question about voltage drop.

[AnonynousHaze]

Mech mod is a Sig 20 with a 3.7 volt panny battery (multimeter tested avg at 3.7 volts)
Atty is an RSST 28 gauge 2/3 wrap on oxidized 500 stainless steel mesh running at 0.9ohms

when i attached the Sig20 with the RSST i get 2.17 volts, from the original 3.7 volts, thats a 1.53 voltage drop whats going on and how do i fix this?

also im not tech savvy, so if you care to explain would you be so kind an do so in simple terms. thx

 

[tmcase]

3.7v with a .9 ohm atty would put you in the megawatts range. I'm not familiar with these mechanical mods but it seems it has some kind of protection for too high of voltage and lowered it so it wouldn't short out your mod. I didn't think mech mods could do this but the only other reason for such a large drop in voltage would be a small short somewhere. Hopefully someone more mechanically inclined will come along and help you.

 

[Hoosier]

Voltage is the product of current and resistance. You've given us the average voltage, 3.7, and the measured resistance, 0.9, what we don't have is the current the battery and the device is capable of handling, but it can be calculated. From the numbers you have given, the current your setup is capable of is equal to the the loaded voltage divided by the resistance or I = 2.17 V / 0.9 Ohms = 2.4 Amps at the output of the device.

This could be due to internal resistance in the device itself or the the protection circuitry of the battery or possibly a combination of the two. If your device's internal resistance is about 0.6 Ohms, then everything is working as it should. If your battery protection circuitry is cutting off the current flow, you have increased the possibility of battery failure. All this assumes that your measurements were taken correctly and the act of heating the coil does not cause the wick itself to become a parallel resistance.

Note that if the device had no internal resistance and the battery was capable of supplying the current needed then you would be vaping at 15 Watts on average and nearly 20 Watts on a freshly charged battery which is approximately triple of your current vape. A mechanical mod will always have some amount of internal resistance, but since I am unfamiliar with the materials and construction of your mod, I have no idea if 0.6 Ohms is high or typical or low.