Utillian 5 (V3) Vape pen

I have a Utillian 620, I like speed in which it heats up, check-out your warranty, mine states you can’t use more than a 1 amp charge rate. This is my third the first and second died from over heating while charging, until they told me you cant use more than 1 amp. On mine the battery is right behind the PC board causing it to fail if it gets too warm.