| Electrical Characteristics | Nominal Voltage | 3.7V |
| Nominal Capacity | 55mAh | |
| Energy | 0.2Wh | |
| Battery type | Lipo | |
| Cycle Life | 550+ cycles | |
| Months Self Discharge | ≤3% per month at 25℃ | |
| Standard Charge | Charge Voltage | 4.2±0.2V |
| Charge Mode(CC/CV) | At 0℃~45℃, charged to 4.2V at constant current of 0.2C5A, and then change continuously with constant voltage of 4.2V until the current was not more than 0.02C5A. | |
| Standard Charge Current | 27.5mA | |
| Max.Charge Current | 55mA | |
| Standard Discharge | Standard discharge Current | 27.5mA |
| Max. Discharge Current | 55mA | |
| Discharge Cut-off Voltage | 3.0V | |
| Environmental | Charge Temperature | 0℃~45℃ |
| Discharging | -10℃~65℃ | |
| Storage temperature | -5℃~35℃ | |
| Storage Humidity | ≤75% RH | |
| Water Dust Resistance | IP50 | |
| Mechanical | Cell | Singe cell + PCM |
| Housing | Aluminum Foil | |
| Cell Dimension(L*W*H*) | T4*W11*L20mm | |
| PCM | TBA | |
| N.W.: | Approx. 1.1g |
401020 or 401119 or 401120 small lipo battery could be 45mAh 50mAh 55mAh and 60mAh, it's a very small and regular battery, it could be equipped with PCM and NTC as per your needs, this small lipo battery is very popular for selfie stick, wrist band, medical device, trackers, TWS and etc.
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