Innokin Prism S Replacement Coils (5 Pack)

Further Information

If your Innokin Endura T20-S, EZ Watt or Apex is starting to taste burnt or the vapour has gone thin, it's almost always the coil, not the tank. The Innokin Prism S is the original replacement coil for that whole family of devices, and it's one we get asked about by name at V2 Cigs UK, usually from customers who bought their kit a while back and have just run out of spares. Each box gives you five coils, so once you've worked out which resistance suits your vaping style, you can stock up rather than reordering every few weeks.

There are three resistances in the range: 0.8 ohm, 0.9 ohm mesh, and 1.5 ohm. They're not interchangeable in terms of experience. The 1.5 ohm is the gentlest of the three, built for a tight, cigarette-like draw at low power. The 0.8 ohm sits in the middle with a slightly warmer vape and stronger flavour. The 0.9 ohm uses a mesh heating element rather than traditional wire, which heats faster and more evenly, so if flavour is your priority over anything else, that's the one to try first.

Key Features

• Genuine Innokin Prism S coils, five per box
• Three resistances available: 0.8Ω (16-18W), 0.9Ω Mesh (14.5-18W), 1.5Ω (13-14W)
• 0.8Ω and 1.5Ω use Kanthal A1 wire with organic cotton wicking; 0.9Ω uses a mesh heating element
• Built-in 510 connector pin for a simple push-fit install
• Designed for the "no-spill coil swap" system on the Endura T20-S and Apex tanks
• Suited to mouth-to-lung (MTL) vaping only
• Compatible with 50/50 and high PG e-liquids

Full Specifications

Brand: Innokin. Model: Prism S. Pack size: 5 coils per box. Coil type: Kanthal A1 wound coil (0.8Ω and 1.5Ω) or mesh coil (0.9Ω). Wicking: organic cotton. Connector: 510 pin. Vaping style: mouth-to-lung (MTL) only. Compatible e-liquid: 50/50 PG/VG or high PG. Country of manufacture: China.

Resistance and wattage by variant: 0.8 ohm rated 16-18W, 0.9 ohm mesh rated 14.5-18W, 1.5 ohm rated 13-14W.

Dimensions and Weight

Each coil measures approximately 3.3cm in height (1.3 inches) with a 1.3cm diameter (0.5 inches). A full box of 5 coils weighs approximately 11g (0.011kg), which works out at roughly 0.024lbs. These figures are consistent across all three resistances, since the coil body dimensions don't change, only the internal wire or mesh construction.

What's in the Box

• 5 x Innokin Prism S Replacement Coils (in your chosen resistance)
• No spare parts, tank or drip tip included, this listing is for coils only

Coil and Compatibility Guide

The Prism S coil was designed around Innokin's "no-spill coil swap" tank base, so it fits any device that uses that same tank system. In practice, that means the Innokin Endura T20-S kit and its Prism T20-S tank, the Innokin EZ Watt kit, and the Innokin Endura Apex kit and its Apex tank. One thing worth flagging if you're on an Apex: the 1.5 ohm coil isn't compatible with that device, it's built specifically for the T20-S and EZ Watt.

To swap a coil, unscrew the base of the tank while it still has a small amount of e-liquid left inside (this stops it spilling), pull the old coil out, and push the new one into place with the 510 pin facing down. Screw the base back on and leave the tank to sit filled for 5 to 10 minutes before vaping, so the wicking has time to fully soak. Vaping on a dry coil, even briefly, is the single most common reason a Prism S coil burns out early.

Recommended E-Liquids

The Prism S is an MTL coil built for high PG and 50/50 blends rather than high VG shortfills, which will overwhelm the wicking and cause dry hits. For flavour and a satisfying throat hit, we'd point you toward the V2 Platinum E-Liquid range, particularly Red Tobacco, Sahara, Congress or Menthol, all formulated at the PG ratio this coil is designed around. If you're using the coil in an Apex or EZ Watt and want to browse other MTL-friendly options, the wider coils section gives you a sense of what else pairs well with restrictive-draw tanks.

Usage and Maintenance Advice

Prime every new coil before vaping. Drip a few drops of e-liquid directly onto the visible cotton, then fill the tank and let it stand for several minutes. Avoid firing the device dry, even for a test puff, as this scorches the wick instantly and shortens the coil's lifespan dramatically. Expect somewhere between 3 and 10 days of use per coil depending on how often you vape and how sweet your e-liquid is, sweeter juices tend to gunk up the wicking faster and shorten that window. If flavour starts to taste burnt or muted, that's your cue to change the coil rather than push on.

Frequently Asked Questions

Which Prism S coil should I buy, 0.8, 0.9 or 1.5 ohm?
If you want the tightest, most cigarette-like draw, go for 1.5 ohm. If you want stronger flavour and slightly more vapour, try 0.8 ohm. The 0.9 ohm mesh heats faster and tends to deliver the most intense flavour of the three, but it isn't compatible with every device in the range.

Is the Innokin Prism S coil the same as the Prism T18 or T20 coil?
No. Innokin has several coil families that look similar but aren't interchangeable. The Prism S is a specific fit for the Endura T20-S, EZ Watt and Apex tanks, and won't screw into older T18 or T18E tanks.

Can I use the 1.5 ohm coil in my Innokin Apex?
No, the Apex tank only takes the 0.8 ohm and 0.9 ohm mesh coils. The 1.5 ohm is built for the T20-S and EZ Watt only.

How long does a Prism S coil last?
Most vapers get somewhere between 3 and 10 days per coil, depending on vaping frequency and how sweet the e-liquid is. Sweeter, higher-sugar-content flavours tend to gunk the wick faster.

Why does my new coil taste burnt straight away?
This almost always means it wasn't primed properly before use. Make sure the tank is filled and left to stand for several minutes before your first puff, and never fire a coil that hasn't had time to soak.

Can I use nic salt e-liquid with the Prism S coil?
Nic salts are usually formulated for lower wattage pod systems, and the Prism S runs at 13-18W depending on resistance. A 50/50 freebase or high PG e-liquid at a comparable strength will generally perform better and last longer in this coil.

What's the difference between the 0.8 ohm and 0.9 ohm mesh coil?
The 0.8 ohm uses traditional Kanthal wire wound around cotton, while the 0.9 ohm uses a flat mesh heating element. Mesh coils typically heat more evenly and produce stronger flavour, though wire coils are often considered slightly longer lasting.

Does the Prism S coil work with shortfill or high VG e-liquid?
It's not recommended. This coil and the tanks it's built for are designed around 50/50 or high PG e-liquid. High VG juice is too thick for the wicking and will likely cause dry hits and premature burnout.

How do I know when to change my coil?
Look out for a burnt or muted taste, a gurgling sound, reduced vapour, or visible darkening around the airflow holes. Any of these are a sign the coil has reached the end of its life.

Is the Innokin Prism S coil TPD compliant?
Yes, all three resistances are registered with the MHRA as required under UK TPD regulations. Compliance details are correct at the time of writing, we'd always recommend checking the MHRA public register for the most current status.

Do I need to buy a new tank if my coil has burnt out?
No, in most cases a burnt coil doesn't damage the tank itself. Replacing the coil is usually all that's needed, provided the tank's O-rings and glass are still in good condition.

Can I fit the Prism S coil into a different brand's tank?
No, this coil is a proprietary fit for Innokin's Prism S tank base. It won't thread into tanks from other manufacturers or into Innokin's other coil platforms.

Vaping products are for adult smokers and existing vapers only. Not suitable for non-smokers or those under 18.

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