1. Overview
The VEMDIA 12V 100Ah LiFePO4 Lithium Battery is a high-performance, deep-cycle battery designed for various applications including solar systems, home energy storage, RVs, marine vessels, and off-grid power solutions. Featuring a built-in Battery Management System (BMS) and a long cycle life, this battery offers reliable and efficient power delivery.
2. Safety Information
Your VEMDIA LiFePO4 battery is equipped with an advanced 100A Battery Management System (BMS) to ensure safe and optimal operation. The BMS provides protection against:
- Overcharging
- Over-discharging
- Over-current
- Overheating
- Short circuits
- Low temperature protection
Important Safety Guidelines:
- Do not disassemble, puncture, or damage the battery.
- Use only a compatible lithium iron phosphate battery charger (14.6V 20A charger recommended).
- Ensure proper ventilation during charging and discharging.
- Avoid exposing the battery to extreme physical shock or vibration.
- Operate within the specified temperature ranges for charging (0~45°C) and discharging (-20~60°C).
- Always connect positive to positive and negative to negative terminals.
3. What's in the Box
Upon unboxing your VEMDIA 12V 100Ah LiFePO4 Lithium Battery, you should find the following items:
- 1 x 12V 100Ah LiFePO4 Lithium Battery
- 2 x M8- 5/8" (16mm) Terminal Bolts
- 2 x Insulating Caps
- 1 x User Manual
4. Setup
The VEMDIA 12V 100Ah LiFePO4 battery is designed for easy installation and can serve as a drop-in replacement for lead-acid batteries. Follow these steps for proper setup:
4.1. Terminal Connection
- Remove the insulating caps from the positive (red) and negative (black) terminals.
- Connect your battery cables to the corresponding terminals using the provided M8 bolts. Ensure a secure connection to prevent arcing or poor conductivity.
- Always connect the positive terminal first, then the negative terminal.
- Replace the insulating caps after connections are made.
4.2. Capacity Expansion (Series & Parallel)
This battery supports connections in parallel and series for increased capacity or voltage:
- Parallel Connection: Connect up to 4 batteries in parallel to achieve a maximum of 400Ah capacity (12.8V).
- Series Connection: Connect up to 4 batteries in series to achieve a maximum of 48V (51.2V) voltage.
- Series & Parallel: A combination of up to 4S4P is possible for a maximum of 400Ah capacity at 48V (51.2V), providing up to 20.48kWh usable energy.
Important: When connecting batteries in series or parallel, ensure all batteries are of the same brand, model, and capacity, and are fully charged to a consistent voltage before connecting.
5. Operating the Battery
5.1. Charging
The VEMDIA LiFePO4 battery can be recharged using three primary methods:
- LiFePO4 Battery Charger: A 14.6V 20A charger is recommended for a fast charge (approximately 5 hours).
- Solar Panel with Controller: Connect a solar panel through a compatible charge controller to recharge the battery using solar energy.
- Alternator: The battery can also be charged via an alternator in vehicles.
Ensure the charging temperature is within 0~45°C for optimal battery health and safety.
5.2. Discharging
The VEMDIA LiFePO4 battery provides constant power output throughout its discharge cycle, unlike lead-acid batteries which experience a steady power drop. The safe discharging temperature range is -20~60°C.
6. Maintenance
The VEMDIA LiFePO4 battery is a maintenance-free battery. Its advanced chemistry and built-in BMS eliminate the need for frequent maintenance such as acid refilling or terminal cleaning common with lead-acid batteries.
Storage Recommendations:
- If storing the battery for an extended period, ensure it is charged to approximately 50% State of Charge (SOC).
- Recharge the battery every 6 months to maintain optimal performance and extend its lifespan.
- Store in a cool, dry place away from direct sunlight and extreme temperatures.
7. Troubleshooting
The built-in BMS protects the battery from various fault conditions. If the battery stops functioning or exhibits unusual behavior, check the following:
- No Power Output: The BMS may have activated due to over-discharge, over-current, or short circuit. Disconnect the load, wait a few minutes, and attempt to recharge the battery.
- Charging Issues: Ensure your charger is compatible with LiFePO4 batteries (14.6V) and that connections are secure. Check if the charging temperature is within the acceptable range (0~45°C).
- Overheating: If the battery feels excessively hot, disconnect it immediately and allow it to cool down. The BMS will trigger overheating protection.
For persistent issues, refer to the detailed troubleshooting section in the included user manual or contact VEMDIA customer support.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | VEMDIA |
| Model | 12V 100Ah Group 31 |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 12.8 Volts |
| Battery Capacity | 100 Amp Hours |
| Energy | 1280Wh |
| Built-in BMS | 100A |
| Max Continuous Discharge Current | 100A |
| Max Peak Discharge Current | 200A (3-5s) |
| Recommended Charge Current | 20A |
| Max Charge Current | 100A |
| Charge Voltage | 14.6V |
| Charging Temperature Range | 0~45°C (32~113°F) |
| Discharging Temperature Range | -20~60°C (-4~140°F) |
| Product Dimensions | 12.9"D x 6.6"W x 8.5"H |
| Item Weight | 24 pounds |
| Terminal Type | Screw Terminal (M8) |
| Cycle Life | 4000~15000 deep cycles (6000 cycles at 100% DOD, 8000 cycles at 80% DOD, 15000 cycles at 60% DOD) |
| Parallel & Series Connection | Up to 4S or 4P (Max 4S4P) |
9. Warranty & Support
The VEMDIA 12V 100Ah LiFePO4 Battery is designed for a long service life, offering 4000 to 15000 deep cycles, which translates to more than 10 years of reliable service under optimal conditions.
For any questions or issues regarding delivery, battery performance, or usage, a proper solution will be provided within 24 hours by VEMDIA customer support.