How To Clean Battery Corrosion In Toys. Use a paper towel to dry the area and remove any build up then set the toy aside for several hours. A video showing how to clean up the corrosion or leaked acid from small batterieslike AA AAA C D or 9 Volts.
A wire brush is ideal but an old toothbrush will also do in a pinch. Dip a cotton swab or old toothbrush into the solution and saturate the corroded areas of the battery case. Use a paper towel to dry the area and remove any build up then set the toy aside for several hours.
Then remove the batteries and set them aside.
Any remaining residue can be removed with baking soda and a tiny bit of water. Use a Q-tip to. Lemon juice or vinegar are both great options. Next add a little to each terminal with a small paint brush or something similar.
