I only charge up every week unless I have a long trip planned. This past 3 weeks it hasn't needed a charge and fired up instantly when I took it out of the garage to give it a thorough clean and silicon/wax treatment.Have you left yours without charging for 3 or 4 days? Mine was fine up until a month ago when I left it without a charge for 4 days. It was dead. I think I got mine about the same time as you.