AAA to AA battery adaptor by Blippy 3d model
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AAA to AA battery adaptor by Blippy

AAA to AA battery adaptor by Blippy

by Thingiverse
Last crawled date: 3 years, 4 months ago
This thing is a sleeve for AAA batteries so they can be used in devices requiring AA batteries. You also need a small amount of Aluminium foil or similar to scrunch up and shove in the bottom to form the contact.
I have portable phones that are always on charge around the house, and my kids always use the AA batteries without ever recharging them, so this way I can simply put flat AAA's into a phone and use the charged ones in my AA devices.

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