Hello everyone. I just realized i'm getting really slow charging time when i plug in my smart. the other day I was at about 15% battery and the charge time was 17 hours, today i was at about 50% and the charge time says 9.5 hours, and that's if it's set to speed 2, on speed 1 its 11 hours. Has anyone had this issue, or knows what the problem might be? I use a new 10 gauge extension cord which runs about 75ft. Any help is appreciated!