... the result value exceeding the limit. Battery information indicates the rest capacity of the battery and the charge status.User calibration ... can save data permanently.NI-MH rechargeable battery as the power source. With rechargeable battery, charging for three hours, it can ... 57.5 +/- 0.5) mm, diameter is 30mm Battery pack: 6V NI-MH Battery charger: 9V/500mA Continuous working period: about 150 hours ...