[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 ...

In this case he tailored the charging circuit around ... We’ve been unhappy with the use of disposable coin cell batteries for some time. Sure, in a real-time clock where the cell might last ...

Primary batteries exist in different forms ranging from coin cells to AA batteries ... Their chemistry alongside performance and cost vary across different use cases, for example, Li-ion batteries ...

Locate the CMOS battery, typically shaped like a silver coin. In the above image ... your BIOS settings and maintaining the date and time on your PC. As is the case with all cells, the CMOS battery ...

The waterproof case design and use of standard AA batteries lets an AirTage in the TimeCapsule 10-Year Battery Case keep tracking stuff for extended periods. Apple’s AirTag has proved an ...