I would strongly recommend getting a battery extender charger. It uses 4 AA batteries and will charge your BB to full in under an hour. It is very compact and you can pick up AA batteries anywhere! I find it great when I am traveling and I don't have access to a car charger/ wall outlet or USB port. (i.e. when on a train, bus etc.or simply when I want to have a full charge without carrying other charging apparatus) It also charges my Motorola rechargeable bluetooth headset which also takes a USB mini plug to charge. Several are available on EBAY. I picked up one at pocket solutions for under $13 and I am more than pleased!