Batteries & Cartridge Mods. The 18650 (18mm by 65mm) battery is a size classification of lithium-ion batteries. If you have ever held one in your hand, you probably noticed it is the same shape, but a bit larger than a AA battery. AAbatteries by comparison are sometimes called 14500batteries, because they have a 14mm diameter and 50mm height. In this case, these are specifically used to power the box mods for your vape devices.
EVOD batteries feature the most advanced eGo technology. They operate on a constant output of 3.7 volts all throughout each discharge cycle to ensure a consistently powerful vape from full charge up until your battery is completely drained. These are specifically popular to use with cartridges.