If you've been vaping on an Innokin Endura T20-S, EZ Watt or Apex for a while, you'll already know the coil is the part that needs the most regular attention. The Innokin Prism S is the coil that goes with all three, and having a pack of five spares in the drawer means you're never caught out when the flavour starts to fade.
There are three versions to choose from. The 1.5 ohm gives the tightest, most cigarette-like pull and is the gentlest of the three on power. The 0.8 ohm opens the draw slightly for a bit more vapour and a fuller flavour. The 0.9 ohm uses a mesh coil rather than wound wire, heating faster and more evenly, so if you're chasing the strongest flavour from your e-liquid, that's usually the one worth trying first.
Key Features
- Genuine Innokin Prism S coils, 5 per pack
- Choice of 0.8Ω (16-18W), 0.9Ω Mesh (14.5-18W) or 1.5Ω (13-14W)
- Kanthal A1 wound coil with organic cotton on the 0.8Ω and 1.5Ω
- Mesh heating element on the 0.9Ω for quicker warm-up and stronger flavour
- Standard 510 connector pin
- Built for the no-spill coil swap tank system
- Designed for mouth-to-lung (MTL) vaping with 50/50 or high PG e-liquid
Full Specifications
Brand: Innokin. Coil range: Prism S. Pack size: 5 coils. Coil construction: Kanthal A1 wire (0.8Ω, 1.5Ω) or mesh (0.9Ω). Wicking: organic cotton. Connection: 510 pin. Vaping style: MTL only. Best paired with: 50/50 or high PG e-liquid. Manufactured in China.
Power ratings: 0.8Ω runs at 16-18W, 0.9Ω Mesh runs at 14.5-18W, 1.5Ω runs at 13-14W.
Dimensions and Weight
Each coil measures around 3.3cm in height (1.3 inches), with a 1.3cm diameter (0.5 inches). A full pack of 5 coils weighs approximately 11g, which is 0.011kg or roughly 0.024lbs. These measurements stay consistent across all three resistances.
What's in the Box
- 5 x Innokin Prism S Coils in your selected resistance
- No tank, drip tip or device is included in this listing
Coil and Compatibility Guide
The Prism S coil is built to fit the tank system used on the Innokin Endura T20-S, the EZ Watt, and the Innokin Apex kit and tank. If you're using an Apex, keep in mind the 1.5 ohm coil isn't compatible with that tank, so choose between the 0.8 ohm and the 0.9 ohm mesh instead.
To change a coil, unscrew the base of your tank while there's still a little e-liquid inside to stop it dripping, pull the old coil out, and push the new one in with the 510 pin facing down. Screw the base back into place, refill the tank, and let it sit for around 5 to 10 minutes before your first puff so the cotton has time to soak through properly. This step matters more than most people expect, a dry coil will taste burnt on the very first draw.
Recommended E-Liquids
This coil performs best with high PG or 50/50 e-liquid rather than thicker high VG shortfills, which is exactly what our Vsavi Platinum E-Liquid range is formulated for. If you're switching from smoking, tobacco and menthol flavours like Red Tobacco or Menthol tend to be the most familiar starting point and suit this coil's power range well. If you're after other Innokin coil options for a different device, our Coils page shows the wider range we stock.
Usage and Maintenance Advice
Prime every new coil before vaping it. A few drops of e-liquid directly onto the exposed cotton, then a full tank left to stand for several minutes, gives the wick time to saturate. Never take a puff on a dry coil, even to test it, as this will scorch the wick almost instantly. Most vapers find a Prism S coil lasts somewhere between 3 and 10 days depending on how often they vape and how sweet their chosen e-liquid is, sweeter flavours tend to clog the wicking faster.
Frequently Asked Questions
Which Prism S resistance is right for me, 0.8, 0.9 or 1.5 ohm?
If you're after the tightest, most cigarette-like draw, choose 1.5 ohm. For a bit more vapour and flavour, go for 0.8 ohm. If flavour is your main priority, the 0.9 ohm mesh tends to give the strongest result of the three.
Are these the same coils as the older Innokin T18 range?
No, the Prism S is a different coil platform designed specifically for the Endura T20-S, EZ Watt and Apex tank base, and won't fit the older T18 or T18E tanks.
Can I use the 1.5 ohm coil in an Innokin Apex?
No, the Apex tank only accepts the 0.8 ohm and 0.9 ohm mesh versions. The 1.5 ohm is built for the T20-S and EZ Watt.
How long should a Prism S coil last?
Generally between 3 and 10 days, though this depends heavily on how often you vape and the sugar content of your e-liquid. Sweeter juices tend to shorten coil life.
Why does my brand new coil already taste burnt?
This usually means it wasn't primed correctly. Make sure the tank is fully filled and left to stand for several minutes before you take your first puff.
Can I use nic salts in this coil?
Nic salts are generally designed for lower-power pod kits, while the Prism S runs between 13W and 18W. A 50/50 or high PG e-liquid at a comparable strength usually performs better here.
Will shortfill or high VG e-liquid work with this coil?
It's not recommended. The Prism S and the tanks it fits are built around thinner, high PG e-liquid, and high VG juice is likely to cause dry hits and a shortened coil lifespan.
How do I tell when it's time to change the coil?
Signs to look out for include a burnt or muted taste, a gurgling sound, weaker vapour, or visible darkening around the airflow slots.
Is the Innokin Prism S coil TPD compliant?
Yes, all three resistances are registered with the MHRA under UK TPD regulations. Compliance information is correct at the time of writing, and we'd recommend checking the MHRA public register for the latest status.
If my coil burns out, do I need a new tank too?
Not usually. A burnt coil rarely affects the tank itself, so replacing just the coil is normally enough, provided the glass and seals are still in good condition.
Is this a good starter product if I'm new to switching from smoking?
The devices this coil fits (the T20-S in particular) are aimed squarely at smokers switching over, thanks to their tight, cigarette-style draw. If you're just starting out, the 1.5 ohm coil paired with a tobacco or menthol e-liquid is the closest match to a familiar smoking sensation.
Can this coil be used in tanks from other brands?
No, it's a proprietary fit for Innokin's Prism S tank system only and won't screw into tanks from other manufacturers.