Believe it or not, the coin cell battery holder was invented over 30 years ago. Patent drawing for the first coin cell battery holder. Since that first model was used, there have been plenty more ...

Everyone loves, and should respect, lithium-ion batteries. They pack a ton of power and can make our projects work better. I’ve gathered a number of tips and tricks about using them over the years, ...

Over the years I have replaced coin- and button-cell batteries in countless products and have had to fix or improve the marginal battery holders used in many of them. It’s understandable but ...