Wulf Vape Pen. The Wulf SLK Concentrate Vape Pen Kit by Wulf Mods

    Wulf Vape Pen. The Wulf SLK Concentrate Vape Pen Kit by Wulf Mods

    Wulf mods are known as one of the best vaporizers, atomizers & tanks, and vaping accessories manufacturers. The Wulf SLK concentrate vape pen kit is a sleek vape pen suitable for you as a vaper. This device is rechargeable, assuring you of a cost-effective vape pen.

    This vape pen kit is affordable and user-friendly. It has a slender design making it fit for your pocket thus portable. Additionally, it has a one-button for turning the device on or off and changing the heating options.

    So, today we will review this vape pen kit. Additionally, we will inform you about the best alternatives to this vape pen kit.

    Features of the Wulf SLK Concentrate Vape Pen Kit

    Here you will get to learn more about this Wulf vape pen. Continue reading to discover more.


    What makes this vape pen perfect for you is its design. It has a slender design making it comfortable in your hands as you vape. Additionally, this design makes it portable. You can store it in your pocket.

    Be careful, though, as it is lightweight and might fall, or you may sit on it mistakenly. This Wulf vape pen kit comes in two colors, black, and silver. Depending on the choice of color, you are sure you will find a suitable vaping device.


    For an excellent vaping time, this vape pen comes with a rechargeable battery. This means that if you are not done vaping your e-juice but the battery is over, you can recharge. When you purchase the Wulf SLK concentrate vape pen kit, it comes with a charging USB cable.

    At no point should you use another charging cable. Wulf mods advise you not to charge this vape pen with a powerbank with a voltage rating of 5V and above. Additionally, don’t ever charge this vape device in your vehicle.

    Be very careful when charging to avoid overcharging. In case you violate the above instructions, the battery might get damaged.

    This pen’s battery has a female 510 thread, making it pairable with many cartridges apart from the one it comes within the kit.

    The battery life of this vape pen depends on the voltage you are using.

    3 Heating Options

    Another great feature of this vape pen is it has three heating options. They include;

    • 8V
    • 4V
    • 4V

    Depending on the voltage option you choose, you must turn on the device by pressing the power button five times. To change the heating option, press the single power button three times.

    When you power on the vape pen, it will automatically be at the lowest voltage of 2.8V. You can know this as it lights green. When you set it at 3.4V, it will glow blue. As for the 4V, it illuminates red.

    Note: As you turn on the device, wait for fifteen seconds for the vape pen to heat before you begin vaping.

    One Vaping Mode

    This Wulf vape pen has one vaping mode, the sesh mode. So, how does it work?

    Once you activate the vape pen by pressing down the button, you can choose the vaping mode. Suppose you want a passive draw, you should set the sesh mode.

    To set the sesh mode, you should click the button two times. This allows you to vape without pressing the single button for the device to release vapor.

    Its internal quartz heating unit creates a ceramic chamber that heats your e-liquid. Thus, producing a massive vapor that has an even concentrate of the vaping liquid.

    Easy to Clean and Maintain

    What fascinates us about using this device is its ease of cleaning. You can dismantle the Wulf vape pen into three sections, making it easy for you to clean.

    Also, it makes maintenance easy for you. So, if you notice a reduction in its performance, it is better to clean and check if it requires any maintenance.

    Pros and Cons of Wulf Vape Pen Kit


    • Durable
    • Sleek design
    • It has one vaping mode
    • Lightweight
    • Easy to refill
    • Easy to clean and maintain
    • Compatible with various cartridges
    • It has three heating options


    • Some users complained about its effectiveness and usability

    How to Refill the Wulf SLK Concentrate Vape Pen Kit

    Is your e-liquid over in the cartridge? Then it is time to refill it with your favorite e-juice. But suppose it is your first refilling a vape pen’s cartridge you need guidance.

    So, in this section, I will take you through ways of refilling your Wulf vape pen tank.

    Step 1: Unscrew the mouthpiece

    It would help if you detached the mouthpiece from the vape battery. This allows you to add the e-liquid without any trouble.

    Step 2: Fill the Tank Using the Top Part

    On the top part of the cartridge, fill the e-juice using the needle bottle. Don’t entirely refill the tank.

    The best thing about this vape’s tank is transparent, allowing you to view the amount of e-liquid remaining on the tank. So, you can know when it is the right time to refill the vape pen.

    How to Use the Wulf SLK Concentrate Vape Pen

    Using this vape pen is straightforward. After removing it from the kit, make sure you charge it using the USB cable in the kit.

    When the battery is fully charged, screw the cartridge to the battery.

    Then remove the top enclosure. Remember to twist the mouthpiece before activating the device.

    Watch this video to learn more.

    After that, press the SLK button five times to power the vape pen.

    Now start vaping by holding the SLK button if you don’t feel like holding the SLK press it two times to activate the sesh mode.

    With this mode, you can vape without holding the button and get a clean draw.

    Note: Before you start vaping, you must wait for fifteen seconds for the vape pen to pre-heat. This function is buttonless and works after powering the pen.

    Alternative Vape Pen: UPENDS Uppen Open Pod System

    Suppose you are looking for the best alternative vape pen to the Wulf vape pen. Then the best is the Uppen open pod system.

    It is an UPENDS product, and you should consider buying it today. This is because of its simplicity and vapor production.

    Uppen uses an Etchip coil that enables you to draw a satisfying vapor from the first draw. This coil has a large heating area which makes the device have a high heating efficiency.

    Additionally, this coil is tested with the best e-liquid brands in the market, and indeed it has performed well. So, you are sure that using this UPENDS pod system, you will enjoy vaping.

    To maintain the freshness of the e-juice, it has a protector (Uppen cap). It guards the e-liquid against exposure to air when you are not vaping. Furthermore, the cap prevents contamination and oxidation.

    Apart from freshness, contamination, and oxidation, this cap also protects the mouthpiece from dirt and dust. Also, the mouthpiece is made using an antibacterial technology whose rating is 99.9%.

    This guarantees you a proper hygiene level while using this vape pen.

    No matter your vaping experience, using Uppen is easy. You don’t have to be a pro to use this vape device.

    Moreover, this rechargeable vape pod system is simple to refill. It uses a side-hole refilling method. All you need is to pull back the silicone plug and fill the tank with your favorite e-juice.

    The hole is compatible with all types of droppers.

    FAQ About Wulf SLK Concentrate Vape Pen Kit

    How Much is the Wulf SLK Concentrate Vape Pen Kit?

    The price of the Wulf SLK concentrate vape pen kit varies with the online shop you choose. According to our study, we found out it costs $19.99 at Wulf Mods.

    At GotVape, this similar vape pen goes for $11.99. Why the price difference? This is because, at GotVape, they sell the battery and charger. While at Wulf Mods, they sell the whole kit.

    So, in case you have a 510-threaded cartridge, you can go for the battery alone at GotVape. But if you want the whole kit, please go to Wulf Mods.

    How Does a Wulf Vape Work?

    Turn on the Wulf vape pen by pressing the SLK five times. To change the heating option, press the SLK button three times. If you want to set the sesh mode, click the button two times. Sesh mode allows you to draw vapor without holding the SLK.

    When it comes to cleaning and maintenance, unscrew the cartridge and the battery to clean and check for any maintenance issues.

    Why is My Wulf Micro USB Blinking White?

    Did you plug the Wulf vape pen to charge? Then when you see twenty rapid flashes (white), the battery is full.

    It takes approximately one hour to charge. But on the first instance (after buying), let it charge for two hours.


    This is all about the Wulf vape pen. Suppose you didn’t get any information right, feel free to leave a comment. Also, don’t forget to visit UPENDS for the best vaping devices at an affordable price.


    To use the UPENDS website you must be aged 21 years or over. Please verify your age before entering the site.