corrosió.
- Ensure the battery case is free from physical damage. The high-strength cold-rolled sheet metal case provides robust protection.
6.2. Gestió de la temperatura
The battery features multi-stage temperature protection to ensure optimal performance and longevity:
- Temperatura de càrrega: The battery can be charged between 32°F (0°C) and 131°F (55°C). If the temperature drops below 23°F (-5°C), the BMS automatically disconnects the charging circuit and resumes at 32°F (0°C).
- Temperatura de descàrrega: The battery can be discharged between -4°F (-20°C) and 131°F (55°C). Discharge cuts off at -22°F (-30°C) and restores at -4°F (-20°C).

7. Solució De Problemes
7.1. BMS Protections
The built-in 200A Battery Management System (BMS) provides multiple layers of protection:
- Protecció de sobrecàrrega: Evita que la bateria es carregui més enllà del seu volum segurtage límit.
- Protecció contra sobredescàrrega: Evita que la bateria es descarregui per sota del seu volum segurtage límit.
- Protecció contra sobreintensitat: Protegeix contra un consum excessiu de corrent.
- Protecció contra curtcircuits: Desconnecta automàticament la bateria en cas de curtcircuit.
- Protecció d'alta temperatura: Monitors and manages internal battery temperature to prevent overheating.
- Voltage Balance: Ensures all cells within the battery pack are balanced for optimal performance and lifespan.

7.2. Problemes comuns
- LCD Monitor Malfunction: If the LCD monitor does not display information or functions sporadically, first ensure all cable connections are secure. If the issue persists, the mobile app can be used as an alternative for monitoring battery status. Contact customer support if the monitor remains non-functional.
- Charger Issues: If the charger is not functioning, verify the power outlet is working and the connections to both the battery and the wall are secure. If the charger is defective, contact customer support for a replacement.
8. Especificacions
| Característica | Especificació |
|---|---|
| Marca | JOSMA |
| Model | JA-48150 |
| Volum nominaltage | 51.2 Volts (48V system) |
| Capacitat nominal | 150 Ah |
| Capacitat energètica | 7.68 kWh |
| Potència de càrrega màxima | 10.24 kW |
| Corrent de descàrrega contínua | 200A (BMS controlled) |
| Cicle de Vida | Més de 6000 cicles |
| Vol. De càrregatage | 58.4 V |
| Sortida del carregador | 58.4V 18A |
| Temps de càrrega (0-100%) | Aprox. 6 hores |
| Composició de les cèl·lules de la bateria | Fosfat de ferro de liti (LiFePO4) |
| Dimensions (P x A x A) | 9" x 26.2" x 13" |
| Pes de l'article | 125 lliures |
| Tipus de terminal | Terminal M8 |
| Material de la caixa | High-strength cold-rolled sheet metal |
| Temperatura de funcionament (descàrrega) | -4 °F a 131 °F (-20 °C a 55 °C) |
| Temperatura de funcionament (càrrega) | De 32 °F a 131 °F (de 0 °C a 55 °C) |
| Característiques | Built-in 200A BMS, Touch LCD Monitor, Mobile APP (Bluetooth), Multi-Stage Temperature Protection |
9. Garantia i Suport
JOSMA provides a comprehensive 10-year after-sales service, which includes repairs and replacements. Additionally, the product comes with a 15-year warranty.
For any questions, technical assistance, or warranty claims, please contact JOSMA customer support. Our US-based warehouse ensures fast and efficient issue resolution, with responses typically provided within 24 hours.
Contact information can be found on the official JOSMA weblloc web o a través de la vostra plataforma de compra.





