You've seen the number on the box: 350mAh, 500mAh, 800mAh. It's easy to think bigger is always better, but that's not the whole story. mAh tells you battery capacity, but how long a charge actually lasts depends on your puffing habits. A heavy user might drain a 500mAh battery by lunchtime; a light user could stretch it over two days. So before you compare numbers, ask yourself: how often do I vape?

For CBD-compatible hardware like the WINDBAR SPECTRUM series, most devices fall in the 350-650mAh range. That's plenty for a day or two of moderate use. If you're the type to chain-vape while watching a movie, lean toward the higher end. If not, you're just carrying extra weight.