ABOUT THE UWELL CALIBURN G4 CLASSIC KIT 

The Uwell Caliburn G4 Classic Kit is an easy-to-use device that is as powerful as it is compact. A large 1400mAh internal battery will last all day on a single charge, while fast USB-C charging ensures there's less downtime. With purchase, you will receive a 0.4ohm and a 0.9ohm pod, ideal for MTL and RDTL vapers, respectively. For more pod options, make use of the compatible Uwell Caliburn G3 Replacement Pods. With both inhale and button activation, the G4 Classic Kit is an intuitive vape that anyone can use. 

KEY FEATURES:

• 2ml E-Liquid Capacity
• 1400mAh Internal Battery
• Adjustable Airflow
• Auto-Draw & Button Activation
• Compatible With The Caliburn G3 & GPP Pods
• LED Battery Display
• MTL & RDTL Vaping
• Top-Fill Pods
  
• Up To 35W Output
  

MORE ABOUT THE UWELL CALIBURN G4 CLASSIC KIT 

The Uwell Caliburn G4 Classic Kit is the perfect chocie if you want a lightweight yet powerful device. Coming with a 1400mAh internal battery that's charged via USB-C (cable sold separately), this vape will easily last all day on a single charge. 

To activate this vape, either begin inhaling or use the button. This button is also used to control some features on the vape. Click the button 5 times to turn the G4 on and off, 2 times to lock or unlock the device, and just once to check the battery level. The battery level is displayed via LED lights within the device. Red means that power is very low, blue is around halfway charged, and green is full or nearly full. 

Coming with two pods in 0.4ohm and 0.9ohm resistances, this vape is ideal for MTL and RDTL vapers, respectively. To further customise the draw of the G4 Classic, use the adjustable airflow slider on the side of the device. For more pod options, check out the compatible Uwell G3 Replacement Pods. These have a top-fill design for easy refills of your favourite nic salt or e-liquid. 

The Uwell Caliburn G4 Classic Kit features unique twin-sensor technology that allows this device to fire with 99.9% accuracy, evenly heating the e-liquid within the pod to give a bold, flavourful vape. This feature also improves pod lifespan by a whopping 300% compared to other Uwell devices. 

Contents:

• 1 x Uwell Caliburn G4 Classic Kit
• 0.4ohm & 0.9ohm Pod 
• User Manual 

Vape Battery Safety Information

At Royal Flush Vape, your safety comes first. Vape batteries are powerful, reliable, and safe when handled correctly. By following these simple guidelines, you’ll keep your vaping experience smooth, safe, and stress-free.

Safe Handling and Storage

Always treat your batteries with care.

• Never carry loose batteries in your pocket or bag — contact with keys, coins, or other metal objects can cause a short circuit or explosion.
• Use a protective battery case for carrying or storing spare batteries.
• Keep batteries clean, dry, and away from heat, cold, or direct sunlight.
• Avoid dropping, crushing, dismantling, or exposing them to water.
• Store them in a cool, dry place, and if unused for long periods, recharge and discharge occasionally to maintain performance.

Lithium-ion batteries are dependable but sensitive to misuse. Avoid overcharging, short-circuiting, or exposing them to extreme temperatures. Handle them with care and they’ll perform safely for a long time.

Understanding Battery Power and Charging

Every vape battery has two key ratings:

• Capacity (mAh) – measures how much energy it can store. A higher mAh means longer battery life.
• Continuous Discharge Rating (CDR or amps) – shows how much power the battery can safely deliver.
• Sub-ohm or cloud-chasing vaping requires a high amp rating (20A or more).
• MTL or nicotine salt devices work safely with moderate amp ratings.

To find your safe charging current, move the decimal point three places to the left in your battery’s mAh rating.
Example: 3500mAh = 3.5A maximum charging current.
Always follow the manufacturer’s guidelines and never exceed the recommended charge or discharge rate.

When charging:

• Use official or high-quality chargers — avoid cheap or unbranded ones.
• Don’t leave batteries charging unattended or overnight.
• Charge on a non-flammable surface and disconnect when fully charged.

If a Battery Is Damaged or Leaking

Stop using any battery that appears swollen, leaking, or damaged.

• Don’t touch leaking fluid.
• If it contacts skin or eyes, rinse immediately with water and seek medical attention.
• Dispose of damaged or old batteries safely at a proper recycling facility.

Remember, battery acid is toxic — handle all batteries with care and never try to open or repair one yourself.

Important Safety Reminders

• If swallowed, seek medical help immediately.
• Dispose of batteries and packaging responsibly.
• Always follow manufacturer instructions and keep product information for reference.

By following these simple precautions, you’ll ensure safe, reliable performance from your vape batteries — every time.

Why do Royal Flush Vape need to verify your age?

It is illegal to sell electronic cigarettes or any vape product which contains or can be used to deliver nicotine, to any person under the age of 18. Due to this law which was implemented on 20th May 2017; Royal Flush Vape are required to verify the age of any customer wishing to purchase our products.

How do we verify your age?

We use 1account for our age verification. Where you have asked us to provide an age restricted product or service, you consent to allow us to share your information with, and collect information from, One Account Mobile Limited (1account) and third-party providers of identity data to 1account. This consent is necessary for 1account to verify that you meet the minimum age and identity verification requirements as determined by relevant UK age restriction legislation.

You consent to allow 1account to retain relevant data for the purpose of future verification. All data processed by 1account is subject to appropriate security measures. Data retained by 1account is subject to periodic review to ensure it is not held for longer than necessary. You can find information about 1account and how they manage your personal data by visiting their website: 1account.net.

Please note that is simply an ID check and not a credit check so will not affect your credit score in any way.

The good news is that once you have been verified once, you won’t have to do this again. On every subsequent visit you just need to simply log in and we will remember your age verified status.

If for any reason, such as a recent change of address or name change we not able to confirm your age, we will contact you and ask you to use the 1account verification system to verify you are over the age of 18.

4 options are available:

• Mobile Phone
• Credit Card
• Electoral Roll
• Driving Licence

Alternatively you can provide us with a valid proof of age document such as a UK Drivers License or Passport.

If you do not wish to provide us with this information, we are able to cancel and refund your order on request.

For further information please review our privacy policy.