07 Dec '17, 9am

The Incredible Shrinking Coin Cell Battery Pack

The Incredible Shrinking Coin Cell Battery Pack

How’s it going with your project for the coin cell challenge ? You can only use a single one, but Hackaday alum [Jeremy S Cook] has a great way to package coin cells into a sleek little power packs whether you need one, two, or even four. [Jeremy] is building a wireless Wii nunchuk, so he needs a small battery that won’t short out or get punctured in the confines of the controller body. A single coin cell holder is already a bit bulky, and he needs to use two in series. He thought, why not try shrink wrapping them together? The only downside here is that the biggest tube that came with your average heat shrink multi-pack is probably a bit too tight to fit around them, so you might have to buy more (aw, shucks!). After trying a few ways to make a good connection between the leads and the bare coin cell faces, [Jeremy] settled on generously stripping stranded wire and wrappi...

Full article: https://hackaday.com/2017/12/07/the-incredible-shrinking-...

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