Not sure if "if you're not gonna subohm any battery is fine" is a good advice.
Regardless of the mod, you'll need a decent high drain battery.
A zmax has a max current output of 5A. MANY protected cells are gonna cut you off between 3.5 and 5 amps. Unless you can find a higher one, protected cells are just a bad idea, given that the mod itself has short circuit protection.
Brands like Panasonic or aw would be idea. But Efest should be fine.
Avoid any battery brand with a "fire" in it (eg trust fire). Those are NOT really high drain batteries
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