It may be too late, but I was just thinking, (or the MacGyver in me was) my other hobby is RC planes, I have 2 multi chargers for lithium batteries and have in the past used them to charge other appliances such as leaf blowers and portable charging units.
Looking at my XSI battery, if I was in your position, I would take 2 T Pins, or large needles and insert them to the slots on the battery and then hook up alligator clips to them. Then I would set my charger to Lion @ 7.4 volts and 1.5 amps.. Then BAM, it would be charged in roughly 20 minutes.
So if your still around town, you may be able to find an RC hobby shop around. I think Hobby Town is open Sundays.
That's what the MacGyver in me would do at least.
Best of luck and sorry for your troubles...
Kenny..

