I bought this product and it arrived much earlier than I anticipated. Furthermore, I would recommend anyone that owns the SGN2 to buy this as it is definitely a time saver. I can't remember when the last time I charged my phone using the usb cable was, since I simply pop one battery in for another. Furthermore, I believe that just by shutting down your phone once a day or even a day and a half, is something which makes the phone run much better and smoother, since apart from adding a fully charged battery, your phone gets a proper reset with regards to the RAM memory of the phone. I am looking forward to my next trip as having two fully charged batteries opens up a world of new possibilities - I can watch all the movies I want and when I arrive at my destination I could always pop in a fresh battery. Lastly I must say that when you are on the road, it is not always possible to charge your phone, therefore having an extra battery has an added benefit.