1. Product Overview
The ExpertPower 12V 5Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery (Model EP125) is designed for various applications requiring reliable and long-lasting power. This battery features advanced Lithium Iron Phosphate (LiFePO4) cell technology and an integrated Battery Management System (BMS) for enhanced performance and safety.
Figure 1: ExpertPower 12V 5Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery.
Product Video
Video 1: An overview of ExpertPower LiFePO4 Lithium Batteries, highlighting their features and benefits.
2. Key Features
- Integrated Battery Management System (BMS): The proprietary BMS is optimized for the battery cells, providing protection against overcharge, deep discharge, overloading, overheating, low temperatures, and short circuits. This system ensures maximum useful life and battery protection.
- Advanced Cell Technology: Constructed with state-of-the-art cells, offering 4000 to 7000 cycles and an expected lifetime of 10 years.
- Durability: Prismatic cells undergo rigorous testing for puncturing, fire, short circuit, and high impact damage, ensuring resilience.
- High Energy Density: LiFePO4 batteries store more energy compared to lead-acid batteries.
- Eco-Friendly: Utilizes more abundant and non-toxic materials, making them easier to recycle and produced with less energy.
- Powerful: Provides approximately four times the power of conventional Sealed Lead Acid (SLA) batteries.
- Long Service Life: Designed for over 2,500 complete charge and discharge cycles.
- Lightweight: Conveniently lighter than traditional batteries, enhancing versatility.
Figure 2: Intelligent Battery Design highlighting the BMS and A+ Grade Cylindrical Cells.
Figure 3: Multipurpose applications of the ExpertPower LiFePO4 battery.
3. Setup and Connection
Before connecting the battery, ensure all devices are turned off and appropriate safety measures are followed. Use proper wiring and connectors suitable for the battery's voltage and current ratings.
Series and Parallel Connections
This battery supports both series and parallel connections for expanding voltage or capacity. Up to four batteries can be connected in series for a 48V 5Ah configuration or in parallel for a 12V 20Ah configuration.
- Series Connection: Connect the positive terminal of one battery to the negative terminal of the next to increase voltage. Ensure all batteries have similar charge levels before connecting in series.
- Parallel Connection: Connect positive terminals together and negative terminals together to increase capacity while maintaining the same voltage. Use cables of equal length and gauge for balanced current distribution.
Figure 4: Series and Parallel Connection examples for the battery.
4. Charging Instructions
Only use LiFePO4 compatible chargers and controllers. Do not use chargers designed for Sealed Lead Acid (SLA) batteries.
Compatible Charging Methods:
- Solar Charging: Connect to a solar panel system with a compatible charge controller. This offers a renewable, cost-effective, and temperature-resistant charging solution.
- AC Adapter: Use a dedicated LiFePO4 AC adapter for convenient and fast charging.
Figure 5: Adaptable charging options: Solar Charging and AC Adapter.
5. Maintenance and Storage
LiFePO4 batteries require minimal maintenance compared to other battery types.
Low Self-Discharge
The battery exhibits a low self-discharge rate, losing approximately 2% charge per month. This characteristic, attributed to the nature of Lithium Iron Phosphate batteries and their high energy density, allows a fully charged LiFePO4 battery to potentially hold a charge for up to 1 year when stored properly.
- Store the battery in a cool, dry place away from direct sunlight and extreme temperatures.
- For long-term storage, it is recommended to store the battery at a partial state of charge (e.g., 50-70%) rather than fully charged or fully discharged.
- Periodically check the battery's charge level during extended storage.
Figure 6: Low self-discharge rate of the LiFePO4 battery.
6. Specifications
| Specification | Value |
|---|---|
| Brand | ExpertPower |
| Model Number | EP125 |
| Size | 5 Ah |
| Voltage | 12.8 Volts |
| Battery Cell Composition | Lithium Ion (LiFePO4) |
| Product Dimensions (D x W x H) | 2.76" x 3.54" x 3.98" |
| Number Of Cells | 4 |
| Resistance | 0.33 Milliohms |
| Terminal Type | F2 Terminal |
| Battery Capacity | 5 Amp Hours |
| UPC | 840140936148 |
Figure 7: Dimensions and Terminal Specifications of the EP125 battery.
7. Troubleshooting
If you encounter issues with your ExpertPower LiFePO4 battery, consider the following general troubleshooting steps:
- Battery Not Charging: Ensure the charger is specifically designed for LiFePO4 batteries and is properly connected. Check for loose connections or damaged cables. Verify the power source is active.
- Battery Not Providing Power: Check all connections to the load. Ensure the battery is adequately charged. The integrated BMS may have activated a protection mode (e.g., due to over-discharge, over-current, or low temperature); allow the battery to rest or connect to a compatible charger to reset the BMS.
- Reduced Performance: Ensure the battery is operating within its specified temperature range. Verify that the load does not exceed the battery's continuous discharge current rating.
For persistent issues, refer to the warranty and support section for further assistance.
8. Warranty and Support
The ExpertPower 12V 5Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery comes with a One Year Warranty from the manufacturer.
For warranty claims, technical support, or any product-related inquiries, please contact ExpertPower customer service. Details can typically be found on the product packaging or the official ExpertPower website.