Credit for my methodology goes out to LuxLuthor at CandlePowerForums, namely this thread which taught me my technique: REALLY Simple Guide To Figuring Out Voltage In Maglite
It will explain the method of calculating resistance based on measuring voltage drop under current load better than I can, so if you wish to read it, it's short and very informative with much carryover into ecigs.
For this test, I will be using an SS GGTS (A couple months old and gently used) with an AW 2900mAh 18650 protected Li-ion battery and debridged standard (2.3ohm) 510 atomizer. Measurements will be taken by an Electro-Tek digital multimeter purchased from Wallmart several years ago.
To begin, I cleaned the electrical contact points of the SS GGTS with 91% isopropyl alcohol. I first cleaned the fuse post inside and outside and fuse spring ends. I then cleaned the positive and negative battery posts as well as battery terminals. Finally, I disassembled and cleaned the switch assembly and also the threads of the GGTS engraved body tube that the switch assembly screws into. I refrained from cleaning the contact point between atomizer and connector assembly as I will not be placing anything that is not food grade (Namely the DeoxIt Gold later on) around the atomizer draw holes.
Next I measured the voltage of my battery at rest, the current draw of the SS GGTS, and the voltage to the atty under load using my digital multimeter. The following pictures help show how I achieved these measurements.
I tested resting battery voltage like this (pretty tricky to take this picture by myself).
This is how I measured the current draw. I removed the GGTS brass telescope and completed the circuit with the leads of my digital multimeter. A bit tricky to keep pressure on the battery and multimeter leads, but doable. I pressed the GGTS button for maybe two seconds and recorded the highest number, which rapidly started to decrease as the atty heated up.
I tested voltage to the atomizer under load like this. This was tough to execute. I pinned the negative lead of my DDM between the draw control ring and top cap. For the positive lead of the multimeter, I put it touching the side of the atomizer coil and pinned next to the ceramic cup. I pressed the GGTS button for a couple seconds and recorded the highest voltage the atty peaked at.
The following are the baseline measurements of my SS GGTS after cleaning electrical contact points with alcohol:
Resting battery voltage: 4.09 Volts
SS GGTS current draw: 1.28 Amps
Atty voltage under load: 2.99 Volts
Next I cleaned all the electrical contact points with the DeoxIt cleaning spray and then applied the DeoxIt Gold conditioning and sealant spray. I only applied the DeoxIt gold to the same areas I had just cleaned with alchohol so as to maintain the uniformity of the test.
The following are the measurements of my SS GGTS after application of DeoxIt Gold:
Resting battery voltage: 4.08 Volts
SS GGTS current draw: 1.32 Amps
Atty voltage under load: 3.38 Volts
Based on these numbers, there was a voltage drop of 1.10 volts from the battery to the atomizer due to internal resistance before DeoxIt Gold, and 0.70 volts after the application of DeoxIt Gold, so as a result voltage to the atty had improved by 0.40 volts.
Based on voltage drop and current draw, there was an internal resistance of 0.859 ohms before DeoxIt Gold, and 0.530 ohms after it, so internal resistance was reduced by 0.329 ohms
Based on atty voltage under load and current draw, the atomizer was drawing 3.83 watts before the Deoxit Gold, and 4.46 watts after it, so wattage had increased by 0.63 watts
I would say these are pretty positive results. Results may vary of course
