My battery was working just fine this morning after charging all night. I needed to change my wicks and when I plugged the tank back in, the light came on for a half second and then nothing. Then the light wouldn't come in at all. I plugged it back in, said it had full charge, tried a brand new tank, thinking the old one had shorted out my battery or something - same problem (lights up a half second, then nothing). The battery is working fine as long as it isn't plugged in - it lets me switch from orange to blue, etc. And it seems to reset itself if I plug it into the charger. Any ideas on how I can fix this?