Ok so I've been going back and forth on getting the cool fire 4 plus with the apex
tank or the topbox mini.
I think I decided on the cool fire. But I've never owned a mod with a built in battery and I read that it has a excellent battery life. I'm just curious how many times can these built in battery be charged and drained before it has terrible battery life. I'm just curious because with the topbox once you battery life's not doing great you can always buy a new 18650 or whatever sozed battery. But with the cool fire you can't just buy a new battery.
Just curious if anyone suggest built in
batteries or not built in batteries more.