Have brought 4 of those things for the toys of our child. The idea is very well done, then you need really just a charger and heap same Battarien to operate all play. The processing itself is very modest and does not seem to be too durable, let's see how it will show itself in the long run. The functionality is however ensured devices do what they are supposed to.
The reason the Enscheidung exactly for these adapters was just the price. It costs half the näcshten Wettberwerber Sanyo Eneloop.
So not necessarily recommended for the whole life, but does the job and therefore.