The Eleaf iStick XC100 and GeekVape Aegis Mini 5 both land at 100 W and include a display, putting them on similar footing for basic power output. Beyond that headline number, the two devices are built around different priorities, from battery setup to coil compatibility.
This comparison sticks to the specs and review notes available for each device, and calls out plainly where there isn’t enough matching data to declare a winner.
| Spec | Eleaf iStick XC100 | GeekVape Aegis Mini 5 |
|---|---|---|
| Image |  |  |
| Max outputPerformance | 100 W | 100 W |
| Battery typeBattery | Single 18650 or 21700 | Not stated |
| Battery capacityBattery | Not stated | 3200 mAh |
| Durability ratingBuild | Not stated | IP67 |
| DisplayConvenience | Yes | Yes |
| Charging portBattery | USB Type-C | Type-C |
| Coil/tank compatibilityCapacity | EC-D, EC-A, EC-2, EC-M, EC-N | Universal 510 |
| Vaping stylePerformance | DTL | MTL / DTL |
| Safety protectionsBuild | Over-charge, low battery, over-current, over 10s cutoff, short circuit, reverse polarity | Not stated |
| Build materialBuild | Aluminum alloy | tri-proof |
| Best US priceat time of comparison | $39.99* | $58.99* |
| Read Review & Best Price | Read Review & Best Price |
* Lowest US price we found on 26 Aug 2026. Prices change often — see each review below for live pricing.
Performance
Both devices max out at 100 W, and both include a display for monitoring settings, so this category is a tie on the specs provided. The Eleaf iStick XC100 lists DTL as its vaping style, while the GeekVape Aegis Mini 5 covers both MTL and DTL, but since vaping style isn’t part of the performance figures compared here, it doesn’t change the tie on output.
Battery
The Eleaf iStick XC100 uses a single removable 18650 or 21700 cell, giving owners the option to swap batteries, but no capacity figure is stated for it. The GeekVape Aegis Mini 5 has a built-in 3200 mAh battery, a concrete number, but its battery type isn’t specified. Because one side lacks a capacity figure and the other lacks a stated battery type, there’s no like-for-like way to compare them, so this category is insufficient evidence.
Build
The Eleaf iStick XC100 is made of aluminum alloy, while the GeekVape Aegis Mini 5 uses a tri-proof build and carries an IP67 durability rating. No durability rating is stated for the Eleaf iStick XC100, and no equivalent protection claim is given for the Aegis Mini 5’s material beyond “tri-proof.” Without a shared metric like an IP rating on both sides, build quality can’t be fairly judged, so this remains insufficient evidence.
Convenience
Both devices charge over Type-C (listed as “USB Type-C” for the Eleaf iStick XC100 and “Type-C” for the GeekVape Aegis Mini 5) and both include a display, which is why this category is called a tie. Differences in coil compatibility and vaping style exist between the two, but those fall outside the specific convenience specs compared here.
Capacity
The GeekVape Aegis Mini 5 states a 3200 mAh battery capacity, while no capacity figure is given for the Eleaf iStick XC100 despite its removable-cell design. A single-sided number without a comparable figure from the other product isn’t enough to declare a winner, so this category is insufficient evidence.
The Eleaf iStick XC100 suits vapers who want the flexibility of a removable 18650 or 21700 battery and access to Eleaf's EC-series coil lineup.
The GeekVape Aegis Mini 5 suits vapers who want a stated 3200 mAh built-in battery, an IP67 durability rating, and universal 510 tank compatibility.
The verdict
Neither device comes out ahead across the board. The Eleaf iStick XC100 and GeekVape Aegis Mini 5 tie on max output and basic convenience features like display and Type-C charging, while battery, build, and capacity comparisons are held back by specs that aren’t stated on one side or the other. Choosing between them comes down to specifics not fully covered here, such as whether a removable-battery format or a stated IP rating and capacity figure matters more to the buyer.