Vape accessories
by Innokin
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The Innokin Jem Pen Coil is a replacement coil designed for the Innokin JEM vape pen that restores your device to full flavour and vapour production. Available in 1.6 Ohm and 2.0 Ohm resistance options, these coils slot straight into your JEM pen and get you back to clean, satisfying draws within seconds. If your vape has started tasting a bit burnt or the vapour output has dropped off, a fresh coil is almost always the fix.
The two ohm ratings change how the JEM pen feels in your mouth and how much vapour you get. Here is the practical difference:
| Resistance | Draw Style | Vapour | Flavour | Battery Life |
|---|---|---|---|---|
| 1.6 Ohm | Mouth-to-lung, slightly looser | More vapour | Warmer, fuller | Slightly shorter |
| 2.0 Ohm | Mouth-to-lung, tighter | Less vapour | Cooler, crisper | Longer lasting |
If you want a draw that feels closer to a cigarette, go with the 2.0 Ohm. If you prefer a bit more warmth and cloud, the 1.6 Ohm is the one. We'd pick the 1.6 Ohm for fruit and dessert e-liquids and the 2.0 Ohm for tobacco and menthol — the tighter draw suits those profiles better.
These are the specs you need to confirm compatibility with your device. The Innokin JEM coils only fit the JEM pen — they will not work with other Innokin devices like the Endura T18 or T20.
| Spec | Value |
|---|---|
| Brand | Innokin |
| Compatible Device | Innokin JEM Vape Pen |
| Resistance Options | 1.6 Ohm / 2.0 Ohm |
| Vaping Style | Mouth-to-lung (MTL) |
| Coil Type | Replaceable bottom coil |
| Tank Capacity (JEM pen) | 2 ml |
| Battery Capacity (JEM pen) | 1,000 mAh |
| SKU | VS0221 |
Complete your setup: if your JEM pen's tank is looking scratched or the seals are wearing out, grab a full Innokin JEM Pen Kit to start fresh. Pair these coils with a quality mouth-to-lung e-liquid for the best results — thinner, higher-PG juices work noticeably better with the JEM's coil design than thick, high-VG blends.
A coil is the part of your vape pen that heats the e-liquid and turns it into vapour. Over time — typically every 1 to 3 weeks depending on how heavily you vape — the cotton wick inside the coil degrades and the wire element builds up residue. The first sign is usually a slightly muted flavour, like someone turned the volume down on your e-liquid. Then comes the burnt taste. That is not your juice going bad; it is your coil telling you it is done.
We've seen plenty of people come in thinking their entire JEM pen is broken when all they needed was a coil swap. It is genuinely one of the most common issues we hear about. A fresh coil brings back the full flavour profile of your e-liquid immediately — you will notice the difference from the very first draw. The cotton is clean, the wire is fresh, and everything tastes the way the manufacturer intended.
One honest watch-out: if you chain-vape heavily or use very sweet e-liquids, expect to go through coils faster. Sweetener in e-liquid caramelises on the coil and gunks it up quicker than unsweetened juice. You might get a week out of a coil instead of two or three. That is not a fault with the coil — it is just the nature of the beast. Keeping a few spares on hand means you are never stuck with a burnt-tasting vape.
After years of selling vape gear, we have a few observations that are not on any spec sheet. The JEM pen's 1,000 mAh battery and 2 ml tank capacity make it a pocket-friendly device, but that small tank means you are refilling more often — and every refill is a chance to check your coil. Give it a look when you top up. If the cotton looks dark brown or black through the juice holes, swap it out. Waiting until it tastes burnt means you have already had several bad draws you did not need to have.
The weight of these coils is almost nothing — you will barely feel the difference between a new one and an old one in your hand. But screw a fresh one in and take a draw? Night and day. The vapour feels cleaner, the flavour is sharper, and the throat hit on the 2.0 Ohm in particular has a satisfying tightness that loosens up noticeably when the coil is past its prime. That tactile feedback is actually the best indicator — if the draw feels softer than it used to, the coil is on its way out.
Compared to coils for something like the Aspire Nautilus range, the JEM coils are a simpler, more compact design. They do not produce as much vapour as a sub-ohm coil, but that is the point — mouth-to-lung vaping is about flavour concentration and a cigarette-like draw, not cloud production. If you want bigger clouds, you are looking at a different device entirely. For what the JEM pen is designed to do, these coils deliver exactly what they should.
Every 1-3 weeks depending on usage. Heavy vapers and those using sweet e-liquids will need to change closer to the 1-week mark. A burnt or muted taste is your clearest signal.
No. The JEM coils are specific to the Innokin JEM pen. They will not fit the Endura T18, T20, or any other Innokin tank. Always match the coil to the exact device model.
The 1.6 Ohm coil runs slightly warmer and produces more vapour. The 2.0 Ohm coil gives a tighter, cooler draw closer to a traditional cigarette. Both are mouth-to-lung coils.
You likely did not prime it. Add 2-3 drops of e-liquid to the cotton wicking holes before installing, then let the filled tank sit for 3-5 minutes. This saturates the wick and prevents dry hits.
Not well. The JEM coil's small wicking ports struggle with thick, high-VG juice (70% VG or above). Stick to 50/50 or higher-PG blends for the best wicking and flavour.
Rinsing in warm water and air-drying can extend life by a day or two in a pinch, but it will not restore full flavour. The cotton degrades permanently. Replacement is always the better option.
Yes — it is specifically designed for MTL draws. Both the 1.6 and 2.0 Ohm coils produce a restricted airflow that mimics the feel of a cigarette, making the JEM pen one of the best straightforward MTL setups at its price point.
Last updated: April 2026
