In a vape, the battery works with the chipset (if there is one), the coil, and your settings. The chipset regulates power output and often includes protections like over-discharge cutoff. The coil turns electrical energy into heat. Your puffing style determines how often the coil draws power.

So when you're evaluating a device for your shop, look at the whole package. A high-mAh battery in a poorly designed device might not perform as well as a mid-range battery in a well-regulated one. Check for a reliable chipset, good build quality, and consistent output.

Use the Windbar Vape Battery Calculator to see how different combinations of mAh and wattage affect run time. Plug in the battery capacity and your wattage to get an estimate of hours or puffs. That's the practical way to compare devices before you stock them.