I see the samsung 25r 18650 batteries are maxed at 20A CDR but maxed at 35. 2 For 13.20 not bad
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After looking at your build photo here are some ideas try doing a centered build so that the coils sit directly in front of the center post When you wick the build make Sure that the cotton isn't tucked under the center of the coil this will allow airflow under the coil which helps to keep it cooler when run at higher wattage and also helps with vapor production. Center the airflow of the outer barrel of your atty directly in front of your coils and don't be afraid to give a pretty hellatious pull on that thing. You want to be up on your wattage around 70 or so and you should be rocking.
See how the area under the coil is exposed it produces kick ..... clouds and great flavor I'll post a video in a couple minutes
here's a video of how it performs at 70 watts
I use two VTC5s that are married in the device or while charging. I've never split them up. My current e-juice is 80%VG/20%PG.
And just where did you manage to find VTC5s?????? There haven't been any REAL VTC5s on the market for almost a year!
Glad I could help and good luck with future builds you can Personal message me anytime and I'll help if I can.
I 4 of them that I got 18 months ago if they go bad I think I'm going to run Samsung 25R or MNKE exclusively. Efest are over rated a buddy of mine actually had a set vent on him in a mechanical box he built and he is electrical savvy too he builds amateur band radio boards power inverters and stuff like that so he understands amperage and voltage so when he built the box he did it right with all the proper protection for the switch etc and yeah Efest went poof. So no purple batteries for this guy
Its ok, i share your skepticism on the purple efest batteries. I've heard mixed reviews on them thats why i tried to get VTC5s cuz i heard they were one of the best.
There are few vendors that have legit VTC4's in stock, I listed reputable vendors in my first response to this thread.
No need guess & mess with re wraps.
I wouldn't put an unknown battery in a mechanical, some of the fake vtc5's have tested as low as 10a cdr.