1. Introduction
The Dumfume 12.8V 100Ah LiFePO4 lithium battery is a compact yet powerful energy storage solution, offering 1.28kWh of energy capacity with increased energy density. It is an ideal choice for various applications including caravans, camper vehicles, and off-grid energy storage systems. This battery serves as a seamless drop-in replacement for traditional lead-acid batteries, requiring no additional wiring for a hassle-free upgrade to clean energy.
Equipped with top-tier lithium iron phosphate battery cells, this battery is designed for longevity and performance, supporting up to 4000 cycles at 100% Depth of Discharge (DOD), 6000 cycles at 80% DOD, and an impressive 15000 cycles at 60% DOD, providing a 10-90% battery life.
2. Safety Information and Warnings
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Do NOT use this battery as a starting battery for vehicles.
- Do NOT use this battery for golf carts.
- Do NOT immerse the battery in water.
- Do NOT incinerate the battery.
- When connecting batteries in series or parallel, they MUST be identical (same brand, type, voltage, capacity, and BMS) and ideally purchased within 1 month to ensure optimal performance and safety.
- Avoid using the battery outside its specified operating temperature range of -4°F to 149°F (-20°C to 65°C).
3. Product Overview
The Dumfume 12.8V 100Ah LiFePO4 battery is engineered for reliability and efficiency. Its robust design includes an integrated 100A Battery Management System (BMS) that provides comprehensive protection, ensuring the safety and longevity of the battery.
Key Features:
- High Energy Capacity: 1.28kWh (1280W) for extended power supply.
- Advanced BMS: Built-in 100A BMS protects against overcharging, over-discharging, short circuits, overheating, and over-current.
- Long Cycle Life: Up to 15,000 cycles at 60% DOD, offering a long operational lifespan.
- Wide Temperature Range: Operates effectively from -4°F to 149°F (-20°C to 65°C).
- Scalability: Supports series and parallel connections up to 4S4P for larger system requirements (e.g., 51.2V 400Ah system).
4. Specifications
| Attribute | Value |
|---|---|
| Brand Name | Dumfume |
| Model Name | 12.8V 100A |
| Item Type | LiFePO4 |
| Battery Capacity | 100Ah |
| Rated Voltage | 12.8V |
| Energy (WH) | 1280W |
| Item Weight | 11kg (22.05 lbs) |
| Item Length | 12.8 inch |
| Item Width | 6.5 inch |
| Item Height | 8.46 inch |
| Terminal Bolt Size | M8 |
| Overcharge Protection Voltage | 14.6V |
| Recommended Charging Voltage | 14.6V |
| Series/Parallel Capability | Maximum 4S4P |
| Operating Temperature Range | -4°F to 149°F (-20°C to 65°C) |
| High-concerned chemical | None |
5. Setup and Installation
The Dumfume LiFePO4 battery is designed for easy integration into existing systems, particularly as a replacement for lead-acid batteries.
Initial Inspection:
Before installation, carefully inspect the battery for any signs of damage during shipping. Ensure all terminals are secure.
Connecting the Battery:
- Ensure all power sources are disconnected before making any connections.
- Connect the positive (+) terminal of the battery to the positive (+) terminal of your system.
- Connect the negative (-) terminal of the battery to the negative (-) terminal of your system.
- Use appropriate M8 terminal connectors and ensure all connections are tight and secure to prevent arcing or poor performance.
Series and Parallel Connections:
This battery supports series and parallel connections up to a maximum of 4S4P (4 batteries in series, 4 parallel strings) to achieve higher voltage or capacity. For example, a 4S4P configuration can create a 51.2V 400Ah system.
- Important: When connecting multiple batteries, ensure all batteries are of the same brand, type, voltage, capacity, and have identical BMS. For optimal performance and safety, it is highly recommended that batteries used in series or parallel configurations are purchased at the same time (within 1 month).
- Always connect batteries in parallel first to match voltages before connecting in series.
6. Operating Instructions
The Dumfume LiFePO4 battery is designed for deep cycle applications and is managed by an intelligent 100A BMS.
Charging:
- The recommended charging voltage is 14.6V.
- Use a LiFePO4 compatible charger. Do not use chargers designed for lead-acid batteries unless they have a specific LiFePO4 mode.
- The built-in BMS provides overcharge protection at 14.6V, preventing damage from excessive voltage.
Discharging:
- The battery is designed for deep discharge cycles.
- The BMS will protect against over-discharge, ensuring the battery is not drained to a level that could cause damage.
Temperature Considerations:
- Operate the battery within the specified temperature range of -4°F to 149°F (-20°C to 65°C).
- The BMS includes protection for both low and high temperatures, which may temporarily shut down the battery if temperatures exceed safe limits.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Dumfume LiFePO4 battery.
- Regular Charging/Discharging: If the battery is not in use for an extended period, charge and discharge it once every 6 months to prevent damage from disuse and maintain cell health.
- Storage: Store the battery in a cool, dry place, ideally at a partial state of charge (around 50%).
- Cleaning: Keep the battery terminals clean and free from corrosion. Use a dry cloth to wipe down the battery casing.
- Environmental Conditions: Ensure the battery is not exposed to extreme temperatures outside its operating range or immersed in water.
8. Troubleshooting
The built-in 100A BMS is designed to protect the battery from various issues. If the battery stops functioning, it may be due to one of the following protections being triggered:
| Issue | Possible Cause (BMS Protection) | Solution |
|---|---|---|
| Battery not charging | Over-Voltage Protection, Low Temperature Protection | Check charger voltage (should be 14.6V). Ensure ambient temperature is within charging limits. The BMS will reset once conditions are safe. |
| Battery not discharging/providing power | Over-discharge Protection, Over-current Protection, Short Circuit Protection, High Temperature Protection | Check load for short circuits or excessive current draw. Allow battery to warm up/cool down if temperature is extreme. Recharge the battery if it's in over-discharge state. The BMS will reset once conditions are safe. |
| Inconsistent voltage/current readings | Normal deviation | Under various temperature/humidity measurement methods and instruments, voltage and current may deviate by 1%~5%. This is generally normal. If deviation is significant, contact support. |
If the issue persists after checking these points, please contact customer support.
9. User Tips
- Proper Sizing: Always ensure the battery's capacity and voltage are appropriate for your intended application to avoid underperformance or damage.
- Ventilation: While LiFePO4 batteries are safer than other lithium chemistries, ensure adequate ventilation around the battery, especially in enclosed spaces, to dissipate any heat.
- Cable Sizing: Use appropriately sized cables for your connections to minimize voltage drop and prevent overheating, especially for high-current applications.
10. Warranty and Support
For any questions, technical assistance, or warranty claims, please contact the Dumfume Store directly through your purchase platform. Ensure you have your purchase details and product model information readily available.
