Me too.
They seem well made and last just about as long as the stock battery.
It's nice not having to be so conservative with my phone use, knowing I have another battery in my bag if needed.
I heard that Samsung somehow made the Charge smart enough to know if the battery is a Samsung bat or not..if not and the bat is of any other clone of the charge bat, the ph will not charge the bat or even work with the charge.. keep this post active with yer reports of bat names ,, cloned or whatever.. as i am interested also.