Shenzhen Topband Battery Co., Ltd
| 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 | 20Ah |
| Weight | 520g |
| Dimension | 70x28x145mm |
| Cycle life | ≥2000 (100% DOD) |
| Internal Impedance | ≤10.0mΩ |
| Discharge current | 40A |
| Warranty | 2 years |
| Brand Name | Topband |
| Model Number | TB-027070145C-Fe-20Ah |
| Certification | CE/UN38.3/MSDS/UL |
| Place of Origin | China |
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Product Specification
| 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 | 20Ah | Weight | 520g |
| Dimension | 70x28x145mm | Cycle life | ≥2000 (100% DOD) |
| Internal Impedance | ≤10.0mΩ | Discharge current | 40A |
| Warranty | 2 years | Brand Name | Topband |
| Model Number | TB-027070145C-Fe-20Ah | Certification | CE/UN38.3/MSDS/UL |
| Place of Origin | China | ||
| High Light | Lifepo4 Prismatic Cells ，Lithium Iron Phosphate Cells | ||
Green product: LiFePO4 material is no harm to enviroment and human being
Cycle life: More than 2000 cycle times
Very safe: It have the best safety and steady performance,no fire ,no exploding under the condition of over-charge.
Light weight and smaller dimension: The dimension compares with other battery.about 1/2-2/3 weight of lead acid
Great capacity and more powerful,rechargeable battery: We can install many single cells in series and in parallet and it can fully discharge
No memory effect: It can be recharged anytime,no reduction of the capacity
| Item | Specification | Remark | |
| 2.0 Nominal Capacity | 20Ah | 0.5C discharge capacity | |
| 2.1 Minimum Capacity | 20Ah | ||
| 2.2 Internal Impedance | ≤10.0mΩ | By AC 1KHz | |
| 2.3 Nominal Voltage | 3.20V | ||
| 2.4 Cell Weight | 520±10g | containing package | |
| 2.5 End-of-charge Voltage | 3.65V | At CC mode | |
| 2.6 End-of-charge Current | 0.05C | At CV mode | |
| 2.7 End-of-discharge Voltage | 2.00V | ||
| 2.8 Charge Method | 0.5C CC/CV | 180 minutes | |
| 2.9 Quick Charge Method | 1C CC/CV | 90 minutes | |
| 2.10 Max Continuous Discharge current | 40A | Continuous Discharge Time: 30 minutes | |
| 2.11 Max pulse Discharge Current | 60A | Continuous Discharge Time: 10 seconds | |
| 2.12 Cycle Life | ≥2000 cycles | 1C Continual Discharge: ≥80% | |
2.13 Operating | Charging Temperature | 0～45℃ | Ambient temperature:25℃±5℃ |
| Discharging Temperature | -20～55℃ | Ambient temperature: 25℃±5℃ | |
| Storage Temperature | -20～35℃ | Recommended temperature range for long term storage is –10~ +30° | |
| 2.14 Shelf Life | 2 years | ||
| 2.15 Appearance | Without break, scratch, distortion, contamination, leakage and so on | ||
| Test Item | Test Method | Criteria |
| 3.1 55℃ Short- circuit Test | A oven is to be raised to the temperature of 55℃and remain for 10min. A cell is placed into the oven and remain for 30 min~40 min. Then the cell is short-circuited by connecting the positive and negative terminals with copper wire which having a maximum resistance load of 5mΩ. The temperature of cell surface is monitored constantly, until the cell has reached a completely discharged state of less than 0.2 volt or the cell surface temperature has returned to ±10°C (±18°F) than ambient temperature | 1.No fire, no explosion |
3.2 Overcharge | A cell is discharged to cut-off voltage at a constant current of 0.2C, then it is subjected to CC/CV power by connecting its positive and negative terminal, then set the current as 3C, the voltage as 10V, and charging time is not less than 7 hours. | No fire, no explosion |
| 3.3 Forced-Discharge Test | A cell is discharged to cut-off voltage 0V at a constant current of 1C. | No fire, no explosion, no leakage |
| 3.4 Crush Test | A cell is to be placed on the crush flat, the axis is parallel to the crush flat, it is crushed between two flat surfaces. The crushing force is approximately 13 kN and hold for 1min. | No fire, no explosion |
| 3.5 Impact Test | A cell is to be placed on the impact flat. A Φ15.8mm bar is to be placed on the center of the cell. A 9.1kg weight is dropped from a height of 610mm onto the cell, the distortion is allowed. | No fire, no explosion |
3.6 Heating | A cell is heated in a circulating air oven. The temperature of the oven is raised at a rate of 5℃±2℃ per minute to 130℃±2℃ and remain for 30 min before the test is discontinued. | No fire, no explosion |
4. LiFePO4 lithium battery cells 3.2V 20Ah dimension
5. Our Service
6. Certification
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1996
Total Annual:
240million-250million
Employee Number:
5000~5500
Ecer Certification：
Active Member
Shenzhen Topband Co., Ltd. was registered in so-called “China Silicon Valley”, Shenzhen Hi-tech Industrial Park in 1996, and got listed in Shenzhen Stock Exchange ( the stock code as 002139) in 2007. After years of rapid development, now Topband takes lithium battery as the ... Shenzhen Topband Co., Ltd. was registered in so-called “China Silicon Valley”, Shenzhen Hi-tech Industrial Park in 1996, and got listed in Shenzhen Stock Exchange ( the stock code as 002139) in 2007. After years of rapid development, now Topband takes lithium battery as the ...
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