[. . . ] Do not charge Alkaline, Zinc Carbon, Lithium or any other type of battery not specified on the charger. To avoid risk of electric shock, unplug the charger from the electrical outlet before cleaning or when not in use. [. . . ] To avoid risk of electric shock, unplug the charger from the electrical outlet before cleaning or when not in use. Keep the charger away from dust and dirt, which can cause premature wear of parts or harm its normal operation. â· Never use the charger as a power source for any electrical equipment. â· Do not incinerate, disassemble or short circuit batteries since they may burst or release toxic materials. â· This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. â· You can only charge batteries of the same size and type (AA/AAA). Note: It is normal for the unit and the batteries to become warm while charging. > If any of the batteries is not installed correctly, the LED will not light and the charger will not start charging. A bad battery), the LED will flash green and the battery/batteries will not be charged. > When the batteries are fully charged, the green LED will turn off. [. . . ] A bad battery), the LED will flash green and the battery/batteries will not be charged. > When the batteries are fully charged, the green LED will turn off. [. . . ]