So, do I need to buy a special attachment to accommodate the 18650? Or can the stock Persei/8Vape accommodate a single 18650?
The standard Persei (or 8) can accommodate a single 18650 or two 18350's stacked. You'd use the included battery adjustment tool to adjust for the different battery combinations, as shown on Page 3 of the Persei's
Instruction Manual. No other accessories are necessary to run 3.7 or 7.4V with either of these battery setups, other than the vaporizer, cartridge, and the batteries you want to use.
What are the advantages/disadvantages of running the different voltages?
Higher voltages provide more power. Some devices need this higher voltage to operate, like our Hammer rod (and Bender Herb Chamber) and the Hercules which comes with a 7.4V heating rod. Other devices can operate at both 3.7V and 7.4V like our KISS carts. In these cases, the lower voltage provides less power and less heat, and higher power means more heat. Each different accessory and/or cartridge would have it's own usage characteristics, so we can't make blanket statements regarding "all 3.7" or "all 7.4". For example, a Gen 3 KISS cart used at 7.4V should be pulsed with 1/2 second or shorter bursts; while a Hercules at 7.4V can have the power applied for 10 seconds at a time.
What type/brand of 18650 is recommended?
We suggest and sell only
Andy Wong brand batteries. There are users that report using other batteries with success, and we aren't here to discount those reports. Our official stance is we recommend only AW. Particularly when it comes to 18350's, we have yet to try any better cells with the Hercules and AC at 7.4V than
AW 18350s.
What other types of batteries are compatible with the 8vape casing?
It can accommodate any battery or battery combination that fits inside. It has an internal diameter of 18mm. Some batteries that may fit: 2x CR123 (W9 Tech does not sell any cartridges that would use these batteries), 2x 18490/18500 (when the included shorty tube is combined onto the standard tube) 2x 18650 (by combining another tube) etc.
What accessories work best with what voltages?
Some accessories only work at certain voltages, like the KISS Globe lineup that works only at 3.7V. Some accessories work with a multitude, and we offer them in different varieties for different people's preferences. One person's "best" might not be the same as another's. We have found that most people prefer the Hercules at 7.4V and that's why it comes packaged with a 7.4V rod, but some people's best rod is the Black rod for use at 3.7V.
Many people like KISS carts at 3.7V since they're easy to use and hard to make taste anything other than great. Other people's best power is 7.4V because they like pulsing power in short bursts to achieve quick, thick hits, and have good technique to keep flavor awesome; or don't mind occasionally going a little hot.
I'd be happy to help out with specifics here if you let me know which item/items you're looking at. We have a large variety of cartridges/attachments available, if you let me know what you're trying to accomplish and what your priorities are when it comes to vaporizing I'll be able to help you better than listing 20 different combinations.
What version of the Persei is it that is currently being sold?
Version 3 is what is for sale at w9tech.com
What attachments won't fit this version of the Persei?
Every attachment we have ever made in 601 mod threading will fit this vaporizer. The only known issue we have is some of the dual coil Alpha Centauri coils and Gen 3 KISS carts have issue at 7.4V due to voltage drop sensitivities. We are manufacturing a new top to fix this issue.
What cart is best with each respective voltage?
Again, sorry I can't answer this question as "best" is subjective.
What cart is best if you are running dual carts with a 3.7v?
2.4Ω EO carts.
What carts work best if you are running dual carts with 7.4v?
5.0Ω EO carts.
The only Persei that ever came with a dual cartridge top was the Version 1 Persei, and the only cartridge that you can use on the dual-cart top are our original EO carts. All cartridges introduced since then will not fit side by side due to space constraints.
Take the Persei SS kit. It says "might not fit Persei V4". "Might" not? You aren't sure?
That's correct. It might not, and we aren't sure. There's a variance in SS kits' fitment, and we cannot guarantee they fit V4 tops. We don't suggest people with V4 tops purchase SS kits, and caution current owners of SS kits of using their V4 top on them. We don't have a Version 4 Persei listed on our website, as it's only something that comes up in the course of me helping with a repair.
Please understand that simply asking me these questions will not only help you get them answered but help the next round of people 'after you' that need answers. I have been working on a database of product information for the last few months based off frequently asked questions on phone calls and support tickets, and I am totally in agreement that more information should be available on the website.
All you have to do to get this fixed is contact me, ask questions, and I'll help out. Allow me to help you and I promise I can reduce your frustrations.