Hi, this and the “barely enough” answer refer to the battery’s max. (continuous) discharge current, which is quite low. Although the momentary discharge current is usually a bit higher (this is how we vape, with short loads), it’s not good to max it out, because it can heat up (significantly), and over time, as it wears out, this amperage value also decreases a bit (the datasheet provides values for a brand new battery), starting a vicious cycle, heating up even more, wearing out even more.
I also vape MTL, but I don’t buy batteries below 25A, better safe than sorry. There are many videos online already about what a small battery cell can “do”.
I just thought I’d explain in more detail because you mentioned you had devices with built-in batteries until now.