I called the dealer and explained the problem and they thought everything was normal but I took the charger and power pack to a local 'Batteries Plus' store and they tested them both and determined that the charger was defective but the pack was fully charged. But they did not have a 15 volt adapter and suggested Radio Shack, who had a 15VDC 1000mA adapter. It has no indicator light but they said it would put out more power than I really need. we tried it in the pack and the light came on bright green. I guess that's good but if it was already fully charged should the light be on at all? And will this particular charger in fact burn out my Nimh pack? The Radio shack clerk just sort of shrugged and said that it should not. In other words he really isn't sure at all. I bought it but would like some feedback before I try to use it myself. At least they have a 30 day return policy.