Wall adapter. When I try to use the computer the light flickers. After that I went to wall adapter.
Is the heat coming from the top down or from the main body?
0.15Ohm is cart before horse IMVHO, with IR of cell and series resistance of cct and device, probably dissipating more power everywhere else than the vape-coils.
Glad to hear you have less heatproblems when opening the airflow.
Your set had a 2000 mAh battery: depending on the wall-adapter you're using it can easily take up to 5 hours to charge. Some of my chargers take 7+ hours to charge a 3000 mAh battery.
Charging it 3 times a day can be normal if you vape a lot. The tank you're using can use quite some liquid rather quickly. How much juice do you vape in a day?
Do you chain vape with it? Almost any mod will get hot if you do. Might try higher mg nicotine and vaping less.
If the body is getting warm, it suggests that the battery itself is the source of heat.
That is not a good thing.
The site states "We always strongly recommend testing the coils with ohm-meter before using them...".
I would be checking the resistance (certainly should be no short cct!!!)and possibly increasing the resistance.
Not sure about that device, but I assume that would mean buying a higher resistance coil IDK.
As for the charging, what current is the charger rated for, and is it a good make/model.