How do I remove corroded and swollen batteries from a flashlight?
Posted: 12/30/2009 15:22 EST
A small flashlight that takes doubles As is hardly worth the hassle, unless it's a mag-lite. If it is a mag-lite, unscrew and remove the butt cap, then unscrew and remove the head assembly. Now you are basically left with an open ended cylinder with the batteries stuck inside. Spray some wd-40 in both ends, let sit a few minutes, then push the batteries out with a flathead screwdriver. Once the batteries are out, use a stiff bristle brush (like a baby bottle brush) and wd-40 to thoroughly clean the interior of the flashlight, springs, and contacts.
If it's a cheap plastic flashlight that only opens at the head, you can drill a small hole in the butt-end and use the same method as above.
A small flashlight that takes doubles As is hardly worth the hassle, unless it's a mag-lite. If it is a mag-lite, unscrew and remove the butt cap, then unscrew and remove the head assembly. Now you are basically left with an open ended cylinder with the batteries stuck inside. Spray some wd-40 in both ends, let sit a few minutes, then push the batteries out with a flathead screwdriver. Once the batteries are out, use a stiff bristle brush (like a baby bottle brush) and wd-40 to thoroughly clean the interior of the flashlight, springs, and contacts.
If it's a cheap plastic flashlight that only opens at the head, you can drill a small hole in the butt-end and use the same method as above.