I bought this charger for the simple reason because I think that one should exploit the advantage of a removable battery definitely. If you take more than one day on the road, or phone the evening his times forget to hang on the wall socket, this charger is unbelievable since one battery total of 6440 mAh can carry with them. This is even with a normal second battery possible, but it is annoying to only recharge the batteries if they are in the phone. Looks very classy and is well made. Therefore 5 stars.