1. The promised in advertisements 30 hours values far from being reached
2. The charge time is considerably longer than in "normal" rechargeable batteries A ++ (batteries)
The recommended charging time is between 4 - 10 hours. We have charged the batteries always within the prescribed period. Time 4 hours 8 times and 10 time hours. The result was always the same disappointing: only 30 - 45 minutes of playing time. The warning that the charge of the batteries becomes low, often came after 20 minutes.
What we see also a disadvantage: The charging station is connected via USB to the Wii or to the PC. So if you want to load z. B. overnight, then either the Wii or PC must remain on all the time.
We are now back to traditional rechargeable batteries (batteries) returned.