This charging cradle is designed for Blackberry D/F series extra battery charger. It is compatible with Blackberry Storm 2 9520 9550, 9630, 9650. The FS-1 DX-1 battery charger is perfect for charging extra batteries for your Blackberry Torch 9800, 9810, Storm II 9550, 9520, 8900. It is a useful accessory for those who are always on the go and need to keep their Blackberry charged.