This Duracell charger has a fairly simple design, and very simple, glossy black and matte. It can charge 2 or 4 AA or AAA batteries simultaneously. Quon damage can not load 1 by 1. It is said quen 4:00 batteries are ready to Employ, which means quen say 4 hours, the batteries are approximately 90% of their charge (with 1300 mAH NiMH AA batteries Duracell). However, there are 2 LEDs for 4 batteries, which are red when the batteries are not charged and green when the batteries are fully charged. Personally, I think that it is best to wait longer, and have fully charged batteries. AA batteries are easy to insert. To retrieve it, it is better to begin withdrawing the right to make it easier. Regarding the AAA batteries, they begin more difficult was the impression which are still poorly implemented. Looks like what wrong. The batteries are equipped with Duralock technology and batteries conserve energy lorsquelles are not used and can stay charged for 6 months.