Something for the mouth-to-lungers
Today we take a close look at the CuBox start kit from Joyetech. As mini box mods go, the CuBox packs a whopping 3000 mAh capacity into a form factor smaller than an iStick Pico. This is a simple, plug and play type device. It’s paired with the CUBIS 2 tank. This 3.5 mL tank (2 mL version in the EU) comes with two ProC-BF 0.6 ohm coilheads. Although the resistance sounds low, these are designed for a mouth-to-lung vape. The kit is currently selling online for around $35.
Let’s get into it, and see what the CuBox and CUBIS 2 tank have to offer.
Disclaimer: We received the CuBox Starter Kit from Heavengifts for the purpose of this review.
Joyetech CuBox Starter Kit Gallery
Joyetech CuBox Starter Kit Specs and Features
- CuBox mod
- CUBIS 2 tank
- 2 x ProC-BF 0.6 ohm coil
- Non-removable drip tip
- Spare glass tank
- Micro USB cable
- User manual in English | French | German | Spanish | Italian | Russian | Japanese | Danish | Dutch | Polish | Greek
- Warranty card
- Warning card
- Available colors: Silver | Black | White | Yellow | Red | Blue
Specifications CuBox mod
- Dimensions: 22.5 mm x 39.5 mm x 67 mm
- Material: aluminum
- Weight: 102.5 g
- 3000 mAh internal battery
- Max output: 50 W
- Resistance range: 0.2 – 3.5 ohm
- Max charging current: 2 A
- 510 threaded
- 15 second cut-off
- Short circuit protection
Specifications CUBIS 2 Tank
- Width: 22 mm
- Height: 38 mm | 42.3 mm (inc. 510 pin)
- Weight: 36 g
- Capacity: 3.5 mL | 2 mL (EU version)
- Child-proof locking top cap
- Top fill system
- Adjustable top airflow control
- ProC-BF coil resistance: 0.6 ohm
- Coil wire type: SS 316
- Recommended wattage range: 15 – 28 W
Judging by the photos I’d seen of the CuBox, I was surprised when I opened the package. This thing is small – coupled with the CUBIS 2 tank, it stands a mighty 105 mm high. The top of the CuBox is 22.5 mm wide, and it’s only 40 mm deep – so perfect for spare change pockets.
The mod has a large, tactile fire button located opposite of the 510 pin. Directly above that on the top is the fan-shaped display. It has a simple interface – when you fire, the Joyetech logo lights up, and your battery life is displayed over five bars.
Those five bars give an accurate estimation of battery life. According to the manual:
- 5 bars – 90 – 100%
- 4 bars – 70 – 89%
- 3 bars – 30 – 69%
- 2 bars – 10 – 29%
- 1 bar – 1 – 9%
The micro USB port is situated on the side of the mod, parallel with the fire button, from where you can charge the CuBox. There are ten venting slots for the battery on the underside of the mod.
The 510 pin is spring-mounted, and appears to be gold-plated. The thread around it is made of stainless steel. It sits slightly higher than the top of the mod, due to a series of cut-in channels. I’m not sure whether these channels are a throwback to Vivi Nova-style bottom airflow (redundant for the CUBIS 2 tank) or a fastening head. In any case, it creates a slight gap between tank and mod.
The body of the CuBox has a gloss finish and will fit just about any hand. It’s a compact, discrete device, and judging by the output wattage of the CUBIS 2 tank, perfect for stealth vaping.
The Joyetech branding is printed, gloss-on-gloss over the body paneling on both sides. Our sample came in black and has an understated look that I find appealing. The other color versions feature the branding in black against the dominant color.
The firing button has a similar matte finish to the top of the mod, and has a minimal throw to it, while being clicky.
There’s not a lot to say here about the CuBox’s features. This mod is for straight-up, fixed output vaping. One button is all you get.
The device turns on and off with five clicks. Click to fire. The specs state that the CuBox has a maximum output of 50 watts, but it comes paired with the CUBIS 2 tank and 0.6 ohm coilheads, which have a recommended range of 15 – 28 W.
The CUBIS 2 tank comes with slightly different coils depending on where you purchase the kit. They ship with two PROC BF coilheads, which consist of a single SS316 wire. In the EU, they are replaced by the ProC-BFL heads, which have the same internal structure but a bulkier form. This effectively limits the capacity of the CUBIS 2 tank to 2 mL, in line with TPD regulations.
The CUBIS 2 tank has a sealed base and top-fed airflow. Airflow passes through the slot on the top cap, passes through two side channels along the length of the coilhead, which then feeds into the cotton from the bottom.
Two small ports for e-liquid also feed the coil from beneath, and pass through the larger wicking holes that are positioned inside the metal housing. The coil has an internal diameter of 2 mm. So, despite the relatively low resistance, the ProC-BF coilheads are designed for an MTL vape.
The atomizer base is knurled, making it easier to get a grip on the tank. The coils thread into the top cap, meaning you can change them out without any leakage.
The CUBIS 2 tank has a three-step childproof lock system: to reach the fill ports, you need to first close off the airflow entirely. That lines up two small triangles on the top cap and the airflow ring. From that point, slide the top cap away from the tank. It hinges on the other side, revealing the two top fill ports.
I like the inbuilt safety features on the CUBIS 2 tank, but I’m skeptical how sturdy the locking system is in the long run. In fact, I was able to open the close the tank without closing off the airflow. I wouldn’t recommend doing this, as it may damage the latch in the top cap.
The CuBox can be charged via USB. The 3000 mAh battery took 2.5 hours to fully charge, connected to a PC.
The all-black sample appeals, as a decent stealth MTL vape with a ton of battery life. The other color options are bright and fresh, if that’s your thing.
I’ve been using e-liquids with 9 or 12 mg/mL nicotine content at around 50/50 VG/PG for this review. I think higher-VG juices will struggle to wick the coilhead, considering how small the juice ports are.
The first thing I noticed was how damned fast the draw is on the CuBox. There is practically no ramp-up time. What you get with the CUBIS 2 is a mouth-to-lung draw with a little more punch.
Higher nic e-liquids produce a decent amount of throat hit. The coilheads give great flavor, especially when fresh. It’s a good idea to prime the coil first, with a few drops of e-liquid directly the cotton, before vaping. The fire button on the CuBox is unforgiving, and it’s easy to burn a fresh coil.
The battery life of the CuBox combined with the CUBIS 2 makes for a combo that last a long time before you need to recharge. I vaped this kit for the best part of a week before the battery died. Obviously if you’re chain vaping expect less. Still, I think 3000 mAh capacity should last you over a day with this 0.6 ohm coil.
Output wattage is hard to measure on this unregulated device, but it decreases with the battery. On a full charge, it feels like 25 W, when compared with performance on a regulated box mod. With only one bar remaining, performance is much more subdued, trickling down to about 15 W.
One cause for concern is that, on a full charge the CuBox overpowers the coilhead, something PBusardo pointed out in this in-depth review of the kit. Running the ProC-BF coils at 28 W, their maximum recommended wattage, produces a nasty burnt taste.
The CUBIS 2 tank produces a tight, intense, restricted draw. The drip tip is fixed to the top cap, but it will fit 510 drip tips on top of it, if you don’t like the wide-bore look.
If you like an intense, warm MTL vape then good for you. However, it’s not possible to change any settings on the CuBox. I find that closing down the airflow further restricts the draw. There’s a catch, however – less air getting to the coil increases your chances of dry hits.
I really like the flavor I get with a fresh coil. I got about a week and a half out of one coil before it started to taste funky.
- Impressive battery life
- Good flavor and throat hit for MTL e-liquids
- 3.5 mL capacity is adequate for a day’s usage
- Plug’n’play simplicity
- Fast charge time
- Completely fixed settings – if you don’t like them you can’t change them
- Fixed drip tip
- Mod is optimized for use with the CUBIS 2 tank only
- Can’t control wattage output = decreasing performance
- Has a tendency to overpower coils resulting in dry hits
I like a solid MTL vape. And the CuBox kit is almost there. Fresh coils produce great flavor and an intense, restricted draw. The mod has battery life for days, and a discrete form factor.
It’s a shame you can’t tweak any settings though. I’ve had good mileage from the coils that came with the kit, but other reviewers have reported unpredictable performance.
To really get with the CuBox starter kit, you have to be content with direct output. Yes, you can run the battery down, but performance decreases as you go. That means you may be charging it more often just to get the same intensity and hit. And considering the stainless steel coils, these could work a treat in TC mode.
But that, as they say, would be another box mod. As it stands, I would go with an MTL setup that offers more flexibility.