# Aspire PockeX, a hands-on guide one question at a time > Switching on, filling, changing the coil, choosing an e-liquid and setting the draw on the Aspire PockeX, step by step from the maker's own manual. Most pages about the **Aspire PockeX** are shop listings that quote 1500 mAh, 2 ml and two coil values, then stop. The questions you have on the first evening go unanswered, such as how to switch it on, where the e-liquid goes, how to change the coil, which e-liquid to use and why it sometimes stops heating without warning. Aspire's manual answers nearly all of them, provided you find it and read it to the end. ## Aspire PockeX, the essentials at a glance Five quick presses of the button switch the device on or off. Filling happens from the top, by unscrewing the top cap, without going past the Max line on the tank. The coil screws into that same top cap, so it can be swapped without emptying the e-liquid. On e-liquid, Aspire describes the 0.6 ohm coil as good for both flavour and vapour, and recommends the 1.2 ohm coil to anyone who prefers stronger nicotine e-liquids. The maker describes no airflow adjustment ring, so the character of the vapour comes down to the coil fitted. The tube is 117.7 mm long and 19.7 mm across, and weighs 86 g, with a stainless steel body, a glass tank and a Delrin drip tip. In the pocket comparator on our home page, a tube goes in with its diameter as both width and thickness, giving 45.7 cm³. Next to the original Pixo, at 55.0 cm³, it takes 16.9% less room, a gap explained in our [guide to the Aspire Pixo range](/uk/aspire-pixo-range/). ## How to switch the Aspire PockeX on and off A single button does everything. Five quick presses power the device up or down, and the light around the button flashes three times to confirm. Once on, the PockeX heats for as long as the button is held, with no screen and no menu. The same light shows the battery level. It stays blue above 30% and changes colour below that point, a cue to recharge before the device cuts out. The manual advises switching the device off or locking it whenever it is not in use, especially in a pocket or a bag. On a single-button tube, an accidental press against keys or the bottom of a pocket is enough to fire the coil. ## How to fill the tank from the top Filling takes three steps: 1. unscrew and remove the top cap; 2. pour the e-liquid into the tank without going past the Max line; 3. screw the top cap back onto the tank. The tank holds 2 ml, the most a refillable tank may hold under UK rules. Its glass tube shows the level at all times, which Aspire presents as the way to avoid drawing on a dry wick. The manual also asks you never to let the tank run completely dry. Cotton that no longer receives e-liquid burns quickly, and the coil then needs replacing. ## Changing the coil without draining the tank This is arguably the most practical feature of the PockeX. The coil fits under the top cap rather than at the bottom of the tank, so it can be replaced while e-liquid is still inside. ### The steps, from the manual Unscrew and remove the top cap, screw the new coil into it, then screw the assembly back onto the device. Leave it to rest for five minutes so the cotton soaks through. Aspire's product page mentions two to three minutes depending on how thick the e-liquid is, the manual five, and the longer wait costs nothing. ### Which coil to buy The PockeX uses U-Tech coils, the same technology as the Nautilus X, but the two are not interchangeable. Aspire states that a Nautilus X coil will not fit the PockeX, nor the other way round. The listing gives two values, 0.6 ohm in 316L stainless steel and 1.2 ohm in kanthal, and the box includes one of each. ## Which e-liquid for the Aspire PockeX The coil value drives the choice. Fitted with the 0.6 ohm coil, the device delivers more power and aims at flavour and vapour alike. The 1.2 ohm coil needs less power, gives a smoother vapour according to Aspire, and is the one the maker pairs with stronger nicotine e-liquids. In the UK, those are capped at 20 mg/ml and come in bottles of 10 ml at most. Aspire flags a practical point for thicker e-liquids high in vegetable glycerine. It suggests giving the tank time to re-soak the cotton after two or three puffs, and avoiding long draws back to back. ## Setting the draw without an airflow ring Aspire describes a top airflow that it calls large, but neither the listing nor the manual mentions an adjustment ring. On the Aspire PockeX, the result is therefore chosen when you fit the coil, a smoother vapour with the 1.2 ohm according to Aspire, a warmer one with the 0.6 ohm, which receives more power. Power cannot be chosen at all. The PockeX uses bypass output, which means the battery sends its voltage straight to the coil without regulation. Power is then the voltage squared divided by the resistance. With a full battery at 4.2 V, the 0.6 ohm coil receives at most 29.4 W and the 1.2 ohm coil 14.7 W. At the 3.2 V cut-off, those ceilings drop to 17.1 W and 8.5 W. These are theoretical figures before circuit losses, but they explain why the heat fades as the battery drains. ## Why the PockeX stops or will not switch on Almost every stop has a precise meaning, shown by the number of flashes. Knowing them saves you from assuming a fault too quickly. After 10 seconds of continuous pressing, the device cuts the heat and the light flashes ten times, blue or pink depending on the charge. Aspire then suggests letting the tube rest before carrying on. On a short circuit, heating stops and the light flashes two or three times in blue and pink, a sign to check the coil. When the battery drops to 3.2 V, the light flashes pink fifteen times and the device stops until it is recharged. While charging, the light turns red, then green once the battery is full, with charging stopping by itself at 4.2 V. Early units charge through micro-USB, later ones through USB-C. ## FAQ Five questions that come up after the first few days, answered from Aspire's documentation. ### Can I vape the Aspire PockeX while it charges? The manual does not recommend it. Wait for the light to turn green, then unplug the device. ### Which mains adapter should I charge it with? Aspire recommends a 5 V, 1 A adapter and advises against 5 V, 2 A phone chargers. The PockeX draws no more than 800 mA when charging in any case. ### Is it normal for the PockeX to get warm while charging? Yes, mostly at the bottom of the device, which releases the heat produced during charging. The maker treats this as normal. ### Where can I find a spare drip tip or glass tube? The drip tip is the same as the one on the Nautilus X. The 2 ml glass tube, with its metal cover, is sold separately in Aspire's online store. ### What comes in the PockeX box? The device, two coils (one 1.2 ohm and one 0.6 ohm), a USB cable and the user manual. ## Aspire PockeX, a simple tube once you read its signals The PockeX barely adjusts, and that is what keeps it simple. Everything is decided by the coil you fit, by respecting the Max line and by giving a new coil five minutes. The rest is in the flashes of the light, which tell you each time what is going on. As a pen pod for a shirt pocket, the **Aspire PockeX** asks you to know its manual far more than to master any settings. Our other features put more adjustable compact pods through the same close reading. ## In the same pocket - [Geekvape Soul 2, which cartridge for which draw](/uk/geekvape-soul-2-cartridges/) - [Vaporesso Vibe SE and Vibe SE 2, the two modes and pod care](/uk/vaporesso-vibe-se-modes/) - [OXVA VPrime and VPrime 2, telling them apart and caring for the cartridge](/uk/oxva-vprime-care/) Perle Glacée writes for adult readers only. Vaping products usually contain nicotine, which is addictive, and nicotine vaping products cannot be sold to anyone under 18 in the UK. This feature describes a device and is not a buying recommendation.