I bought the heavy duty pack for 35 dollars but I think you can buy a cheaper version that just covers a couple of models.

The package that i got came with over 20 different extensions to fit most any type of cell phone including the blackberry.

If you have some good energizer re-usables this is an invaluable tool when your on the road or camping etc. I take it with me when I go to girl guide camp in case of emergencies.

They have several options including solar panels and a nice hook up for your ipod as well. They also have a warranty (according to their website) that offers new tips if the manufacturer changes their charging style and your kit no longer supports it.

I highly recommend this product and its totally worth the cost. This has saved my butt a couple of times.