wow... DC"s! at 6v... i know that's a kick.
Didn't know AW had 3v batts!
btw, Provape has a new 18650 2500mah that they recomend now for broad spectrum use and long lasting
Hey Uke, this explains the DC Cartos pretty good::
Ohm’s Law –
I = V/R Amperage = Voltage / Resistance
Full voltage is applied to both resistances within the circuit. Resistance is determined by:
R = V/I
In a parallel circuit the formula is:
R 0 represents total resistance. R 1 and R 2 are the 2 different coils in the cartomizer. So the resistance for a dual cartomizer would be
R 0 = 3.2 x 3.2 / 3.2 + 3.2
= 10.24 / 6.4
= 1.6 ohms
So the circuit of a dual coil cartomizer with two 3.2 ohm resistance coils has a total resistance of 1.6 ohms. What does this mean. It means you get a low resistance cartomizer that still works with higher voltages because the individual coils are working at 3.2 ohms.
Now lets compare the amperage of a cartomizer versus a dual coil cartomizer. (I = V / R)
Single Coil
I = V / R
= 3.7 / 3.2
= 1.16 amps
Amperage of a Dual Coil Cartomizer can be done 2 ways.
I 0 = I 1 + I 2
This would be the equivalent of calculating the amperage of each coil separately and then adding them together. So in the above formula 2 coils with like resistance would be:
I 0 = I 1 + I 2
=1.16 + 1.16
= 2.32 amps
The other way is with the formula:
I 0 = V / R 0
I 0 is the total amperage of the circuit and R 0 is the total resistance of the circuit.
I 0 = V / R 0
= 3.7 / 1.6
= 2.31 amps (Rounding accounts for the small difference)
The other comparison we can have is with power which is measured in watts.
W = V * I
W = V * (V / R) is another way of stating it.
So a single coil would be:
W = V * (V / R)
= 3.7 * (3.7 / 3.2)
= 3.7 * (1.16)
= 4.28 watts
A dual coil could be calculated by adding the wattage of each coil together like was done with amperage. Or you could just use the resistance of the total circuit like below.
W = V * (V / R 0 )
= 3.7 * (3.7 / 1.6)
= 3.7 * (2.3)
= 8.56 watts (as you can see it is exactly double the single coil figure)
So a dual coil cartomizer gives you twice the watts (power) and twice the vapor. If you use a cartomizer with too low of a resistance quite often it will damage the cartomizer because there is too much power for it to be able to handle it. But because each coil is actually running at 3.2 ohms of resistance a 3.7 or 5 volt source works just fine. If you go to higher voltages such as 7.4 volts the biggest problem is the protected circuit of the batteries. They often detect a short with such low resistances and the protected circuit is tripped. But if you had a battery with a protected circuit that could handle that low of a resistance, the cartomizers appear to work just fine without hurting the cartomizer or burning the e-liquid