Impeccable in Nikon D7100

Bought the battery was in June 2013 for a D7100 as "effective replacement battery" for emergencies.
Seitedem he has (as of February 2015) almost 10,000 trips behind - the original battery was namely the replacement battery. I wanted to "expensive" conserve! Only yesterday I had at an event 600 photos shot with it (and he was far from being empty!), Filmed over two months ago and a half hours in full HD (Then it was empty). For me, the battery TOP!
Charging: Easily.
Mechanical: Stable and precisely. Not jammed, does not wobble.
Lifetime: Excellent!
Self-discharge rate: Negligible.
Battery indicator of the camera: Like the original.
To function in the battery grip, I can say nothing, but should now (since early 2013) function.
The next will again Patona / Bundle Star.
After one and a half years "testing time" I see no reason to spend twice for an original.