[alancw3]

possibly corrosion on the battery terminals. also loose battery terminals that retard the charging of the battery. sitting for 10 days. i have a car that sits for long periods w/o running and then sometimes runs for a brief period. the battery does discharge. i finally bought a deltran "battery tender junior" at walmart for $35 which i plug in and keep the battery fully charged for the weeks i don't drive the car. car batteries need to be kept charged. boats use a "deep cycle" battery that is designed to go long periods w/o charging. if it were me i would try a battery tender before going to mechanic. just saying!