This article is a clone of an ever updating article from http://electronicecig.com Written by Aaron Griffiths and reprinted by permission. For a Completely Updated Version of this Compatibility Guide: Click Here.
If you know what type of battery and carts you are trying to match up, you can get an adapter to fit:
The E-9 Style or Two Piece Designs
The E-9 style is one of the most popular styles because of it’s ease of use and two piece design. Unlike the three piece ecigarettes that have a separate atomizer, the E-9 style has the atomizer built in to the disposable cartridge. The “E” stands for “electric” and the “9″ refers to the 9mm thread pattern. I would recommend this style to anyone who is new to the world of ecigarettes.

E-9 Brands That Are Compatible With Each other
Some companies that provide the E-9 style are:
Green Smoke – They sell exclusively the E-9 style and they do it right. In my opinion this is the best company out there. The product is top quality, the customer service is un-beatable and the free shipping is super fast.
Smoke 51 – They sell two different styles, one of them is the E-9 style. They call it the Duo because of the two piece design.
E-Cig Brand – They offer many different styles, One of them is the E-9 style. This company probably has the least expensive ecigarettes but you can only order them directly from china. They also offer a simple starter kit for $19.95 if you are curious about ecigs and want to try them out without spending a lot to begin with. This kit comes with 1 rechargeable battery and two cartomizers. You can buy a charger later if you enjoy the ecig.
E-Smoke Brand Sensation Ecig – E-Smoke brand sells two different styles of electric cigarettes, one of them is an E-9 9mm style ecig that they call the Sensation. This is fully compatible with all of the above ecig brands and the shipping and customer service is top-notch! I can recommend buying from E-Smoke.net
The Mistic E-Cig is an E-9 style electric cigarette as far as I can tell, they did not respond to an email.
That pretty much covers what I know of about the E-9 style and which companies provide them.
The E-8 or 8mm Style
The E-8 style electric cigarette is nearly identical to the E-9 model ecigarette except it has a smaller thread pattern and a slightly smaller, lighter weight battery.
Here are a couple of different brands of E-8 8mm style electric cigarettes that I can highly recommend:
Premium Electric Cigarettes – The Premium Electric cigarette is one of the highest quality electric cigarettes on the market, we only endorse the highest quality ecigs. They sell an awesome 8mm E-8 style ecig and all of the coolest accessories that go with ecigs, including a portable charging case, a really neat portable pocket sized starter kit, the coolest unique battery colors, They also sell Electronic Cigars.
E-Cig Brand E-8 Style Electric Cigarette – E-Cig Brand is the original designer and developer of the ecigarettes with the cartomizer technology. Their E-8 Model is nearly identical to the E-9 Style Electric Cigarette. E-Cig Brand is the only company in the world that will let you choose the battery color, cartridge color, battery tip color and also the battery light color. They also feature the lowest prices in the world by far and the shipping is surprisingly fast from China, Every time I have ordered it has come in only 5 days.
E-Smoke brand sells an E-8 style electric cigarette that they call the PRO ecig. The E-8 style is exactly like the E-9 except it is just a little smaller in diameter and therefore the battery will hold just a little bit less of a charge. This is why the E-8 style has the optional PCC or personal charging case that you can buy either as part of a starter kit or separately.
E-Smoker Online Brand offers their own version of the E-8 generically known around the net as the KR808d-1. This kit comes with everything you need to start and of course they also offer the PCC portable charging case as an extra accessory. This PCC is different than the one offered by E-Smoke. This PCC is the exact same one that is sold by Premium Ecigs.
VaporNine has a version of the E-8 style electric cigarette that they call the Nebula. They offer a couple of different starter kits including a deluxe kit and an express starter kit. They sell 8 unique flavor cartridges for the Nebula Ecig.
Dragonfly DSE901 This is one of the first e-cigs to come out with a Portable Charging Case. Although the battery shares the same thread pattern as the KR808D-1, it is usually sold as a 3 piece ecig.
South Beach Smoke Deluxe Ecig - This is a very high end company. Lifetime warranty and they usually have some kind of cool promo like $100 in free gas.
V2 Ecigs I saved the best for last in the E-8 category. The V2 Electric Cigarette is your standard 8mm thread pattern battery that is compatible with all of the above with one amazing accessory that you will find no where else, (well for now, no where else. Somebody will catch up soon.). V2 sells some really awesome universal adapters so you can use any brand of E-8 style cartridge or cartomizer on just about any Battery! This is just one of the things that makes V2 E-Cigs an industry leader. It is difficult to get any other company to even tell you what type of battery they use, but V2 wants your esmoking experience to be joyful and easy.
Volt Ecigs – This is an e-8 battery I think?
The Trio or Three Piece Designs
The three piece design is the second most popular design. The difference from the two piece design is that they have a separate atomizer, unlike the duo design which has the atomizer built into the nicotine cartridge.

Trio Brands That Are Compatible With Each other
These are some of the three piece designs that I know of that will work with each other:
The Blu Ecigarette – This ecigarette is a really good ecig but not the best customer service as far as I can tell. If you have a Blu kit then you can get more carts and batteries from Eluma because they are practically identical.
Eluma Brand Electric Cigarettes is definitely one of the best companies on-line to purchase a 3 piece electric cigarette kit from. Their kit is very nice looking and this is the only model they sell so they can concentrate on doing this model right. They sell the complete kit that comes with the PCC and they also sell a “Simple Starter Kit” that comes with only the bare essentials. This simple kit would make a good starter kit if you were not sure if you really wanted to go with this style or it would make a perfect gift for any tobacco smoker.
Smoke 51 Trio – The Smoke 51 Trio is another high quality three piece ecigarette. the starter kit comes with everything you need to start vaping and even includes one extra nicotine cartridge.
The Luci Ecig – Yet another high quality three piece electric cigarette. They offer four different versions of their starter kit, each with different amenities.
The Instead eCig – Instead is one of the only companies that sell their kits with e-liquid so that you can refill the cartridges. Most of the other companies just want you to buy the pre-filled cartridges.
Model 510s and eGo Electric Cigarettes

JOYE 510 pcc Electric Cigarette Starter kit

JOYE eGo PCC Starter Kit
I lumped together the 510 and the eGo because they have the same thread pattern on their batteries. Pretty much any cartridge, atomizer or cartomizer for a 510 will fit onto a standard eGo battery. That doesn’t mean that every one will work perfectly, but if you were in a pinch, you could use it.
The really cool thing about the 510s and eGos are the wide variety of cartridges and cartomizers.
There are the normal cartridges that need an atomizer. And there are some variations on even these standard parts. Then there are the cartomizers like the E-9 and E-8 style. Then it starts to get interesting with the T-tanks and the Clearomizers. There seems to be constantly evolving hardware for these types of ecigs and probably best suits the experienced or dedicated user.
The Dragonfly ecig – Is one of the top distributors of 510 ecigs and eGo style electric cigarette kits. They have everything you would possibly need for those styles of ecig and constantly have clearance sales.
E-Smoke Brand Electric Cigarettes Also carries an eGo style electric cigarette kit. They call it the eSmoke Tank Starter Kit, It will fit any cartridge made with the 510 thread pattern.