Innokin Coolfire Z50 Kit

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  • 2100mAh battery
  • Variable wattage up to 50W
  • Coils offer mouth-to-lung or restricted direct-to-lung vaping
  • Sliding top-fill tank for quick & easy filling


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Innokin Coolfire Z50 Kit

The Innokin Coolfire Z50 is the next generation of the best-selling Coolfire range. With a simple but sleek design, the Coolfire Z50 comes with an impressive 2100 mAh battery, bright OLED screen and up to 50W of power. This Mouth-To-Lung (MTL) vape kit is perfect for those who are new to vaping. You can also achieve a restricted direct to lung (sub ohm) vape by using the 0.8 ohm Innokin Z coil (one included with kit) and selecting a higher wattage, making this a truly versatile device that maintains ease of use.

The Coolfire Z50 comes with Innokin’s Zlide tank which can hold 2ml of liquids and features a sliding top for quick and easy refilling. The tank also has replaceable tank glass (included with the kit) in case of accidents. The kit is available in 3 stunning colours (Black, Blue or Silver) and have a contrasting gold or sliver band around the top of the battery. The easy to use controls and interface gives you full control to create your perfect vape. The device also features a handy on/off switch on the button for extra protection against accidental activation, along with the usual 3-button press of the fire button to lock and unlock the device.

If you fancy switching out the included Zlide tank, the Z50 is capable of up to 50W output and can accept tanks with a 22mm 24mm diameter.

Like all Innokin products, the Coolfire Z50 comes with excellent safety features and great quality. The device feels solid and produces a subtle but satisfying vapour with great flavour. If you’re looking for your first vape device, this is the perfect kit.

Includes 2 x OK E-liquids

Buy the Innokin Coolfire Z50 kit from OK Vape and receive two e-liquids from the OK Vape 50/50 range. Choose your two free juices from our wide range of great-tasting flavours using the drop-down boxes above.

Innokin Coolfire Z50 instructions

Operating the Innokin Coolfire Z50
To power the device on/off, first switch on the kit using the battery switch on the bottom of the device. Press the fire button 3 times in quick succession to turn it on/off. Hold down the fire button to activate the device and inhale on the mouth piece to vape. To change between wattage and voltage mode, hold the power and plus button for wattage, and hold the power and down button for voltage. Once in the selected mode, use the up and down buttons to adjust the output. Innokin recommend the following wattage settings for their range of Z Coils:
0.8ohm Zenith Coil – 15-18W
1.2ohm Zenith Coil – 12-14W
1.6ohm Zenith Coil – 10-14W

Filling the Innokin Coolfire Z50
Filling the Z50 tank is simple with the sliding top tank. Simply remove the mouthpiece and slide open the top of the tank in the direction of the arrow. Once you’ve filled it with your favourite E-Liquid, slide the tank closed and insert the mouthpiece.

Filling the tank on Innokin Adept

When & How to Change Coolfire Z50 Coils
Once you notice a deterioration in flavour, you’ll need to change the coil in your Innokin Coolfire Z50. The Zlide tank included with this kit is compatible with Innokin Zenith Coils.

To change the coil, first unscrew the tank from the battery then unscrew the airflow ring from the bottom of the tank. Simply remove the old coil and replace it with a new one. You can then re-attach the airflow ring and screw the tank back onto the battery. Fill the tank with E-Liquid and leave the new coil to prime for at least 5 minutes before vaping.

Battery Safety Information

Please read the included instructions fully and follow battery safety advice. Never leave charging batteries unattended and take care not to overcharge the battery. If you are charging this kit from a mains adapter, ensure that maximum power output is 1 amp and use a quality product that adheres to safety standards. Make sure the device is powered off when not in use.



  • Coolfire Z50 battery (2100mAh)
  • Zlide tank
  • 1× 1.2 ohm coil (pre-installed)
  • 1× 0.8 ohm coil
  • Spare glass tube
  • Additional mouthpiece (drip tip)
  • Spare o-ring set
  • USB charging cable
  • Instruction manual
  • Warranty card, warning booklet & battery warning card


Find more useful beginner information in the following guides. If you have any other questions, please do not hesitate to contact us.

Choosing a vape kit

Choosing the right nicotine strength

E Liquid Ingredients (what is PG/VG?)

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