The charger looks very nice, of course (although that is of secondary importance). The charger can be controlled by the processor single monitoring 4 AA, 4AAA or 2 AA and 2 AAA simultaneously invite the heights of one of the batteries from being overcharged (because the AAA are logically full faster). It invites the 4 2500mA battery in just under 4 hours. which is a very good value.
The duration of the batteries is enormous. I have just 4hrs in nem stress test. Can record Full HD video, only the battery level warning has been displayed on the camera. One can thus make loosely around 1,500 photos on a single charge.
For power hungry cameras, these batteries are perfect by high capacity and low discharge ... and in an emergency you can still access batteries. That is why a camera with 4 AAs a fixed Lithium-Ion battery is preferable by the way. ;-)