Bought this a month or so ago and just realized its the wrong battery. I'm guessing it's for a newer Gopro but not sure which one. I have the Hero 3+ and this battery won't fit. You can see on the pic that it has a small tab on one side that sticks out about a eighth of an inch. If this is the style that would work for you I'd be glad to send it your way if you can use it. It's never been charged or used, I just opened the package without looking too closely.
Shoot me a PM with your address if you could use it. Not sure when exactly I'll be able to send it as I'm still tuna fishing every day but I should be able to drop it in the mail at some point soon