The Tiny Lemon Battery, and other designs for zero cost electricity and led light without batteries

Step 8 The MICRO lemon battery

This is by far the smallest lemon battery at all. I came to this design wondering how can I redce the size and still have a lemon battery capable of making a led glow and still using very poor materials from scrap or household junk ;)

It is made by 4 micro cells.

Each one is a 0,4 mm long piece of zinc wire, with some tissue paper around it, and a tiny piece of copper around the paper.

The cells are put in series and soldered directly on the pins of the Led.

A drop of lemon juice will activate it for an hour. make sure that with this size the paper of one cell doesn't touch the paper of another one.

I have included two views from a 3d cad, for better reference on how to assembly it.
Purple balls are showing where you have to solder.

Comments

[dombeef]

Wow, nice job!