#20
Right out of the box, I got 2.2-2.3v under load readings (28awg 0.6ohm, this very RBA/build measured very well on KTS gold/chrome)
After swapped out the spring with a madvapes Silver coiled spring, sanded/cleaned 510 seat, post and battery contact, got much better measures, but still not close to the gold/chrome.
efest 18350
0.6ohm 28awg
no load: 4.02v
RBA posts, 3 readings: 2.92 2.97 2.95v
loss: 27%
2.5ohm 32awg
no load: 4.02v
RBA posts: 3.54, 3.55, 3.50
loss: ~12%
panny 18650ch
0.6ohm 28awg
no load: 4.18v
RBA posts: 3.21 3.17 3.21
loss: 23%
2.5ohm 32awg
no load: 4.18v
RBA posts: 3.74, 3.75, 3.74
loss: ~11%
I shined a micro LED flashlight through the holes on the head, the copper/brass spring and rods look clean and make firm contact with button pressed. I wonder taking it apart would help much...
Vape is nice but rather smooth on the full charge. For me, 5ohm on 28awg might work better.