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· Premium Member
87 Posts
First off a car battery is probably not going to fit, and 2nd the car battery probably will not last long on a ride on mower as the shaking and tossing around is death to a car designed battery. Then there is the issues of heat and it is a problem for a car battery. The car battery is designed to get air around it from the front of your car and it generally is located near the front of your car where it is coolest and has the best air flow to dissipate heat from charging. The other issue is a mower is designed for a smaller battery so the charging system can properly charge the smaller battery, putting in a car battery will not charge properly on a mower and it will wear out the alternator on a mower.

So my advise is hit K-Mart and get a good lawn mower battery.
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