True convection for your pocket - Wolkenkraft FX Mini Ultra reviewed
How much convection fits in your pocket? Our FX Mini Ultra experience
First impression: The FX Mini Ultra is one of those devices you pick up more often than you expected. It is short and compact, and the magnetic mouthpiece holder lets you fill it in seconds. When you draw, you see why true convection is so popular in this format: the vapor tastes clear and clean, especially in the low and medium temperature range. But you also notice what it is designed for - short sessions, not a long evening on the sofa.
The most important facts about the FX Mini Ultra at a glance
- +True convection with a titanium filling chamber in a very small housing
- +Double-glazed, fully isolated vapor path for clear flavor
- +Precise to the degree from 100 to 220 °C - significantly wider than on the old FX Mini
- +Magnetic slide-in mouthpiece holder: one quick movement for filling and cleaning
- +USB-C with, according to the manufacturer, a significantly shorter charging time
- +Five-year warranty including the battery, plus two herb capsules included in the Capsule Caddy
- –1600 mAh battery: made for short sessions; with heavy use, you charge it more often than the Äris Ultra
- –Timer maximum 5 minutes - rather short for long, relaxed sessions
- –Shorter than the Äris Ultra, but at around 141 g, not lighter
- –Designed as a herbal Vaporizer; the manufacturer does not mention concentrates for the Ultra
The FX Mini Ultra in practice: on the go and at home
The FX Mini Ultra is all about being easy to take along in everyday life. That is why here we focus less on specifications and more on how it performs in typical situations.
Our process for one filling
Where the FX Mini Ultra shines
- The shortest Wolkenkraft device, fits well in a trouser pocket
- Pre-fill capsules and take them with you in the Capsule Caddy
- The more scratch-resistant display handles life in a bag better
- As a secondary device alongside a desktop device or larger portable
- Smoother draw with a bubbler
- For long sessions, choose the Äris Ultra instead
- Its real strength
- Switch it on briefly, take a few draws, put it away
- Haptic feedback instead of looking at the display
Small details that make the difference
- The magnetic mouthpiece holder is the biggest everyday convenience boost.
- For multiple sessions a day, the 1600-mAh battery is the first thing to keep in mind - carrying a USB-C cable in your bag won't hurt.
- The low temperatures starting at 100 °C are more than just a specification: experimenting is especially worthwhile with aromatic herbs.
- Despite its short design, it is no lightweight - it feels solid and rather substantial.
Mistakes you should avoid
- Planning a session for 7 minutes - the timer ends at 5 minutes, so the temperature curve should be adjusted accordingly.
- Pressing too much material into the small chamber.
- Buying the FX Mini Ultra as your only device for long evenings - it is not built for that.
- Using concentrates: The Ultra is designed as a herb Vaporizer.
Heating system and materials: convection with titanium chamber
The FX Mini Ultra uses optimized convection technology: Hot air flows around the herbs instead of them resting continuously on a hot surface. This ensures even extraction and reduces the risk of individual areas of the filling getting too hot. The fact that true convection fits into a device of this size is the Ultra's real strength.
The filling chamber is made of titanium, and the air channel is completely isolated from the electronics. We explain in detail how the heating method affects flavor in the informative article Convection, Conduction, and Hybrid.
- Heating system: patented, optimized convection technology, titanium filling chamber, insulated air channel
- Temperature: 100–220 °C (212–428 °F), accurate to the degree, switchable between °C/°F · Heat-up time: approx. 25 sec
- Mouthpiece: magnetic slide-in holder, extendable glass mouthpiece with double glazing, gold-plated ring, blue LED
- Display: large OLED (more scratch-resistant than the predecessor) with target/actual temperature, timer, and battery level, haptic feedback
- Timer: accurate to the second from 3 to 5 minutes
- Battery: 1600 mAh, USB-C, 120-cm premium cable with data transfer
- Dimensions & weight: approx. 8.1 × 5.0 × 2.8 cm, approx. 141 g · Colors: midnight blue, wood finish
- Quality & warranty: Manufactured according to DIN ISO 13485, 5-year manufacturer's warranty including the battery
What's new in the FX Mini Ultra
The previous FX Mini already featured a titanium chamber and true convection. The Ultra addresses the areas that caused issues in everyday use - operation, charging, and temperature range:
- Starts at 100 °C instead of 160 °C - the delicate aromas at the beginning of a session are now accessible
- USB-C instead of Micro-USB, with a noticeably shorter charging time according to the manufacturer
- Magnetic slide-in mouthpiece holder for faster filling
- Timer accurate to the second from 3 to 5 minutes and a more scratch-resistant OLED display
- Capsule Caddy with two herb capsules included
Mouthpiece: magnetic and double-glazed
The mouthpiece base is attached and removed using a magnetic slide-in mechanism - no screwing, no jamming. Especially when filling it on the go, this is noticeably faster than conventional plug-in connections.
Important for flavor: The mouthpiece unit is glass-coated on the inside, and it also features an extendable glass mouthpiece that reaches the bottom of the unit. So, on its way to you, the vapor comes into contact with almost nothing but glass. A visual detail: A blue LED illuminates the glass mouthpiece.
Display and operation
The FX Mini Ultra is operated directly on the device, without an app. The large OLED display shows the set and actual temperature, timer, and battery level. The display material has been revised for the Ultra and is now more scratch-resistant - a useful detail for a device that lives in your pocket.
While it is heating up, a red light illuminates; once the temperature is reached, it changes to blue. There is also haptic feedback when switching it on and off. You can set the session duration to the exact second between 3 and 5 minutes, and switch between Celsius and Fahrenheit using a key combination.
The right temperature for the FX Mini Ultra
With its expanded range of 100 to 220 °C, it can meaningfully vaporize significantly more types of herbs than its predecessor. Our recommendation, based on our article The right Vaporizer temperature:
- 100–160 °C: when aroma matters more to you than vapor volume, and for getting to know new herbs
- 160–175 °C: light and flavor-focused
- 175–190 °C: the balanced everyday range
- 190–205 °C: stronger and denser
- 205–220 °C: extracts the remaining compounds from the material in the final draws
Battery, charging, and handling
The 1600 mAh battery is tailored to the compact format: it lasts for short sessions throughout the day, but with intensive use, you will need to charge it more often. On the plus side, the FX Mini Ultra uses USB-C and, according to Wolkenkraft, recharges up to 30% faster than its predecessor. A 120 cm premium cable is included.
At around 8.1 × 5.0 × 2.8 cm, it is the shortest Wolkenkraft device, but at approximately 141 g, it weighs about as much as the Äris Ultra. It reaches temperature in around 25 seconds. Wolkenkraft provides a five-year warranty, including the battery for the device.
Cleaning: done in no time
The double glazing has a pleasant side effect: glass does not absorb odors and is easier to clean than plastic. This keeps the flavor clear over time.
Useful accessories for the FX Mini Ultra
Wear parts you should keep in stock
- FX Mini Ultra sealing ring: seal and screen in one. If the vapor gets thinner or the draw becomes tight, you should replace it first.
- Mouthpiece screens: fit the FX Mini, FX Mini Ultra, Äris, and Äris Ultra.
Nice to have
- Bubbler for FX Mini (Ultra): water cooling made of borosilicate glass, making even higher temperatures comfortable.
- Dosing capsules and capsule container: two capsules are included; with a few extras, you can stay on the go longer without refilling.
- Glass mouthpiece and dust cap: as replacements in case of breakage or loss.
What’s in the FX Mini Ultra box
- 1 × Wolkenkraft FX Mini Ultra (midnight blue or wood look)
- 1 × dust cap and 1 × sealing ring with screen
- 1 × ULTRA capsule container in midnight blue with 2 × dosing capsules for herbs
- 1 × tool, 1 × pair of tweezers, 1 × wooden and natural-bristle cleaning brush, 2 × cleaning cloths
- 1 × premium USB-C cable (120 cm, with data transfer)
- User manual in six languages
Who will be happy with the FX Mini Ultra
- you want true convection in the smallest possible format
- you mainly have short sessions on the go
- you’re looking for an uncomplicated introduction with straightforward operation
- you want a second device alongside a larger Vaporizer
- clear flavor matters more to you than large vapor clouds
- you like long sessions or sessions for two - in that case, the Äris Ultra with its larger battery and 7-minute timer is a better choice
- you rarely have access to a charging cable when you’re on the go
- you regularly want to vaporize concentrates
FAQ about the Wolkenkraft FX Mini Ultra
Is the FX Mini Ultra a convection Vaporizer?
Yes. The FX Mini Ultra uses optimized convection technology: Hot air circulates around the herbs, and the filling chamber is made of titanium. Learn more about heating methods in the guide Convection vs. Conduction vs. Hybrid.
How does the FX Mini Ultra compare with other Wolkenkraft devices?
We’ve summarized all direct comparisons - from the predecessor to the Äris Ultra - in the Wolkenkraft Guide.
Can I vaporize concentrates with the FX Mini Ultra?
The manufacturer describes the FX Mini Ultra as a herb Vaporizer. It is not designed for concentrates - if you regularly want to use extracts, you’re better off with a device built for that purpose.
Does the FX Mini accessory fit the FX Mini Ultra?
Mostly, yes: Screens, dosing capsules, a bubbler, and the dust cap fit both devices. The exception is the sealing ring - you need the special ring for the FX Mini Ultra.
How long does the battery last?
The 1,600 mAh battery lasts for several short sessions. The exact number mainly depends on the temperature and session duration. It charges via USB-C.
How long is the warranty on the FX Mini Ultra?
Wolkenkraft provides a 5-year manufacturer’s warranty including the battery. It is manufactured according to DIN ISO 13485.
