Originally designed for the clunky lithium 3V 1/3N size battery, this battery holder is easily adapted to accommodate (4) dirt-cheap CR1025 lithium batteries. The result is a small, inexpensive PCB ...

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 ...

In need of a portable power supply, [Alastair] threw some batteries into an Altoids tin. The problem was he didn’t have a holder for these size A23 cells. Inspiration struck and he realized the ...