The Wonderful World of mods: An Illustrated Guide
Prologue
I have just completed (finally) the long mods section of the updated and enhanced Version 2 of my Wonderful World of Vaping – residing on CyberWolf’s and my new website, VapingGuides.com. It wound up taking on a life of its own and I realized that it might make a good set of posts for Eric’s and my home here on ECF.
What follows assumes a general knowledge of vaping and an understanding of what the heck a “mod” is. [For a refresher on that, check out Part II (The Hardware) of my WWV V2.]
Introduction
If you would like to puff for a long time between battery charges and/or want maximum vapor and throat hit…

…(and don’t care if it doesn’t look anything like a cigarette...

Clockwise from upper left: Copper, AdapteveR, Bulli, Zimoshi (not to scale)
...and are willing and able to invest more money upfront), then one of the Mods is for you. [I don't recommend them as a first e-cig, however. They can be wonderful to evolve to, perhaps even quickly. I got my first mod after one month of vaping.]
These all have a manual switch. Mods can cost 2-6 times as much as a standard e-cig, but (the battery housing) can last for years, rather than weeks or months.
[NOTE: The term, 'mod', is also used to describe modifications to other parts of personal vaporizers (e.g., carts, attys, mouthpieces, and cosmetic) and to hobbyist creations. Those are covered in Part VI. Here we are concerned with battery mods available for purchase (e.g., for lazy and/or thumb-fingered vapers like me
CAUTION
As we have previously mentioned, these battery mods are housings for generic batteries ... and some batteries are safer to use than others. It is strongly recommended that you use only "protected" batteries in your mod. Such protection can be in the form of a PCB (printed circuit board) built into the battery and/or the battery's chemistry (e.g., LiFePO4 or LiMN is safer than Li-Ion).

Also ensure that safety features such as venting are built into the mod itself ... especially if you will be stacking batteries (which increases risk). Some manufacturers/suppliers (e.g., AltSmoke) explicitly warn customers against stacking batteries in their mods. Unfortunately, many vapers ignore this warning and/or use unprotected batteries. Fortunately, most have not had problems, but accidents do happen and there have been a couple serious ones.
Myriad Choices
Unlike the models in the preceding categories, most commercial battery mods are not mass produced, but are handmade in the modder's workshop (e.g., kitchen table or basement) or manufactured in small production runs. So not nearly as many units of any one model, but in the intervening year since I wrote version one of this guide – and more than any other category – there has been an explosion in the number of models to choose from. There are now over a hundred ... many with capabilities only dreamed of a year ago.
Fortunately, I don't have to enumerate all of them here (although I did wind up covering most
What I will do here – in narrative form – is offer parameters to use when selecting among mods and provide examples (including up-to-date prices and links to relevant suppliers) with, of course, lots of photos.
Parameters
Mods can be categorized by:
Also in that last post is a Mods Wrap-up providing suggestions for putting this all together when making a purchasing decision.
Next up: The Shape of Mods.
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