I absolutely need this battery to power the pen of my HTC tablet ... impossible to find on the market, even in supermarkets and in photos and similar shops. I found and ordered on Amazon a few pats on my tablet ... delivered in 24h chrono. Obviously the cost of the port is greater than the cost of the set of 2 batteries, but that was not the problem and anyway I would have spent more on transportation to get me to Paris (where, by the way?). Overall a great Amazon Service ...