Price-performance okay ... but ...

... But many differences!
What some review here, is simply wrong. A statement like "is the original in every way" I can not represent unfortunately. The original lasts me for about 1 week in duration use. Compared to batteries offered here which is about 3 times as much, as this stand.
Unfortunately kept the favorable replacement batteries 2 to maximum 3 days. A plus point is however, that they can be correspondingly fast and recharge. As quickly as they are empty, they are full again. Nevertheless, clear differences are seen in the performance.
Conclusion:
Who has his camera in continuous use, but only for a few snapshots, operated with this battery is more than good. They are cheap, hold for a few photos a long time and can be loaded quickly. Who, however, always and everywhere carries his camera itself is not operated with 4 of these batteries because the power just is not enough.
Nevertheless: The price-performance ratio is right, if you consider that an original battery by Canon will cost 4 times!