LR44 batteries are a particular variety of button-cell battery. You've almost definitely ... like pocket calculators, laser pointers, children's toys, and perhaps most commonly, watches.

This article will delve into the exciting world of making kids’ toys with a laser cutter, exploring the materials, design considerations, safety precautions, and project ideas to get you started ...

"This provides a cost-effective and fast way to tune battery performance," says Bayhan. The researchers made an anode from the laser-scribed material and tested it in a lithium-ion battery over ...