1. Introduction
This manual provides essential information for the safe and efficient use of your dumfume 12V 100Ah Mini LiFePO4 Lithium Battery. Please read this manual thoroughly before installation and operation to ensure proper handling and to maximize the battery's lifespan and performance. This battery is designed for energy storage applications such as RVs, solar systems, and home energy storage.
2. Safety Information
Adhering to safety guidelines is crucial when handling lithium batteries. Failure to follow these instructions can result in serious injury, property damage, or reduced battery performance.
- Do not use as a starting battery: This LiFePO4 battery is designed for deep cycle energy storage, not for engine starting applications.
- Avoid extreme temperatures: Do not incinerate the battery or immerse it in water. Operate within the specified temperature range.
- Proper ventilation: Ensure adequate ventilation during charging and discharging.
- Short circuit prevention: Avoid short-circuiting the battery terminals. Use insulated tools.
- Overcharge/Over-discharge protection: The built-in Battery Management System (BMS) provides protection against these conditions. However, always use a compatible LiFePO4 charger.
- Professional installation: If you are unsure about installation or wiring, consult a qualified professional.
- Identical batteries for series/parallel: When connecting multiple batteries, ensure they are of the same brand, type, voltage, capacity, and BMS, and were purchased within 1 month.
3. Product Overview and Features
The dumfume 12V 100Ah Mini LiFePO4 Lithium Battery offers a reliable and efficient power solution with advanced features.
Key Features:
- High Energy Density: Weighing approximately 19-20 lbs, it is significantly lighter than traditional lead-acid batteries while offering 1280Wh capacity.
- Extended Lifespan: Provides up to 10 years of service life, with 4000 cycles at 100% Depth of Discharge (DOD) and up to 15,000 cycles at 60% DOD.
- Integrated 100A BMS: The Battery Management System protects against overcharge, over-discharge, overcurrent, short circuits, and extreme temperatures (-4°F to 158°F), ensuring stable performance and cell balancing.
- Expandable Design: Supports series and parallel connections up to 4S4P, allowing for a maximum capacity of 20.48kWh for various power needs.
Product Dimensions:
The battery features a compact design for versatile installation.
- Length: 10.23 inches
- Width: 6.61 inches
- Height: 8.46 inches
- Terminal Type: M8
4. Installation and Setup
Proper installation is critical for the safety and performance of your battery system.
4.1 Pre-Installation Checks
- Inspect the battery for any physical damage.
- Ensure all connections and cables are clean and free of corrosion.
- Verify that your charging system (charger, solar charge controller, inverter) is compatible with LiFePO4 batteries and can provide the correct charging voltage and current.
4.2 Connecting Multiple Batteries (Series/Parallel)
The dumfume 12V 100Ah Mini LiFePO4 battery supports connections up to 4S4P (4 in series, 4 in parallel) for increased voltage or capacity.
- Important: When connecting multiple batteries, they must be identical (same brand, type, voltage, capacity, and BMS) and ideally purchased within the same month to ensure balanced performance.
- Parallel Connection: Connect positive terminals together and negative terminals together to increase capacity (Ah) while maintaining the same voltage (V).
- Series Connection: Connect the positive terminal of one battery to the negative terminal of the next to increase voltage (V) while maintaining the same capacity (Ah).
- Always use appropriate gauge cables and fuses for your system's current requirements.
4.3 Initial Charging
It is recommended to fully charge the battery before its first use. Use a dedicated LiFePO4 charger with the correct voltage settings.
5. Operating Instructions
Follow these guidelines for optimal operation of your dumfume LiFePO4 battery.
- Charging: Use a LiFePO4 compatible charger. The BMS will protect against overcharge.
- Discharging: The battery can be discharged within its specified temperature range of -4°F to 158°F. The BMS will prevent over-discharge.
- Temperature Considerations: While the battery can discharge in cold temperatures, charging below 32°F (0°C) is generally not recommended for LiFePO4 batteries without specific low-temperature charging features, as it can damage the cells. Refer to the BMS specifications for exact charging temperature cut-offs.
- Load Management: Avoid exceeding the maximum continuous discharge current specified in the technical specifications to prevent BMS shutdown.
6. Maintenance
Minimal maintenance is required for LiFePO4 batteries, but following these steps will ensure longevity.
- Regular Inspection: Periodically check battery terminals for cleanliness and tightness.
- Storage: If storing the battery for an extended period, charge it to approximately 50-70% State of Charge (SOC) and store in a cool, dry place. Charge/discharge the battery once every 6 months to prevent damage from disuse.
- Cleaning: Use a dry cloth to clean the battery casing. Do not use solvents or immerse in water.
7. Troubleshooting
If you encounter issues with your battery, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging | Charger incompatibility, BMS protection activated (over-discharge, low temperature), loose connections. | Verify charger is LiFePO4 compatible. Check battery voltage; if very low, a specialized recovery charger may be needed. Ensure all connections are secure. Move battery to a warmer environment if charging in cold conditions. |
| Battery not discharging/no power output | BMS protection activated (over-discharge, overcurrent, short circuit), loose connections. | Check load for short circuits or excessive current draw. Disconnect load and reconnect after a few minutes to reset BMS. Ensure all connections are secure. Charge the battery if it is in an over-discharged state. |
| Reduced capacity or runtime | Aging battery, improper charging, extreme operating conditions. | Ensure battery is fully charged regularly. Avoid consistently operating at very high or low temperatures. If the battery is very old, its natural capacity may have diminished. |
If the problem persists after attempting these solutions, please contact dumfume customer support.
8. Specifications
Detailed technical specifications for the dumfume 12V 100Ah Mini LiFePO4 Lithium Battery.
| Specification | Value |
|---|---|
| Brand | dumfume |
| Model Number | 2*DFBattery-12V100AM |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 100Ah |
| Energy | 1280Wh |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| BMS | Built-in 100A |
| Cycle Life | 4000 cycles @ 100% DOD, up to 15,000 cycles @ 60% DOD |
| Dimensions (L x W x H) | 10.23 x 6.61 x 8.46 inches |
| Item Weight | Approx. 19-20 lbs (46.6 pounds for 2-pack) |
| Terminal Type | M8 |
| Discharge Temperature Range | -4°F to 158°F (-20°C to 70°C) |
| Charging Temperature Range | 32°F to 113°F (0°C to 45°C) (typical for LiFePO4, refer to BMS for exact cut-off) |
| Series/Parallel Capability | Up to 4S4P (max 20.48kWh) |
9. Warranty and Support
dumfume is committed to providing quality products and customer satisfaction.
Warranty Information:
For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official dumfume website. The warranty typically covers defects in materials and workmanship under normal use.
Customer Support:
If you have any questions, concerns, or require technical assistance, the dumfume Support Team is available 24/7. Please have your model number and purchase information ready when contacting support.
- Website: www.dumfume.com
- Contact Email: service@dumfume.com