Mine is cold as ice always 
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0003 here. Test passed.
Are guys vaping while testing? Would hate to burn up a good coil.
Just tested mine with a 1.6Ω coil with a wet wick for 15s twice in a row at 15w. Then again w/o the wick. The mod didn't even get warm.
Tested the crap out of mine (0003xxx) with no problem or much heat. Feels good to have some peace of mind.
Question...does this new info mean anything regarding use of onboard charge port? I never have, but the desire to will eventually arise
Really should test it at 30w.
Mine is 0004. Tested at 15w and again at 30w. All seems good here.
Makes me feel a lot more comfy. Which is good, because it feels so damn good in hand. Glad I will be able to use it as I want to.
I think it has more to do with the hot glue they're using to hold everything in place.
Would love to hear the theory behind this. Having used Hot Glue in hundreds of applications over a period of beyond a decade I can't see any reason.
You have a non conductive material injected in a low temp semi-liquified state and cooled. There is no Expansion/contraction of significance and the hold is minimal at best.
The glue cannot be causing a Thermal insulating heat failure or many more would have fried, mine included. I have had mine so hot from chain vaping as to have to remove the topper and set it aside to cool a bit.(hot in hand) No functional issues have arisen.
I have to stick with one of two theories.
1) Limited run of product with a defective board - IC chips/Processor/Regulation/etc. defective.
2) improperly trained/unsupervised/uncaring employee incorrectly assembling units leading to Board Flex Failure.
Either/both could lead to a limited run of defective units.