HELP!

I have a Sears Craftsman LT300 42" cut riding lawn mower. Currently it refuses to hold a charge on the battery. Sears has been of no use in this matter and only wants to sell me replacement batteries. I have checked all connections and wiring and fuses. All appear normal.

Any guidance from an expert would be greatly appreciated.

Bristol

PS. Sears in Savannah reps. Need not respond!