Hellvape Fat Rabbit Review: Top and Bottom Airflow

Product intro and specs

The most unique feature of the Fat Rabbit is its dynamic airflow system. It features airflow on both the top and the bottom of the tank, so you can pick one, or rock both of them. The tank is designed in such a way that whether you’re using the top or bottom airflow, the air is directed straight to the coil head. The Fat Rabbit utilizes a rather old school top filling system where you unscrew the top to reveal its massive fill ports. The tank holds 5 mL of e-liquid or 2 mL using the straight glass section.

The tank was sent free of charge by MyVpro for the purpose of this review.

Price: $24.95 at MyVpro
Colors: Gunmetal, stainless steel, rainbow, black (white logo), full black

Build quality and design

When I first took it out of the box, the airflow controls were extremely stiff. Then, I managed to crack the bubble glass within a few minutes of opening it. I accidentally overtightened the tank just trying to get the airflow port open. Be careful when assembling the tank so that doesn’t happen to you!

There was some glue residue on the tank and glass section when I received it. Based on other reviews I’ve seen, that’s pretty common with this tank. I was able to clean it off with alcohol, but I wasn’t too happy about it. If I paid $25 for the tank, I would have been even less thrilled about it. It’s actually really well constructed in terms of the machining, but Hellvape definitely dropped the ball in terms of quality control. The threads are nice and smooth, but the O-rings break fairly easily. I suspect Hellvape might be aware of this, seeing as they include a ridiculous heap of O-rings with the Fat Rabbit.

It also has a bit of girth to it, and weighs just over 60 grams. The tank is 25 mm in diameter, but it bulges out to 28 mm in the middle, or 32 mm with the included bubble glass section. I ended up using the 2 mL straight glass tube, which I am being a lot more cautious with. I’m surprised they didn’t go with an easier top fill system with some kind of slide or twist system though. The bubble glass holds 5 mL of liquid, versus the 2 mL capacity of the straight glass. If you switch flavors a lot, the 2 mL can work to your advantage because you will be refilling it quite often, especially at 80 watts. Also keep in mind that you can’t change the coil when the tank is full, so make sure it is relatively empty.

*Check the kit contents drop-down menu to see all included parts and extras

Hellvape Fat Rabbit coil heads

• 0.2-ohm H7-02 Single Mesh Coil - rated for 80 watts
• 0.15-ohm H7-03 Quad OCC Coil - rated for 80 watts

The coils go for about $10 per pack of three, which is a little bit more expensive than the SMOK ones, which cost around the same but come in packs of 5. There are currently two types of coils, both are included with the tank.

The mesh 0.2-ohm coils produce better flavor and last longer than the 0.15 quad coils. They are both rated for up to 80 watts and use cotton wicking. The tank allows you to see straight down the chimney to check on the health your coil. Especially with the mesh coil, you can really see when it starts gunking up and the cotton starts becoming darker. It comes in handy for knowing when your coil is saturated. From my experience it takes about five minutes and requires about five or six puffs to break in the flavor. Switching flavors wasn’t that bad, but there is a period where the last flavor will carry over, so you’ll have to plan your flavor transitions wisely.

Airflow

The draw is smooth and relatively quiet. It isn’t exactly silent, but it doesn’t whistle or anything and it isn’t very turbulent. The airflow adjustment was really tight when I got the tank, but after breaking it in, it’s actually perfect now. I would have liked to see knurling on the top airflow as well, but that’s not a big deal. If you’re using the device at its max wattage, the extra airflow comes in handy. For a restrictive lung hit, I like the top airflow closed off about half way.

The dynamic airflow configuration is innovative and all, but I don’t know if it was necessary. The whole point of top airflow is to prevent leaking, so it seems a bit counterintuitive to include both, but I give them props for trying something different. If you’re looking for an extra amount of airflow, you might appreciate the additional air slots on the top of the tank.

Hellvape Fat Rabbit performance

I used the tank for a little over a week and the only time I had any kind of leaking was when I was traveling with it in my backpack. It wasn’t anything major, just a few drops. I just wiped the tank with a napkin and I was good to go. I didn’t get any dry or burnt hits at all with the mesh coil, but the quad coils dip off in performance within a couple of days, to a week if you’re lucky. The Fat Rabbit isn’t a juice guzzler, but you can blast through 5 mL pretty quickly if you’re running it at 80 watts. You wouldn’t want to use the 2 mL glass tube at such a high wattage because you’ll be refilling it constantly.

I didn’t have any issues with spitback or gurgling whatsoever. The coils wick and perform how they should. I get a really loud pop if I don’t use the tank for a long time, especially if it’s cold. One morning I took a first puff on it and I was actually startled by a tremendous pop. Not a big deal, but worth mentioning. All in all, it performs the way a sub ohm tank should, so it’s hard to complain.

Pros / Cons

Gallery

Verdict

If you already have a sub ohm tank that you’re happy with, there’s no need to buy this tank, other than for the top airflow. As an entry level sub ohm tank, it’s definitely worth the money. But if you’re trying to upgrade your current tank, and are going for better flavor, there are better options out there.

What do you think of the Fat Rabbit? Leave a comment below and share your thoughts.