Much long charge

I've bought these batteries because they almost cost no more than "normal" batteries. Because my charger indicating the charged mAh, I can say to all the other benefits in addition to all of these batteries (I NEN 8-pack) also store more than the specified 800 mAh. After discharge in the charger all invited to more than 900 mAh, sometimes even 1200 mAh. The "weakest" invited themselves to use the MP3 player again with more than 800 mAh in (ie the charger discharges slightly more than the cut-off in the MP3 player, but also in the "real" operating the specified capacity is more than achieved).