is it safe to vape at .1 ohms with a sigelei 150 and vtc4 or Samsung 25rs
The sigelei 150w uses the Yihi sx330 v3s.
Yihi lists their chips specs on their site and it shows being able to fire .1Ω.
It is always a good idea to read the ' chip' manufacturers specifications before purchase to ensure it is suitable for your intended use.
To answer your question is .1 safe using the sigelei 150;
Yes, no, maybe, probably, give it a try some folks do. .
You will reach 150w at 3.873v using a .1Ω coil and stay under the 40a limit, not accounting for any device or connection inefficiencies.
3.873v / .1Ω= 150w & 38.73a ,
Wicking ability & airflow are going to be major contributing factors in if you enjoy the vape.
Just my opinion, you are relying on the QC & accuracy of a mass produced inexpensive electronic component gizmo to provide protection and to assess / determine a personal safety comfort level. ( inexpensive depending on quantity purchased)
Regulated APV's have minimum & maximum limits - volt, watt amp & resistance as part of the protection circuitry.
You cannot trick, fool or bypass any of them unless caused by a malfunction or your specific model has a mechanical like dc/dc mode.
Some flash an error code or other information via the display screen informing the user the settings they're using are below or beyond one of these limits and or won't fire.
Some report nothing on the display screen ( give no indication to the user) and automatically adjust to the minimum or maximum output possible that is within range of one of these limits and fire.
When using one of these type the display screen may show youre vaping at xx watts but because the users settings are under or over one of the min/max limits they are actually vaping at a different lower or higher wattage even if the display shows the user set xx watts.