I don't know if this will work, but it does a great job on cell phones. (Dropped mine in the river a few times) First of all is the this a bling battery or a standard?
If it's a standard, pop the ash cap off and put it in container of white rice, the starch should absorb the moisture.
I would probably use a high ball glass, put an inch of rice on the bottom, then put the battery in the middle of the glass, battery connector end down and surround it with rice so it's entombed.
Use the kind of white (Hinode or CalRose) rice you would put in a rice steamer as it has plenty of starch and let it sit in the rice for 2 days. As long as you didn't try and draw off of it, it probably didn't short out.
Hope that works......