this post was submitted on 21 Oct 2026
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Get the batteries out and wipe the electronics with a soft towel soaked with a little vinegar to neutralize the corrosion. Then a damp towel with just water to get the vinegar up. Let it fully dry before putting in new batteries. This happens to batteries that have sat unused for a long time installed. It can also happen if at the end of charge, you pull the batteries out, and put them back in to squeeze a little more use out of the batteries. Do it too many times and there is a leak risk. Cheaper batteries do it more often but the top brands will occasionally leak as well.
I found an old plush that had a voicebox in it... I've not touched it in 25+ years but wanted to show it to my daughter, so I pulled out the battery box, expecting the worse, and there was no corrosion at all. I pulled out the generic brand batteries and put in new batteries and it started speaking.
I was amazed.