Contact your local DeWalt tool repair shop for a charger for B&D 15.6v charger. I just picked up one from DeWalt Authorized Tool Repair, 540 South State College Boulevard, Anaheim, CA 92806
(714) 772-4050 ($15.00)
Note that the chargers will burn out if you keep them plugged in longer than 3 hours! I have had to replace mine twice in 2 years. I now use a plug in timer to ensure it does not overcharge.