1. Introduction
This manual provides essential information for the safe and efficient use of your E-LekTech 48V 100Ah LiFePO4 Lithium Battery. Please read these instructions carefully before installation and operation to ensure optimal performance and longevity of your battery.
2. Product Features
- Long Life & Deep Cycle: Designed for over 10,000 charge cycles with a lifespan of up to 10 years, offering a stable and reliable power source.
- Touchable Smart Display & APP Monitoring: Features a built-in touch screen for real-time battery status monitoring and a dedicated mobile application for remote data access.
- Upgraded Cell Technology: Utilizes high-density cells providing 5.12kWh energy capacity and a maximum output power of 2.56kW.
- Integrated 200A BMS: The advanced Battery Management System protects against overcharge, overdischarge, overcurrent, short circuit, and includes high/low temperature cut-off functions.
- Expandable Capacity: Supports parallel connection of up to 6 units for increased capacity, compatible with solar panels, MPPT controllers, and inverters.
3. Package Contents
Verify that all components are present upon unpacking:
- E-LekTech 48V 100Ah LiFePO4 Lithium Battery (Quantity: 1 per unit purchased)
4. Safety Instructions
Adhere to the following safety guidelines to prevent injury or damage:
- Do not reverse polarity when connecting the battery. Ensure positive (+) terminals connect to positive and negative (-) to negative.
- Use only compatible chargers designed for LiFePO4 batteries.
- Keep the battery away from heat sources, open flames, and flammable materials.
- Avoid short-circuiting the battery terminals.
- Do not disassemble, puncture, or modify the battery.
- Ensure adequate ventilation around the battery during charging and discharge.
- Wear appropriate personal protective equipment (PPE) such as gloves and eye protection when handling batteries.
- In case of fire, use a Class D fire extinguisher. Water can exacerbate lithium battery fires.
5. Setup and Installation
5.1 Physical Dimensions and Weight
Before installation, confirm the battery dimensions and weight are suitable for your intended space.
5.2 Initial Charging
It is recommended to fully charge each battery individually before connecting them in parallel or to your system. This ensures all batteries are in a voltage-balanced state for optimal performance and longevity.
5.3 Parallel Connection
The E-LekTech 48V 100Ah LiFePO4 battery supports expansion up to 6 parallel circuits. When connecting multiple batteries in parallel:
- Ensure all batteries are of the same brand and model.
- Fully charge each battery separately to the same voltage level before making parallel connections.
- Connect positive terminals together and negative terminals together.
- Use appropriate gauge cables for the expected current load.
5.4 System Integration
This battery is designed for integration with solar panels, MPPT charge controllers, and inverters. Consult the manuals of your other system components for specific connection diagrams and requirements.
6. Operating Instructions
6.1 Battery Monitoring
The battery features a touchable smart display and a mobile application for comprehensive monitoring:
- Touch Screen Display: Provides real-time data such as voltage, current, temperature, and state of charge.
- Mobile App: Download the dedicated E-LekTech app to your smartphone to monitor battery information remotely via Bluetooth.
6.2 Recommended Applications
This E-LekTech LiFePO4 battery is suitable for a variety of applications:
- Off-Grid Power Systems
- Home Energy Storage
- Recreational Vehicles (RVs) and Motorhomes
- Marine Applications
- Golf Carts
- Emergency Backup Power
6.3 Product Video
Watch this video for an overview of the E-LekTech LiFePO4 Lithium Battery and its applications.
7. Maintenance
7.1 Charging Methods
The battery can be charged using various methods:
- Solar System Charging: Connect to a compatible solar panel and MPPT charge controller.
- Dedicated Charger Charging: Use a LiFePO4 compatible battery charger.
- Generator Charging: Connect via an appropriate inverter/charger setup.
7.2 Temperature Considerations
The built-in BMS provides temperature protection:
- Charging will stop if the temperature drops below -4°F (-20°C).
- Charging will resume when the temperature is at or above -4°F (-20°C).
- Discharging will stop if the temperature drops below -22°F (-30°C).
7.3 Storage
For long-term storage, store the battery in a cool, dry place, ideally at a state of charge between 50% and 70%. Periodically check the voltage and recharge if necessary to prevent deep discharge.
8. Troubleshooting
8.1 BMS Protection Triggers
The integrated 200A BMS protects the battery from various conditions. If the battery stops functioning, check for the following:
- Over Current Protection: Occurs if the discharge current exceeds the maximum limit. Reduce the load.
- Over-Discharge Protection: Activates when the battery voltage drops too low. Recharge the battery immediately.
- Over Voltage Protection: Engages if charging voltage is too high. Use a compatible charger with correct voltage settings.
- Short Current Protection: Triggered by a short circuit. Disconnect the short and reconnect the battery.
- Overcharge Protection: Prevents overcharging. Ensure charger is functioning correctly.
- Overheating Protection: Activates if internal temperature is too high. Allow the battery to cool down in a well-ventilated area.
- Low Temp Cutoff Protection: Prevents damage from charging/discharging in extreme cold. Refer to Section 7.2.
8.2 General Issues
- If the battery does not charge, check all connections, the charger, and the power source.
- If the battery does not provide power, ensure it is adequately charged and that all connections are secure.
- For persistent issues, consult the warranty and support section for contact information.
9. Specifications
| Specification | Value |
|---|---|
| Brand | E-LekTech |
| Model Number | EL48V 100Ah TB 4PC |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Voltage | 48 Volts |
| Capacity | 100 Amp Hours (Ah) |
| Energy Capacity | 5.12 kWh |
| Max Output Power | 2.56 kW |
| BMS | Built-in 200A Smart BMS |
| Cycle Life | >10,000 cycles |
| Parallel Connection | Supports up to 6 units |
| Weight | 89 Pounds |
| Recommended Uses | Off-Grid, Home Energy Storage, RV, Marine |
10. Warranty and Support
The E-LekTech 48V 100Ah LiFePO4 Lithium Battery comes with a 5-Year Warranty.
For technical support, warranty claims, or any inquiries, please contact the seller, WHJCenergy, through your purchase platform or refer to the contact information provided with your product documentation.