So, I had nothing better to do but setup a rig to test some mech mods based on the conversations here.
An Astron power supply as the main power source and connected it to a 1 ohm 100W resistor for one test and 2 1 ohm resistors in parallel for a .5 ohm test. Voltage reading was taken at the mod.
One problem I ran into was the regulator would not output over 6 amps at 3.7 volts into a .5 ohm load. It needed to be at a higher voltage, so I used 7 volts to output 13 amps of current through the mod. This is will come out to a load of about .3 ohms at 3.7 volts.
The testing is to isolate the mod itself and to get actual voltage drop and current flow and not be influenced by atomizer and battery resistance.
Note that firing the device with varied pressure, pushing the button to the side when firing, etc., causes voltage variations. The mod is fired multiple times and the most consistent voltage is recorded.
VOLTAGE DIFFERENCE BETWEEN PLATED AND PLAIN CONTACT PINS
Control device used was a Brass Nemesis because of its consistent voltage readings. Everything was used in the same manner with the exception of the different top and bottom contact. The brass contact originated from a plated clone contact with the silver plating stripped off.
The Nemesis silver plated contact was used as the control voltage as that had the lowest voltage drop.
Low current test:
Silver Plated brass (control) - 0 volts
Clone silver plated brass +0.004
High Current Test:
Silver Plated Brass (control) 0 volts
Copper -0.001 (better than silver plated brass, but .001 could be human error
Clone Plated contacts +0.003
Updated battery load tests:
I have developed a different procedure in testing batteries. I have made a battery holder from an old telescoping mod to improve consistency and accuracy in testing. A logger is used and samples 15 times per second, and the test duration is 10 seconds.