The wattage a mod can reach is dictated by the limits of your batteries. These are dependent on battery size and chemistry, but as a rule of thumb, a good 18650 battery can safely fire up to 75-80 watts.
Variable wattage batteries are the next step up from a manual battery. These allow you to increase or decrease the wattage provided by the battery, usually by pressing up/down controls. Mod devices such as the Smok Morph 3 are usually variable wattage, but may also have other functions.
Battery Safety: High wattage vaping puts more strain on your battery (ies) so if you are using an external battery mod make sure you purchase your batteries from trusted retailers as unfortunately fakes do exist which haven’t passed all the relevant safety standards and can result in the battery venting or worse exploding, it's not worth the risk.
A battery with a capacity of 1100mAh powering a 1.0ohm coil will be able to output 3.7 volts for longer than a battery with a capacity of 800mAh. However, both will output the same voltage. Battery capacity also depends on the coil used, as a lower-resistance coil will draw more power than a higher-resistance coil.
The best high-wattage mods on the market right now for battery life and clouds. The GEN MAX is the latest entry in VAPORESSO's popular mod line. It is a dual-18650 mod with a rotary control button, a lock slider, and a large color screen with three themes to choose from.
The battery capacity measures how much energy the battery can hold. This is measured in mAh (milliamps per hour). The battery voltage or wattage can often be adjusted and measures the amount of energy that is discharged. Can I use a wall plug to charge my battery?