Walk behind mower - (madison county in Lexington, KY

I have a walk behind Gs30 john deere mower it does run very good but it does have some problems with the mower part im not sure what is wrong with it i thing it needs a new chrgeing sestem and it does have a wireing problem the last time i used it i hit something and the blade broke off but i do have two other blades that goes with it othen than th