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Ever since finding out about the Eight LR932 Button Cells Inside One A23 Battery, I've been looking for way to use these button cells. You see, I have plenty of used A23 batteries, because they are used in garage door opener remotes and car remotes. These used batteries can no longer power the remotes, but still have enough energy for other purposes.
The firearm laser sights seems to be good candidate to use these LR932 battery cells, because they don't draw too much power. The only problem? Most laser sights standardize on the bigger and thicker AG13 batteries, which is larger than the LR932 (see photo below). But I have successfully used the LR932 battery cells in two different laser sights. So this article will show you how.
The A23 battery has a seam down its side. Use a thumb tack to widen the seam. Then use a hobby knife or a pair of pliers to pull the outer shell apart. You'll end up with a bunch of LR932 button cells and other bits and pieces. Throw away the shell, but don't throw any other parts away. You'll need to use some of these parts for this project.
After taking apart several A23 batteries, you would end up with lots of metal parts (see photo below). These metal parts will act as conductive shims to make up the spaces that the smaller LR932 battery leaves open in the battery compartment.
For example, in the Gamo 650NM Red Laser Sight below, I used two LR932 to replace the two AG13 button cells. Then I used two metal plates back to back to make up the same in the battery compartment.
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