The Eneloop USB Charger is a really small compact charger for the road. It is intended to maximum 2 AA (Mignon) or AAA (Micro) batteries are being discharged. The charging time is at an AA battery good for 2 hours at two AA batteries just over 4 hours. In the AAA battery, the charging time is at a cell at one hour and at two cells in the two hours. I tested it with the respective passenen Eneloop battery. During charging a blue Leutchdiode attached in the white plastic casing under the flashes. When the charge was completed, this LED lights up permanently. When not using the charger, the USB charging cable you can practically in the housing in a recess provided plug, and the USB connector cable is perfectly stowed. The cable itself is not really long. There are ~ 10cm. The cable is also connected to the charger. From the design and functionality of the charger me really convinced. It is not a charger that "fast times" a battery loads, but for the way where you do not want to carry around a bunch of devices, it is really perfect, because it is very small, and good functionality. Of the known me on the market USB battery chargers of the Eneloop is after already having the best in my opinion. Sanyo stressed in the instructions to the charger that you should use your device with Sanyo batteries ONLY (!!). This is what I wanted to have mentioned only as an indication.