[. . . ] This charger is designed to charge NI-Cd or NI-MH batteries in the following sizes/quantities: -2 or 4 batteries size AAA/R03 -2 or 4 batteries size AA/R06 2. Place 2 or 4 batteries size AAA/R03 or AA/R06 into the charger compartments, taking care to observe polarity (+/-) as indicated inside the charger. [. . . ] If the red LED light flashes, the batteries placed in the charger are faulty and should be removed. Unplug the charger and remove the batteries from the unit when not in use. Trodden on, pinched or folded, particularly near the sockets and the connection with the device. â· To disconnect the power supply cable, pull on the plug and not on the cord. â· If the power supply cable is damaged, stop using the device immediately. When the batteries are fully charged, the charger will automatically switch to a minimum maintenance charge if the batteries are not immediately removed from the unit. â· Do not mix cell sizes, technologies or capacities in the charger. â· Do not expose the charger to high temperatures or allow moisture or humidity of any kind to come into contact with the charger. â· The charger should not be used by children without supervision, or by disabled persons where the disability could prevent compliance with safety recommendations. â· Children should be supervised at all times to ensure that they do not play with the charger. [. . . ] By participating in separate waste collection, you are contributing to reducing wastefulness of our natural resources. Adapter - Input : AC adapter 230VAC, 50 Hz - Output : 12VDC - 500mA - DC car adapter : 12V Using an adapter that does not meet these specifications could damage the charger or the adapter. [. . . ]