I did something similar by mistake. The battery was too big, and when I popped it into the charger, the positive contacts broke away from the charger housing. Now it's in a landfill somewhere.
There goes that idea. ;-)
After scouring the area for 24 hours for any sort of a temporary solution, I've finally resolved myself to having to wait another 3 days for a charger to come from BatteryJunction. Talk about 'full of suck'...
Why is it that places like Radio Shack don't carry anything compatible with 16340's? God am I frustrated. =]