I currently testing the Duracell charger 4 hours for charging AA and AAA. This pack was supplied with 2 rechargeable AA and 2 AAA which is very convenient. The charging case is very simple, black and very light unlike his ancestors who were quite heavy and the charger is really simple to use, just slide the batteries into the slot according to the size of the selected cells. Recharge time is respected, it is about 4 hours. Regarding the use of batteries recharged once, well I am fully satisfied because I have this pack nearly 2 weeks now and I could use the AA on a small very greedy musical toy belonging to my daughter usually there is a few days but that for now he holds out. For my AA in the test continues Wii controllers that consume too much and for now still need to recharge. So very happy !!!! A small nod to friends Want More !!!