25.6V 25Ah 640Wh 2525266FR LiFePO4 Battery Pack

LiFePO4 battery pack 2525266FR is rechargeable and rated at 25.6V 25Ah 640Wh with an integrated battery management system(BMS) that provides protection against over charge, over discharge, over current, short circuit, overheat and balancing functions. BMS and terminations are optional and customizable. It can meet the UN transportation testing requirements. This type of battery has outstanding advantages such as high safety and long cycle life. Due to its excellent thermal and structural stability, its safety is significantly better than that of other battery types and can offer a long cycle life of more than 2000 cycles. These make it particularly suitable for high power and energy storage applications.

Features:

• Extremely safe. Excellent thermal and structural stability, no explosion, high safety performance.
• Super long cycle life. 2000~6000 cycles, while only 500~900 cycles for lead acid battery.
• Low self-discharge rate and no memory effect. Less than 2% per month, while more than 10% per month for lead acid battery.
• High operation voltage and power output. Cell Nominal voltage 3.2V, 3 times that of lead acid battery.
• High energy density. Approx 200Wh/Kg, only 2/3 of the volume and 1/3 of the weight of lead acid battery.
• Wide operation temperature range. Charge: 0~45°C; discharge: -20~60°C; storage: -20~40°C.
• Green energy, no harmful metals, RoHS compliance, no pollution, friendly to the environment.

Specifications:

• Name: LiFePO4 battery pack
• Model: 2525266FR
• Configure: 8S16P
• Nominal Voltage: 25.6V
• Nominal Capacity: 25Ah
• Rated Energy: 640Wh
• Charging Voltage: 29.2V max
• Charging Current: 10A max
• Charging Method: Constant Current/Constant Voltage (CC/CV)
• Discharging Current: 20A continuous
• Peak Discharging Current: 85A
• Discharging Cutoff Voltage: 18.4V
• Operation Voltage Range: 29.2V~18.4V
• Cell Type: A-grade LiFePO4 cell
• PCM/BMS: Integrated BMS for protection against overcharge, overdischarge, overcurrent, short circuit, overheat, and cell balancing
• Housing: PVC shrink wrap
• Terminal: Customizable wire leads, connectors
• Dimensions: 355mm x 170mm x 80mm max
• Weight: 7kg approx.
• Environment Conditions: Charge: 0~45°C, Discharge: -20~60°C, Storage: -20~40°C, best 20±5°C for long time storage. Humidity: 85% max
• Modifications or custom designs available

Application Scenarios:

• High-Performance E-Scooters & E-Bikes: Deliver the torque and acceleration riders demand, thanks to the high discharge capability.
• Commercial Electric Tools: Power professional lawn mowers, pressure washers, and construction equipment that require high burst current.
• Industrial AGVs & Larger Robotics: Provide the sustained high current needed to drive more powerful motors and complex systems.
• Server Backup Power (UPS): Serve as a reliable, high-current DC power source for backup systems.
• Power Supplies & Motor Controllers: An ideal DC source for 48V-based systems across telecom, networking, and industrial automation.
• Household/commercial energy storage, power transmission and transformer station, etc.

Charging & Safety Guidelines:
Always follow these guidelines for safe operation and maximum cycle life:

• Use only a charger compatible with the charging specifications of the battery.
• Charge at standard current rate for optimal cycle life; max current rate for faster charging.
• Never charge above the maximum charging voltage to avoid overcharge.
• Do not discharge below the discharging cutoff voltage to avoid overdischarge and prevent permanent damage.
• Do not discharge above the current rating. Exceeding these limits may trigger BMS protection or cause permanent damage to the battery cells.
• Operate the battery within the specified environmental conditions (temperature, humidity, and ventilation).
• Keep the battery away from fire, open flames, radiators, and other heat sources.
• Do not expose the battery to direct sunlight for extended periods during operation.
• Store at 20±5°C for extended periods to maximize longevity. Keep humidity below 85% during storage.
• Do not disassemble, puncture, or expose to fire.

Shipping & Handling Instructions:
To ensure safe transport and compliance with international regulations, please note the following:

• The battery can be shipped by air, sea, and ground transport — subject to applicable dangerous goods regulations for lithium batteries.
• UN38.3 Compliant — The battery has been tested and certified in accordance with UN38.3 for safe air and sea transport.
• Package Properly — Use only UN-certified packaging for lithium batteries. Ensure terminals are protected against short circuits and pack securely to prevent movement during transit.
• State of Charge (SoC) — For transport, maintain the battery at ≤30% state of charge as required by IATA and IMDG regulations.
• Labeling — Packages must display the appropriate lithium battery handling labels and include emergency contact information.
• Documentation — Ensure the shipping declaration includes the proper UN number (e.g., UN3480 for lithium-ion batteries) and your dangerous goods transport documents.
• Prohibited Shipments — Damaged, defective, or recalled batteries are strictly prohibited from transport.

Storage & Long-Term Maintenance:
To ensure maximum service life and maintain optimal cell health, please follow these guidelines for extended storage:

• Optimal Temperature — Store the battery at a stable temperature between 15°C and 25°C (ideal: 20±5°C). Avoid exposure to extreme heat, direct sunlight, or freezing conditions.
• Recommended Humidity — Keep storage environment humidity below 85% to prevent moisture ingress and potential damage to the battery cells and BMS components.
• Partial Charge for Storage — For extended storage (longer than 3 months), maintain the battery at approximately 50%–60% state of charge (around the nominal voltage). Do not store fully charged or fully depleted — both conditions accelerate capacity degradation.
• Periodic Maintenance Cycle — For batteries stored over six months or longer, perform at least one full charge/discharge cycle every six months to maintain cell health. This helps recalibrate the BMS, balance the cells, and prevent voltage drift that can lead to capacity loss.
• Inspect Before Use — Before returning a stored battery to service, inspect for any signs of swelling, leakage, or damage. If the battery voltage is below the discharging cutoff voltage, it has been over-discharged and should not be reused.

💡 Why cycle stored lithium batteries? Cells naturally self-discharge over time, and the built-in BMS circuit consumes a small amount of current even when idle. In multi-cell packs, slight variations in self-discharge rates between cells can gradually cause voltage imbalances. A maintenance cycle keeps the cells electrochemically active, balances the pack, and prevents capacity loss or degradation.