The tank is the business end of your vaping device and, just as the lens on a camera plays a more important factor in the quality of your photos than the body, the tank plays a more valuable role in your vaping experience than the battery.

A tank is made up of the following components:


  • The glass tube connects the bottom part of your tank with the top half. It is where you fill your e-liquid into, and allows you to check at a glance how much liquid you have left.


  • Your vaping experience is essentially determined by the performance of the coil sitting inside your tank. The coil is made up of a metal tube, inside of which sits a coil wrapped in cotton (or cotton wrapped in a coil). The cotton soaks in e-liquid either through holes in the side of the coil or through small bits of cotton sticking out from either side of your coil. When you press the button on your battery an electrical charge is sent up to the coil, turning it red-hot and vapourising the liquid soaked in the cotton.

  • After a certain amount of usage, the coil will eventually burn out. You will notice that the coil is reaching the end of its life by a gradual negative change in flavour and harsher throat-hit. Some e-liquids will burn out your coil quicker than others. Ultimately, the rate at which your coil will completely burn out depends on how much you vape, what voltage/wattage you have your device set to, and which e-liquid you use. It is entirely up to you when you want to change your coil but we would recommend changing it after vaping 20 – 30 ml of juice. (As an aside, try using a small screwdriver to open up your coil just before it is ready to be thrown out and have a look at what it looks like inside!)


  • The bottom cap is the part that screws into your battery at one end and glass tube at the other. The coil screws into the bottom cap, too. Smaller tanks have a eGo screw-on connection, which is a larger connection often used by smaller tanks. Larger tanks will often have a 510 connection which is, ironically, a smaller connection. Many batteries will come with both connection options. If not, you can buy an adaptor that will allow you to use the alternative connection.

  • Inside the 510 or eGo connection is the firing pin. If your device is not firing, sometimes the firing pin has moved too far up into the tank and would need to be prised and nudged back out with a small flat-head screwdriver. Some manufacturers, such as Aspire, have started using spring-loaded firing pins in order to get around this problem.


  • Some more advanced tanks come with an adjustable airflow controller, usually located in the bottom cap. This enables the user to control how much air comes into the tank when inhaling. The more air flowing over the coils, the more vapour and flavour produced. There are usually 4 settings; the smallest being quite tight and similar to a traditional cigarette, going all the way to the widest, which usually produces a very airy draw (perfect for ‘lung hits’).


  • The top cap connects the glass tube and drip tip.


  • The drip tip is the small tube that goes into your mouth and through which the vapour is inhaled.




  • To fill your tank, turn it upside down and unscrew the bottom cap. Fill around the central airway pipe, ensuring no liquid goes into the airway.

  • When filling your tank, try not to overfill it as this can lead to leakages and flooding. Fill up to the top of the central airway tube but no further. You don’t want any e-liquid to go into the central airway.

  • Most tanks produce the best quality vapour and flavour when they are full. This is because the added weight of the liquid pushes down slightly harder towards the bottom of tank, moving more liquid into the cotton inside the coil.


  • When using a new coil, or using your tank for the first time, drop 2 or 3 drops of e-liquid directly onto the coil and then screw the bottom cap back on and wait at least 5 minutes before firing your device. This is to ensure that the cotton wicks in your coil are completely saturated with e-liquid. If they are not completely saturated you might get a dry hit, which will result in a burning taste in your mouth due to the coil heating dry cotton instead of cotton that’s been soaked with e-liquid. E-liquids with a higher VG percentage will often take longer to fully wick.


  • Most tanks produce their best quality vapour when they are full. This is because the added weight of the liquid pushes down slightly harder towards the bottom of tank, moving more liquid into the cotton inside the coil. As the liquid starts to go down to the bottom quarter of your tank, you will probably notice a gradual decline in the quality of vapour.

  • Be careful not to overfill your tank, as this leads to leakages and flooding.


  • Your tank will perform best if it cleaned often and thoroughly. To clean it, take it fully apart, rinse under warm water and then place all the loose components into a cup filled with warm water. Let it sit in the water for a few minutes and then rinse off again with warm water. Shake off the excess water and dry thoroughly with kitchen towel, paying special attention to all the little nooks and crannies of your tank’s design.

  • The life of your coil, can be lengthened by regular washing. BUT, always wait until the coil has dried off completely before screwing it into your tank, otherwise the coil will vapourise the water soaked into the cotton instead of e-liquid.

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