A hybrid is a any mod that uses either a disc or a proprietary pin rather than a 510 connection to connect the battery tube to a rebuildable dripping atomizer or a genesis styled rebuildable atomizer tank. These discs or pins have a larger surface areas than the small disk inside of the 510 connection. This makes the voltage drop much less than any 510 connection mechanical mod. Voltage drop is important for people whom are using their mechanicals without a kick, because we need voltage to be consistently above 3.5 volts until the battery is fully drained. A 1 ohm coil needs to be at around 3.5 volts or higher to produce a satisfactory vapor. If a mod is experiencing a .50-.80 voltage drop, then that means when the battery is at half-charge, the battery's internal voltage will have dropped to 3.6 volts naturally... 3.6 volts would be fine, but then you have to minus a .5 volt voltage drop, which = 2 volts. This means that you'll be wanting a fresh battery just halfway through your battery's charge. This is unacceptable to most $100-200 mechanical mod owners, and most hybrid mod owners. This is why there are expensive mechanical and hybrid mods. For the confidence in knowing your getting something that does NOT have a high voltage drop. Because the bigger the voltage drop, the less time you'll get between charges. Its 1 thing if you have a half volt voltage drop in your mechanical mod that takes an 18650 battery, but if you've got a half volt drop in a mod that utilizes 18350 batteries, your going to need a new battery in 3-4 vapes.