http://www.fr.eneloop.info/qu_est_ce_que.htmlPortable: alimentation sur la prise USB
If you're bringing a laptop computer anyway, the eneloop USB charger could prove attractive when travelling because of its small size and low weight, as well as the fact that no cable or adapter is needed for power. A short USB cable that stores neatly in the side of the charger lets power be drawn from your computer, and the charger itself isn't a whole lot larger than the batteries - just 3.7" x 1.9" x 0.7", and weighing 1.7 ounces. Charge times are relatively slow at just under five hours to charge two eneloop AA batteries or two hours for a pair of AAA cells, but would be fine for overnight charging.