https://www.adafruit.com/product/4856?gclid=Cj0KCQjw7aqkBhDPARIsAKGa0oIbOIBqo0qC8m1mE3ereVHevyMPUDo-WHT75Gg7me8aEMJAV0OteTEaArTKEALw_wcB
Single CR2032 / 20mm Coin Cell Battery Holder with Switch : Adafruit Industries, Unique & fun DIY...
This tiny coin cell battery holder is ideal for small portable or wearable projects. It holds one 20mm coin cell (also known as CR2032) in series to generate...
coin cell battery holder