If you need the flexibility of an extra battery, you will appreciate the options this external battery charger gives you. 

There's no need to keep your Blackberry phone plugged in while it's charging - simply swap one battery for a fully charged replacement and you can take your phone wherever your busy day takes you, while your first battery recharges. 

With a separate USB port that allows you to recharge both a spare battery and your Blackberry phone simultaneously, this is the ultimate charging accessory. 

Requires a compatible MIni-USB mains charger, similar car charger, travel charger or mini-USB cable connected to a PC via USB. 

Charger will not operate with a micro-USB charger supplied with current BlackBerry phones. 

Go to this listing to purchase the authorised BlackBerry mains charger:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=261046463823#ht_1129wt_778

Charges the following Blackberry batteries: C-S2, C-X2 and C-M2

Compatible with: Blackberry 7100g, 7100i, 7100r, 7100t, 7100v, 7100x, 7105t, 7130c, 7130e, 7130g, 7130v, 8100, 8110, 8120, 8130, 8300, 8310, 8330, 8700c, 8700f, 8700g, 8700r, 8700v, 8703e, 8707g, 8707v, 8800, 8820, 8830, Pearl 8220 Flip, 8520, Curve 8900, 9300 Curve 3G