OK, today my 20 hp 2001 walker mower ran great. After 8 lawns in a row I shut down the machine. Wouldnt start, checked all the safetys, seemed ok. The starter relay would click but no start. Then it would start, no click. Shop said relay might be bad, returned and replaced it, now it seems like a dead battery. please, any help is appreciated. Battery is less than a year old. Tried charging it same problem.