The OBS Ace is another sub ohm tank from a brand that has given us some great devices as of late. The OBS Cube kit, a tidy little mod that looks the business and the OBS Engine 2 RTA . OBS Ace review

It’s a company tha marries great design with, usually, top performance so we are hoping for more of the same.

What Can We Expect From The Ace Tank by OBS?

The Ace tank features ceramic coil heads, known for their longevity and cleaner flavour, with heat resistant properties that help to reduce the likelihood of burnt hits and a nasty taste.

OBS’s ceramic coil is known as the Ceramic Core, which has a coat of non toxic ceramic composite surrounding a traditional Kanthal coil. These boast a much longer lifespan over a traditional Kanthal coil alongside a smoother vape.

There’s also a convenient side filling method, alongside some big airflow too. OBS also have an RBA coil available for purchase to please re-builders.

The big question is, how does it perform? Lets take a look.

Kit Contents

  • OBS Ace tank
  • Pre-installed ICC Coil Head
  • Glass tank section

Key Features

  • 22mm width
  • 64mm height
  • 304 Stainless Steel Construction
  • Glass tank
  • 4.5ml juice capacity
  • 0.5 or 0.85ohm ICC ceramic coil heads
  • Side filling
  • Top and bottom AFC
  • Adjustable juice flow

Build Quality and Airflow

The OBS Ace is a tank that looks like it means business, and it’s a solidly constructed tank as well.

It feels really robust and solid, manufactured from stainless steel, and it has a thick glass tank section. There is also a spare glass tank section included within the kit as well if you manage to break the glass tank section. Your choice of a silver or black finish is available.

Side filling is present on the OBS Ace, by lifting the top cap you reveal the fill port and you can fill quite quickly and easily. OBS Ace Tank Review

You do need to ensure the juice flow control is shut off otherwise your juice will just spill out of the bottom airflow slots, simply rotate the tank to open and close this off.

Airflow is found on both the top and the bottom of the tank. At the top of the tank you will see three dots, and you can close down or open these up which helps to warm up or cool down your vape. OBS Ace drip tip

At the base of the tank you will find two huge airflow slots, again these are adjustable too, and there is plenty of airflow available. OBS Ace Ceramic CoilThis is a pretty airy tank!

How Does The OBS Ace Tank Perform?

For this review I filled up with one of my goto juices at the moment, Kingside Tobacco by Five Pawns.

As mentioned above, the OBS Ace is a very airy tank, suitable for direct lung hitters and cloud chasers.

The vapour production can be pretty phenomenal, with huge clouds of thick, dense and more importantly, tasty vapour. Ceramic coil tanks are known for their generous vapour output and the OBS Ace is a great sub ohm tank for big clouds.

The ceramic coil heads have absolutely no issue with wicking pretty much any type of juice you can think of. OBS Ace drip tip airflow

I don’t really think I suffered even a hint of a dry hit when I used the tank, however the coil does wick so efficiently that the OBS Ace does get through it’s fair share of juice, so just bear that in mind!

The flavour from the 0.5ohm ICC coil included with my OBS Ace was pretty impressive, even at higher wattages.

I’ve taken it up to 70w and still had very good flavour, albeit a pretty hot vape (and a hot tank to match), however in my own personal opinion I liked it in the 40-50w range.

The flavour delivery is smooth and crisp, with a nice warmth to it as well.

There is an RBA head available with the tank but you will need to choose the kit that includes this, as not all do.OBS Ace RBA Deck

What I Liked

The coil lifespan from the ceramic coil head is exceptional, and a real improvement over traditional Japanese cotton wicked coil heads, that only tend to have a lifespan of a week or so.

The coil heads found with the OBS Ace have lifespan potentially stretching into the months, I’ve been using mine for well over a month now and performance hasn’t dipped a bit!

The looks may be hit and miss with some, but I think the OBS Ace is a good looking tank.

Its got smooth, clean lines and the design looks the business, I think its much improved over the OBS Crius!

There’s loads of airflow present with this tank. You have airflow present at top and bottom of the tank, and this tank is capable of producing a lot of vapour, and being run at pretty high wattage as well.

Price I feel is great for this tank. Considering the lifespan you get from the coil heads, and the fact there is an RBA head available for purchase separately, you could get a lot of mileage out of your initial investment.

What I Didn’t Like

Heat does seem to be a bit of an issue with the OBS Ace. Even with both airflows completely open, the tank does get awfully hot when using it at above 50w, almost too hot to touch.

Even the delrin drip tip gets very hot, meaning you have to put the whole tank down for a moment or two to allow it to cool down.

There is an RBA coil available for purchase separately, but I think it is a little on the mean side to charge for this rather than include it in the retail box, especially when you consider that you only get the one coil included with your kit.

Since writing this review there are OBS Ace kits available with the RBA head included. So if you do want this feature be sure to choose your kit accordingly.

Final Review Verdict

The ceramic coil tank market is starting to get a little crowded, however in my opinion the OBS Ace is the best one I have experienced yet when it comes down to performance.

I couldn’t help but be impressed with the smooth and superb flavour, and it’s a bit of a beast when it comes to clouds too, able to produce a pretty phenomenal amount of vapour with the large amount of airflow at your disposal.

I believe the OBS Ace sets the standard when it comes to ceramic coil tanks, and sets a benchmark for other ceramic coil tanks to follow. Coil longevity is a bonus too, which means you get plenty of mileage from your coil heads!


  • Very long coil lifespan
  • Clean flavour
  • Plenty of airflow
  • Airflow at top and bottom of tank
  • Quick side filling method
  • Good looking tank
  • Good build quality
  • Relatively cheap price


  • Gets very hot when using at high wattage
  • Vape can get very warm
  • RBA coil needs to be purchased separately
  • Only one coil included in the kit
  • Very thirsty tank
Build Quality
Would I Replace If Lost?
Been vaping full time for three and a half years, started on cigalikes for a fair while then curiosity got the better of me and I moved onto an ego/ce5 set up after, a month or two later I was seeing people walking around with these interesting shiny tubes and I thought 'I gotta get one of those'. Before I knew it a trip down to my local B&M got me my first VW mod, an Innokin SVD, paired with an iClear 30, and I was hooked. Soon after that I was jumping to VW mods both box and tube shaped, before I then made the jump to rebuilding and thus sub ohming, with my first RDA and mech mod. These days I'm still preferring mechanical mods, but using VW mods with both RDA's and tanks alike whilst on the move, most importantly I am still loving vaping!


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