For the price, it is good enough. I get quite enough for a flight from Los Angeles to New York, and it is a whale of a lot better than the one hour I get from the factory battery and a whole lot cheaper than an approved battery.
I have had this battery in service for a couple of months now, and I would say that it has performed just as well as the original. I wouldn't hesitate to buy this again.
Arrived on time, in good condition. The extended capacity is definitely worth the cost/weight if you ask me. All in all.. amazing! Get one.

