Size 13 Hearing Aid Battery Keychain (Magnet lid)

This is a keychain for holding size 13 hearing aid batteries.

I use a 6mm round magnet to hold them together, it should fit in the center hole and put some thin CA glue to make sure it stays in.

Holds 4 batteries.

The thinner tab version is just to make it easier to put on regular key chains. I use the metal link ones for these. You will need supports for the thin tab one.