I have the 2amp NiMH charger (#2977). Today I tried to charge my 7.2v 1800 mAh battery that I only use for my easy start. Everytime I plug it into my car I get a solid red light, plug the battery in and it stays solid read for about a minute. Then it blinks red, I've checked and changed the fuse and it's still the same. Is my battery pack fried? I've only had it for a summer and charged the battery maybe 8 times. It sat all winter long but inside my house. What am I missing guys/gals.