| Name | Button Lithium-ion polymer battery |
| Model number | PATL1240-40mAh |
| Nominal voltage | 3.7V |
| Nominal capacity | 40mAh |
| Dimensions | 12x4.0mm |
| Standard charging current | 0.2C |
| Standard discharging current | 0.2C |
| Max charging current | 1C |
| Max continuous discharging current | 1C |
| Pulse discharging current | 1.5C |
| Cut off voltage | 3.0/4.2V |
| Cycle life | 500 times |
| Charging temperature | 0 to 45°C |
| Discharging temperature | -20 to 60°C |
| Storage temperature | -10 to 35°C (recommand 20 to ±5°C) |
| Appearance | Without scratch, distortion, contamination and leakage |
| PCB | Optional |
| Wire | Optional |
| Connector | Optional |
| Certifications | CE, RoHS , REACH, UL, UN38.3, IEC 62133,BIS
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