Why do they put a USB connector on these things? When they tell you that you can use it for charging, but recommend that you don't? Just got my first 3 batterie mod, and I get how great they are, but miss my passthrough capability. Now I have the external charger instead of that and that's fine. I guess my point is that it's frustrating that they would sell anything with an option that is less safe to begin with. Just had to vent lol. Your thoughts please.