When it’s time to cut the grass, you want your lawn mower to be in good working condition. The lawn mower may have a lead acid battery or a nickel cadmium battery. Although both are rechargeable, they will still need to be replaced on occasion. The best way to find out is to consult the operator’s manual for your model. If your lawn mower is running slowly or strangely, it might just be time to change the battery. Follow these steps;

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How to clean lawn mower battery?


Turn the key on your mower to the “Off” position. Turn off all lights or other electrical devices.

Locate the battery. Remove the tie down strap, if any, or Unscrew the retaining bar that covers it.

Inspect the positive and negative terminals for corrosion. Scrape any corrosion off the wires using a stiff wire brush, or mix baking soda and water to make a paste.

Dip a brush in the paste and scrub the corrosion off the battery terminals and cable ends if they are badly corroded. Also, rinse and wipe clean.

Loosen the negative cable clamp (marked with a minus sign) using an adjustable wrench. Furthermore, install the battery terminal clamp.

Loosen and remove the positive cable clamp (marked with a plus sign).

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Pull the battery up and out of the metal case holder. Moreover, place the new battery in the metal box holder. Replace the cable clamps over the terminals and tighten with the adjustable wrench, making sure the negative cable end is on the negative side of the battery. Thus, reattach grab bar or tie strap and tighten.

Tips and Warnings

The positive terminal of the battery is always larger than the negative terminal of the battery. Nickel-Cadmium batteries should not be charged until fully discharged.

Do not use the mower without securing the battery down in the bracket.

how to change lawn mower battery

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Riding Mower offers expert mowing tips and tricks for keeping your garden or yard healthy. Find out the reviews, comparisons, and buying guides for all kinds of electric, gas, or riding lawn mowers.

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