Shenzhen Topband Battery Co., Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 450Mwh/year |
| Delivery Time | 2~3weeks for samples; 4~6weeks for mass production |
| Packaging Details | standard export carton |
| Material | lifepo4 |
| Nominal Voltage | 51.2v |
| Nominal Capacity | 20ah |
| Communication Function | GPS |
| Warranty | 3 years |
| Internal Resistance | ≤60mΩ @1kHz AC |
| Weight | About 10kg |
| Application | Two-wheeler,Electric Tricycle battery pack |
| Brand Name | Topband |
| Model Number | TB4820F-L110A |
| Certification | MSDS |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 450Mwh/year |
| Delivery Time | 2~3weeks for samples; 4~6weeks for mass production | Packaging Details | standard export carton |
| Material | lifepo4 | Nominal Voltage | 51.2v |
| Nominal Capacity | 20ah | Communication Function | GPS |
| Warranty | 3 years | Internal Resistance | ≤60mΩ @1kHz AC |
| Weight | About 10kg | Application | Two-wheeler,Electric Tricycle battery pack |
| Brand Name | Topband | Model Number | TB4820F-L110A |
| Certification | MSDS | Place of Origin | China |
| High Light | lifepo4 battery pack ，lithium iron phosphate cells | ||
Topband 48v 20ah rechargeable lifepo4 battery pack for electric two-wheeler
1. Feature:
2. Specification
|
NO |
Items |
Characteristics | |
| 2.1 | Normal capacity | 20Ah | |
| Minimum capacity | 19Ah | ||
| 2.2 | Nominal energy | 1.024kWh | |
| 2.3 | Nominal voltage | 51.2V | |
| 2.4 | Internal resistance | ≤60mΩ @1kHz AC | |
| 2.5 | Normal charge voltage | 57.6±0.5V | |
| 2.6 | Float charge voltage(for Standby use) | 54.4±0.8V | |
| 2.7 | Allowed MAX charge current | 20A | |
| 2.8 | Recommended charge current | 4A | |
| 2.9 | Allowed MAX discharge current | 30A | |
| 2.10 | End of discharge voltage | 50V~55V | |
| 2.11 | Pulse discharge current | Withstand the 50A/0.5s | |
| 2.12 | Dimension | Length 325 ±2 mm | |
| Width 185 ±2 mm | |||
| Height 180 ±2 mm | |||
| 2.13 | Weight (No accessories) | About: 10Kg | |
| 2.14 |
Operation temperature | Charge | 0～43℃ |
| Discharge | -20～60℃ | ||
| 2.15 | Self-discharge rate | ≤3%/Month; ≤15%/ year | |
| 2.16 |
Storage environment | ≤1month | -20～+60℃,5～75%RH |
| ≥3month | -10～+43℃,5～75%RH | ||
|
Recommend environment | 15～33℃,5～75%RH | ||
4. Circuit Protection
|
No |
Item |
Content |
Criterion |
| 4.1 |
Over charge |
Over-charge protection for each cell | 3.65±0.03V |
|
Over-charge release for each cell | 3.34±0.03V | ||
|
Over-charge release method |
Under the release voltage | ||
| 4.2 |
Over discharge |
Over-discharge protection each cell | 2.50±0.03V |
|
Over-discharge release for each cell | 2.90±0.03V | ||
|
Over-discharge release method |
Charging | ||
| 4.3 |
Over current |
Charge over current protection | 34A～36A,delay time 0.5~1.5s |
|
Charge over current release |
Discharge or auto release after 1min | ||
|
Discharge over current protection | 34A～36A,delay time 0.5~1.5s | ||
|
Discharge over current release |
Charge or auto release after 1min | ||
|
Short circuit protection | |||
| 4.4 |
Temperature |
Charge over temperature protection |
Protect@65±3℃; Release@50±3℃; |
|
Charge under temperature protection |
Protect@-5±3℃; Release@0±3℃ | ||
|
Discharge over temperature protection |
Protect@65±3℃; Release@50±3℃; | ||
|
Discharge under temperature protection |
Protect@-20±3℃; Release@-15±3℃ | ||
| 4.5 | MOS |
MOSFET over temperature protection |
Protect@100±10℃; Release@85±10℃; |
5.Transport & Store
The battery need to be charged every 6 months if out of use
No fall down, no pile up over 6 layers, and keep face up.
6. Application
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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