Battery Case for Hearing Aid Batteries (312 Brown) as a Keyring

Made ist lighter and as a keychain. Used Chicargo screws with a 5mm nut-side and a distance of 5,5mm. there is a detent for a small spring and ball so that it stays in place

Text from the Original:
I have a friend who uses hearing aids for both ears.

That is why he always keeps some batteries with him. The package is thin cartboard and plastic and when carried in the pocket they can fall out.

The batteries gets activated when the brown flip gets pulled off, so it is important that they stay on there until needed. They still have a minimum of Voltage and if they touch like when they fall out in the pocket they looses what they have and won't work.

So I made him this. It fits 8 Batteries and fits nicely in the pocket. Only the middle turns, buttom and lid are fixed together.

I Made this for the Type 312 Brown (look at the pic of the package).

On the blank part of the middle part I wrote his name, but I left it out for the shared on.

Feel free to use and share it - I only have one request, If you print it for someone who need it, don't let them pay for it.

I used an M3 sink-head 10mm screw to put it together. The is room for a small spring and 2,5mm ball, and detents in the lid if you want it to snap.

I added the Designs for the Type 13 Battery as well.

Be good!