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| Categories | Rechargeable Lifepo4 Battery |
|---|---|
| Brand Name: | Topband |
| Model Number: | TB-027070169D-Fe-27Ah |
| Certification: | CE/UN38.3/MSDS/UL |
| Place of Origin: | China |
| MOQ: | 500pcs |
| Price: | Negotiable |
| Payment Terms: | L/C, T/T |
| Supply Ability: | 450Mwh/year |
| Delivery Time: | 2~4weeks for samples; 4~6weeks for mass production |
| Packaging Details: | standard export carton |
| Material: | LiFePO4 |
| Norminal voltage: | 3.2V |
| Norminal capacity: | 27Ah |
| Internal Impedance: | ≤8.0mΩ |
| Weight: | 680g |
| Cycle life: | ≥2000 (100% DOD) |
| Warranty: | 2 years |
| Item | Specification | Remark | |
| 5.0 Nominal Capacity | 27Ah | 25±5℃,1C discharge capacity | |
| 5.1 Typical Capacity | 27.5Ah | ||
| 5.2 Internal Impedance | ≤8.0mΩ | By AC 1KHz | |
| 5.3 Nominal Voltage | 3.20V | ||
| 5.4 Cell Weight | 680±20g | ||
| 5.5 End-of-charge Voltage | 3.65V | At CC mode | |
| 5.6 End-of-charge Current | 0.05C | At CV mode | |
| 5.7 End-of-discharge Voltage | 2.00V | ||
| 5.8 Charge Method | 1C CC/CV | ||
| 5.9 Quick Charge Method | 2C CC/CV | ||
| 5.10 Max Continuous Discharge current | 3C | Continuous Discharge Time: 18 minutes | |
| 5.11 Max pulse Discharge Current | 5C | Continuous Discharge Time: 10 seconds | |
| 5.12 Cycle Life | ≥2000cycles | 0.5C Continual Discharge: ≥80% | |
5.13 Operating | Charging Temperature | 0～45℃ | Ambient temperature:25℃±5℃ |
| Discharging Temperature | -20～55℃ | Ambient temperature: 25℃±5℃ | |
| Storage Temperature | -10～30℃ | Recommended temperature range for long term storage is -10~ 30℃ | |
| 5.14 Shelf Life | 2 year | Warranty since the date of the shipment | |
| 5.15 Appearance | Without break, scratch, distortion, contamination, leakage and so on | ||
| Test item | Test Method | Criteria |
3.1 | The cell was charged in accordance with 6.2, and stored in an ambient temperature of 55℃±3℃ for 5h, then discharged to cut-off voltage at a constant current of 1C. After that, fetch out the cell and place it in the ambient temperature of 25℃±5℃ for 4h then check its appearance. | 1.Capacity retention:≥90%; |
3.2 | The cell was charged in accordance with 6.2,and stored in an ambient temperature of -20℃±3℃ for 24 hours, then discharged to cut-off voltage 1.8V at a constant current of 1C. After that, fetch out the cell and place it in the ambient temperature of 25℃±5℃ for 4hours, then check its appearance. Recommended cut-off voltage to 1.8V. | 1.Capacity retention:≥70%; |
3.3 | In an ambient temperature of 25℃±5℃ | Capacity retention:≥80% |
3.4 | The cell was charged in accordance with 6.2, then discharged to cut-off voltage at a constant current of 3C in an ambient temperature of 25℃±5℃. After that,fetch out the cell and place it in the ambient temperature of 25℃±5℃for 4h, then check its appearance | Capacity retention:≥90% |
3.5 | The cell was charged in accordance with 6.2, and stored in an ambient temperature of 25℃±5℃ for 28days, then discharged to cut-off voltage at a constant current of 1C. | Capacity retention:≥85% |
3.6 | The cell was charged to cut-off voltage with current 0.5C, and then charged with constant voltage of 3.65V until the charge current is less than 0.05C, after that stored for 20min; Subsequently, the cell was discharged to cut-off voltage with constant current 1C, and stored 30 min; prior to next charge-discharge cycle. The cell shall be continuously charged and discharged for 2000 times. | capacity retention:≥80% |
4. LiFePO4 battery cells 3.2V 27Ah dimension
5. Our service
6. Certification
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