The charger that comes with your BlackBerry is good from 110-240v. YOU DO NOT NEED A TRANSFORMER FOR THAT.
I travel globally and have not carried a transformer in years. My laptop charger is 100-240; BB is 110-240. iPod is 110-240.
If you have lots and lots of adapters required, check out the iGo charging solution which works really well.
You will need plug adapters as stated in earlier posts.
You are over engineering this