After the test I can say that both battery and charger are worth their money.
The battery corresponds in dimensions and capacity exactly to the original, and costs while significantly less.
The charger turns out to be universal energy source that can be operated not only as the original at 220 volts, but also to 12 V (vehicle electrical system) and USB.
The charging current is certainly much lower than the Nikon-device: only flow 300 mAh, while the original musters whopping 1200 mAh.
The automatic shutdown after charging worked in all versions of the power supply (220 V, 12 V, USB).
Conclusion: The battery is just as usable as the original in the camera, while the charger is indeed much more flexible, but has a relatively low charging current so that charging takes quite long.
For the price, the set is but worth a total of a recommendation.
