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Brand Name : Topband
Model Number : TB4820F-L110A
Certification : MSDS
Place of Origin : China
MOQ : 10
Price : negotiable
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
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

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New Electric Tricycle Lifepo4 Battery Pack 48V 20Ah 3 Years Warranty Images |