| 2.1 | Battery model | TRQNHB40mAh |
| 2.2 | Nominal Voltage | 1.2V |
| 2.3 | Open-circuit voltage | Charge state：≥1.25V |
| 2.4 | Nominal Capacity | 40 mAh |
| 2.5 | Standard Charge | 16 hours at the constant current of 0.1CmA |
| 2.6 | Rapid Charge | 7 hours at the constant current of 0.2CmA |
| 2.7 | Trickle Charge | 0.02CmA～0.05CmA |
| 2.8 | Discharge cut-off Voltage | 1.0V |
| 2.9 | Maximum continuous discharge current | 0.5CmA |
| 2.10 | Dimensions | Diameter:11.45±0.15mm height:4.8 mm |
| 2.11 | Weight | About 1.56g |
| 2.12 | Cosmetic requirements | The battery should be free from deformation, leakage, rust and other appearance problems |
| 2.13 | Operating Temperature | Standard charging temperature: 0ºC～70ºC； Fast charging temperature: 10ºC～70ºC； Trickle charging temperature: –10ºC～70ºC； Discharge charging temperature: –10ºC～70ºC； |
| 2.14 | Storage Temperature | The battery should be kept in 10 ℃ to 25 ℃ (not more than 30 ℃), humidity 45% ~ 75%.When the battery is stored in an environment not higher than 30℃, 40℃ or 50℃, it should be charged every 4 months, 3 months or 1 month. |
| 2.15 | Relative Humidity | 65±20% |
