I had a problem in Jan/Feb this year like you have and it turned out to be my original battery terminals (they had become conical shaped over the years) I suppose from removing to reboot or clear a cell. They apparently were only making good contact with the battery terminal near the top and "coned" away from the terminal going down the battery post. I put new terminals on (regular style ones from advance/autozone??) and haven't had a problem since.
[SIGPIC][/SIGPIC]"If its fast and reliable, its not cheap;
if its fast and cheap, its not reliable;
if its cheap and reliable, its not fast."
If love is blind, why is lingerie so popular?