Source: cmbatteries.com Have you ever noticed that some batteries have names that look more like secret codes than simple labels? Here’s a fun twist—what if I told you the name 18650 isn’t just a random model number but a clue to exactly what that battery is physically? Next time you’re tinkering with electronics or shopping for replacement cells, understanding what those numbers mean can save you time, confusion, and maybe even a mistake that leaves your device powerless. Understanding...