Last fall I shut the gas off of my Tractor and ran it till it stopped. OK, but I forgot to flip the switch to off when it quit running. This tractor ran great and started right away, at least last year. Battery was dead and would not take a charge, I guess after the battery went dead it froze last winter. I bought a new battery, yes it works, and put it in expecting it would start right up, still nothing, not even a click, checked the connections, good. Is there anything else that would have been ruined by leaving the battery on all winter? Is there anything else I should look at or check? Thanks!