Honeywell COB01 Charge-Only Base - Power Supply not included Type: Charge Specification: Voltage: 4.5 to 5.5 volts Current: 1A Charge Time: 5 hours Temperature Ranges: - 5 - 40 degree C - -40 - 70 degree C Vibration: 5G Peak from 22Hz to 300Hz ESD Immunity: - Up to 15kV direct air - Up to 8kV indirect coupling plane