This charger is much better than my old model, lighter, more compact and more powerful. Duracell proves once again his capacity as a market leader. This charger allows you to include up to 4 batteries simultaneously, each benefiting from LEDs independent charge of others. I say "up to 4 batteries" because, in fact, if you put in charge of 9 v, the model allows to do the work on a single battery (hence my withdrawal of a star in the assessment, also with a disappointment on the design). Accepted battery sizes are AA AAA (the ones I use most) CD and 9V. It is supplied with charger (classical) and is accompanied by a beautiful 7-year warranty.