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These Rainbow V3 atomizers are the best ones for sure. I also have a couple Phoenix rebuildables and the Rainbow V3 is much nicer. Been using mine for a couple weeks now. Really happy with them. Again, my only complaint is the second air hole. There's no reason for it to be there and it...

I have a gripe about this atomizer. Though the build quality is notably better than the Phoenix, the two I received from Stormy's Vapor Cellar have a tiny air hole drilled in the bottom of the middle piece in addition to the larger top air hole. It's hard to notice because it's in the slot...

20C cells are nice, usually have ample drain capability even for the smallest cells. They're bigger than their 2C or 10C counterparts though.

Yes, you can skip CVM since it only accounts for a small percentage of the overall charge capacity. If you took the time to view the rather long video, that's explained in some detail.

There's two primary modes for Li-Ion chargers CCM and CVM. The charger runs in constant current mode all the way up until it hits the voltage limit of 4.2V. That's when it switches to constant voltage mode where current begins tapering off. For CCM, you can divide out the charge rate into the...

I don't know why people have such a hard-on for LiPo cells. They're no more volatile than LiCo cells. I think they get a bad rap becasue the RC guys work them hard with no protection and blow them up a lot. They're plenty safe enough when properly protected. After all, they are used by the...

Volume for an 18650 16.5 cm2. Volume for a 26650 is 34.5 cm2, a little over double. The best protected 18650 has around 3000mAh so a comparable 26650 should have around 6000 mAh. The charge density is not very good for that cell, about the same as an IMR cell. You'd do better to run two...

Interesting, you can actually buy production vaporizers for "smoking tobacco" other than the ones we use for vaping. My brother-in-law uses one so that's how I know about them. I guess you were ahead of your time.

The production variable output mods most basically consist of a switching converter and a micro-controller. The theory behind switching coverters is as old as the theory behind transformers (really old), but switching converters weren't widely used until silicon chip technology made it...

Unlike the PTR series, the OKR-T series do not require input and output caps. They are already on-board. People add them anyway, but the converter will work fine without them.

Thanks, Nichrome wire is good for making a small down and dirty very low value resistor. Just splice some 20 to 24 AWG inline with the normal run.

Actually, as an electrician, you may find working with low voltage DC stuff much simpler. You don't have to concern yourself with things like power factor, phase angle, and RMS currents. What you see is what you get. Ohms law will cover you for 90% of what you want to do and you can just wing...

The "stacking batteries" stigma comes from people stacking 3.2V cells *without* protection and the resulting safety issues. Stacked protected cells are no more hazardous than a single protected cell. As slimest said, laptop computers have used stacked Li-Ions for decades, and they stack four...

Interesting, wouldn't have known that. Not really clear, which are the ones that work?

It's always better to buck than boost. With buck, it's like a motor going downhill, with boost it's like a motor going uphill. The big advantage with boost is it allows you to use a single cell which is highly convenient for built-in USB charging. Functionally, you get better performance with...

This discussion of Alkalines peaked my curiosity so I did a load test on a brand new Duracell AA battery. I found voltage sags 150mV with a 1A load which is 150mΩ internal DC resistance for the cell. I've measured AA NiMH cells in the past and they are close to 100mΩ. So, with a nominal...

Thanks Killjoy, I was going to mention primary cells (such as Alkalines), but I took it for granted everyone knows it's impractical to drive an atomizer with them. The main reason being it's too expensive. A 4 pack of AA duracells is like $7 or something. That will get you a day or two of...

14500 Li-Ion cells are the same size as AA batteries. 10440 Li-Ion cells are the same size as AAA batteries. 26650 Li-Ion cells are the same size as C batteries. You can also use NiMH AA batteries to build a good e-cig mod. That's discussed ad naseum in the forum here (the Puck). They...

Sounds like you're getting it all sorted out. Good to hear things are coming together for you. Have fun!

That's the tricky part. For a single cell, you can easily make a cutout with a voltage detector and a MOSFET. However, voltage detectors are not available with high enough trip points for two or more series cells. I could be wong, but I have yet to see any over 4.5V. You have to come up...