Charger is a dual voltage unit which can operate all Bahco 12 V and 14.4 V battery packs Charging to 100% takes around 40 minutes The charging time can be altered by the remaining battery capacity level, the charging environment, ambient temperature and the age of the battery The Bahco intelligent charger protects the battery from over-current, over-charging and over-heating The right environment conditions are dry and ventilated areas, protected from dust and at a temperature between +10 °C to +25 °C The charger automatically stops once the battery is fully charged When a battery is fully discharged, the tool will no longer be operative LEDs on the main charger board indicates the status level of the battery Never put a broken or cracked battery pack to charge