Small Engines (Lawn Mowers, etc.): MTD yard machine going through many batteries too quickly??, briggs and stratton, tractor model

Question
I have an MTD Yard Machine Lawn Tractor model (13AS695H372) with a Briggs and Stratton I/C 18.5 TwinII engine -- Model (42A707) Type (2238-E1) Code (9803185A).  My problem is that the tractor is going through batteries very quickly, that is, I cannot get a battery to last more than 5 to 10 starts before it will no longer turn the engine over with enough force to start the Mower.  If I jumpstart the mower from my car or buy a new battery the mower starts right up and runs very well, but as time goes on the battery does not seem to be getting recharged when the engine is running.  Why would I be going through batteries so quickly?  Is the battery not charging when the engine is running? Could it be the starter? Not sure what part to order to fix it?  Can you help.

Thanks in advance,
Tony


Answer
 Hello Tony:

 The Stator (charger) is Not Recharging the Battery. I havent Looked up the Engine so it Mayhave a Voltage Regulaor. If it Does this needs to be Checked First, Before the Stator is Replaced. Hope this Helps.

 Good Luck

 Respectfully

 John