[. . . ] Insert the batteries size AAA/R03, AA/R06 or 9V/PP3 into the charger compartments, taking care to observe polarity (+/-) as indicated inside the charger. [. . . ] If charging 4 AA or AAA batteries at a time, place 2 batteries in the front of the charger and 2 batteries in the back of the charger. To charge AAA batteries, flip down the contact brackets before inserting the batteries. When charging 9V batteries, place the battery on the front of the charger into the plugs for 9V batteries while observing polarities. The LED indicator light marked "front" represents the charge status of the batteries placed in the front of the charger, and the LED indicator light marked "back" represents the charge status of the batteries placed in the back of the charger. Le voyant lumineux portant la mention « front » indique l'état de charge des batteries placées à l'avant du chargeur, et celui qui porte la mention « back », l'état de charge des batteries placées à l'arrière du chargeur, tandis que le voyant situé à l'intérieur du compartiment avant indique l'état de charge de la batterie 9V. Do not expose the charger to high temperatures or allow moisture or humidity of any kind to come into contact with the charger. The charger should not be used by children without supervision, or by disabled persons where the disability could prevent compliance with safety recommendations. Children should be supervised at all times to ensure that they do not play with the charger. [. . . ] Never use an extension cord or any attachment if not recommended by manufacturer. [. . . ]