eGo/eGo Style – A style of fixed output e-cig battery in self contained unit with better performance than a cig-alike, but with some of the benefits of a larger device. Usually uses a fixed output of about 3.3 volts, or variable up to 4.2 volts. Comes in different sizes and capacities from 600 mAh to 1600 mAh utilising a non-replaceable internal Li battery. Sometimes uses a propriety threading 'ego-style' connector rather than a 510.
Joye eGo-T was a device originally marked by Joytech in 2011, that later became synonymous with a particular style of device the same way that Hoover became synonymous with vacuum cleaners.
I advanced onto an eGo style system from cigalikes in 2012 and I can clearly remember (at the time) them being brilliant, at least compared to a cigalike. I quickly got frustrated with the lack of power, runtime, and the non cost-effectiveness of a disposable self-contained system.
The term mod originates historically from vapers
modifying flashlights or other battery boxes to power atomizers. It has now become associated with
any device used to power an atomizer, other than a cigalike.