Found no difference from the original

I bought the battery for my Sony A57 and in this camera, it fits just as good as the original battery. With regard to the capacity I can only say that to me anything negative or no difference to the original battery is noticed when I took also this no measurement series.
Processing both the battery and the charger I find very good. The manufacturer-specific adapter that must be plugged into the base unit, is located very precisely and firmly on the same. Here one can not speak of cheap goods quality definitely. The only thing that surprises me is that the original charger has 3 contacts on the battery pack while the Star Bundle has only 2, that is, the middle is missing.
How secure for many others was an incentive to buy the charger at 12 V for me - connection can be operated in the car. I've even tested, so although not tried full charge. The 12 V - vehicle plug is also and he is very well located in the socket.
The charging via a Micro-USB charger (eg for current mobile phones) as well as via a standard USB cable (USB A connector), for me was not so important, it certainly works both.
I'd buy this package especially considering the low price the next time once again.

Summary:
+ Very good workmanship
+ Fit like the original
+ Proper functioning
+ 4 connections (esp. In the car)
+ Excellent price / performance ratio