These measurements are a ball park figure. I used Sanyo Eneloop NimH AA batteries with the passthrough.
My voltage and ohm measurements are accurate. But due to my battery holders and connections my current measurements may be off a bit. However using ohm's law we can figure out exactly what the current will be.
First I tried this with 3 batteries. The no load voltage of the batteries was 3.9 volts. When I took a puff off of the passthrough, the voltage dropped to 3.15 volts and the current drawn was 875ma's. The vapor was acceptable but not nearly as good as when I went to 4 batteries.
With 4 batteries the no load voltage was 5.20 volts. When I puffed on the passthrough the voltage dropped to 4.30 volts and the current measured was 1.180 AMPS. Vapor was much better.
Next I measured the resistance of some cartomizers. The Menthol Cartomizer measured 3.3 ohms while the rest of the VK ones I have measured 3.1 ohms. The blanks I have measured 3.4 ohms.
Using ohms law we can calculate the amperage since we know the battery that comes with the VK has a nominal voltage of 3.7 volts. Keep in mind the VK has a li-ion battery and while I do not know all the specs of it, the voltage will not sag as much as it did with my Nimh batteries.
Ohms law is simple.
Ohm's Law
To calculate the current we take the Volts and divide it by the ohms. So since we are using a battery in our VK's with a nominal voltage of 3.7 volts, and most of Steve's carts are 3.1 ohms, the current would be equal to 1.2 AMPS.
If I would have had better connections with my test, with 3 Nimh batteries I would have been able to pull about an amp and with 4 Nimh batteries I would have been pulling 1.39 AMPS.
I tried to find the USB specs for my laptop but came up with zilch. I know it has to be at least 1.5 AMPS because the passthrough works very well on it. But I use a hub when I need to....can't risk blowing my laptop.
So to summurize, we really need a power source with at least 1 amp for an acceptable vaping experience. If we go too high, then we end up going through fluid much quicker and risk burning the cartomizer. We have the sweet spot with the current batteries we are using, and I know the longer VK battery is going to be more consistent before it needs recharging, however the standard Auto or Manual batteries are surprisingly consistent since we are beating them up....
My voltage and ohm measurements are accurate. But due to my battery holders and connections my current measurements may be off a bit. However using ohm's law we can figure out exactly what the current will be.
First I tried this with 3 batteries. The no load voltage of the batteries was 3.9 volts. When I took a puff off of the passthrough, the voltage dropped to 3.15 volts and the current drawn was 875ma's. The vapor was acceptable but not nearly as good as when I went to 4 batteries.
With 4 batteries the no load voltage was 5.20 volts. When I puffed on the passthrough the voltage dropped to 4.30 volts and the current measured was 1.180 AMPS. Vapor was much better.
Next I measured the resistance of some cartomizers. The Menthol Cartomizer measured 3.3 ohms while the rest of the VK ones I have measured 3.1 ohms. The blanks I have measured 3.4 ohms.
Using ohms law we can calculate the amperage since we know the battery that comes with the VK has a nominal voltage of 3.7 volts. Keep in mind the VK has a li-ion battery and while I do not know all the specs of it, the voltage will not sag as much as it did with my Nimh batteries.
Ohms law is simple.
Ohm's Law
To calculate the current we take the Volts and divide it by the ohms. So since we are using a battery in our VK's with a nominal voltage of 3.7 volts, and most of Steve's carts are 3.1 ohms, the current would be equal to 1.2 AMPS.
If I would have had better connections with my test, with 3 Nimh batteries I would have been able to pull about an amp and with 4 Nimh batteries I would have been pulling 1.39 AMPS.
I tried to find the USB specs for my laptop but came up with zilch. I know it has to be at least 1.5 AMPS because the passthrough works very well on it. But I use a hub when I need to....can't risk blowing my laptop.
So to summurize, we really need a power source with at least 1 amp for an acceptable vaping experience. If we go too high, then we end up going through fluid much quicker and risk burning the cartomizer. We have the sweet spot with the current batteries we are using, and I know the longer VK battery is going to be more consistent before it needs recharging, however the standard Auto or Manual batteries are surprisingly consistent since we are beating them up....
