Lots of snow. Equipment running great. Until now. While running the 149, the voltage meter indicated a slight discharge - about a half a needle width. When I pop the lights on, it deflects to a full tick mark left - indicating a bigger discharge. Normally, there's a charge indicating even with the lights on. I removed the battery (about 1yr old), brought it in and put it on trickle charge overnight. Started right up this morning but with the same meter indications. I tried to clear and dry off all voltage regulator contacts (thinking that there was a short developing from the blowing snow). Any suggestions?