I bragged last week how well my PM did in a few single digit days up in N. Va. over the weekend. I spoke too soon. After sitting about 4 days in single digit temps at night here in SE Va., it died on me this morning as I tried to run some errands. Jumping didn't work. I believe the battery was absorbing it faster than the starter could get power. So I have it on a 20 amp charger now. I'll try it again in an hour. It'll be warmer then too. That'll help.