Before we get into it, we’ll explain just what box mods are and how they’re different from your standard entry level vape kit. Essentially, the name comes from the shape of the mod itself. They’re usually boxy and, unlike most vape pens and pod kits, can be purchased on their own and can be paired with a multitude of tanks that can be removed and switched out. They’re larger than entry level kits, owing to the fact they have more battery and a more advanced chipset (the little computer that makes the mod itself work). Some box mods have an in-built battery but plenty have external batteries - usually 18650s that you put in yourself.
With more battery comes more power too. So, your little vape pen might have around a 900mAh battery for around 30 watts of power but a lot of box mods with in-built batteries will have twice as much battery life and output. These days, the heavy duty options you can get can often fit a couple of 3000mAh batteries and fire all the way up to 200 watts and above.