Note: it is ONLY compatible with side-loading CR2032 battery holders like the one in the photo! It will not plug directly into top-loaders, though you can solder wires from the Coin Cell power board to their tabs.

What is it?

This is a USB powered coin cell board. Plug in a 5V USB source at the USB-C connector, turn the top switch to ON, and select 5V or 3V power to your badge with the bottom switch. Plug the thicc Coin Cell Power board directly into the side-loading CR2032 holder on your badge! Each board comes with one JST PH cable so you can daisy-chain multiple Coin Cell Power boards and badges together.

Why did you make it?

We wanted to be able to have PCB displays that could light up without having to go through a bunch of coin cell batteries. Not only does it take time to change out batteries once they die it is also very wasteful. We made the Coin Cell Power board to make displays for our soldering kits at conventions, which we could power from a single USB battery bank. Now you can add fixed power to your CR2032 badges too! Also useful for badge makers to test your assembled badges.

What makes it special?

With the coin cell power board you have the option to use 3V or 5V. You can also daisy chain the board together to create a cool display of all your PCBs. Each coin cell power board also comes with an ON/OFF switch. Go to Hackaday for more information!

PCBs fabricated by PCBWay