Ohh I love mech mods and carry all my batteries in empty metal Altoid tins in my pocket.Personally I HATE MECH mods.
1. They don't have the safety features of regulated mods
2. When you hit the fire button it delivers as much power as the battery has. I hate hot Vapes and despise my wicks burning because the mech is delivering too much power
3. The battery power falls off rather quickly.
4. Faux hybrid mech's where the 510 sits on top of the battery.
5. If the 510 PIN of the Atty doesnt protrude enough you have a hard short.
I just say NO to mech mods.