Was watching one of my Favoirte youtubers.
and he was showing that it´s a fault with battery reversal protection when putting batteries the wrong way around.
If u put the batterys in the wrong way the mod will automaticly fire at full wattage of what the device can handle.
Looks like this conversation (from the day before the above video) was the point of origen (props to Mike and Local Vape for letting the community know):
EDIT: Not trying to “one-up” you btw, just adding info to hopefully credit the original source!