The Eleaf iStick XC100 and SMOK X-Priv Solo are both single-battery mod-style devices aimed at users who want more flexibility than a pod system. On paper they share some basics, like a display and a Type-C charging port, but differ in stated output and battery options.
This comparison sticks to the specs and notes provided for each device, and calls out plainly where the data available is not enough to declare a winner.
| Spec | Eleaf iStick XC100 | SMOK X-Priv Solo |
|---|---|---|
| Image |  |  |
| Max outputPerformance | 🏆 100 W | 80 W |
| Battery typeBattery | Single 18650 or 21700 | Single 18650 |
| DisplayConvenience | Yes | Yes |
| Charging portBattery | USB Type-C | Type-C |
| Coil/tank compatibilityCapacity | EC-D, EC-A, EC-2, EC-M, EC-N | SMOK TF-D Sub-Ohm Tank / TFV Mini V2 Tank |
| Vaping stylePerformance | DTL | Not stated |
| Safety protectionsBuild | Over-charge, low battery, over-current, over 10s cutoff, short circuit, reverse polarity | High output warning, overtime, short-circuit, overheating, low-battery warning |
| Build materialBuild | Aluminum alloy | Not stated |
| Best US priceat time of comparison | $39.99* | $39.49* |
| 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
The Eleaf iStick XC100 wins this category on the numbers alone: it lists a max output of 100 W compared to the SMOK X-Priv Solo’s 80 W. A higher wattage ceiling generally gives a device more headroom for sub-ohm coils and higher-vapor setups, so the 20 W gap is a meaningful practical difference for anyone planning to run demanding coils.
Battery
The Eleaf iStick XC100 supports a single 18650 or 21700 battery, while the SMOK X-Priv Solo is listed with a single 18650 only. That suggests the iStick XC100 offers more flexibility in battery choice, but without stated capacity figures (mAh) or runtime data for either device, there isn’t enough evidence to call an overall battery winner.
Convenience
Both devices include a display and a Type-C charging port, so on the specific points documented here they are evenly matched. Neither sheet provides enough differentiating detail, such as menu features or charging speed, to separate them further, which is why this category is a tie.
Capacity
Coil and tank compatibility is listed for each device — the Eleaf iStick XC100 with its EC-series coils, and the SMOK X-Priv Solo with SMOK TF-D and TFV Mini V2 tanks — but there is no shared metric like tank juice capacity (ml) provided for either product, so capacity cannot be judged here.
Build
The Eleaf iStick XC100 specifies an aluminum alloy build, while no build material is stated for the SMOK X-Priv Solo. Since one side of the comparison is simply missing, there isn’t enough evidence to declare a build winner.
The Eleaf iStick XC100 suits vapers who want a higher 100 W ceiling and the option to use either an 18650 or 21700 battery.
The SMOK X-Priv Solo suits vapers focused on its specific TF-D and TFV Mini V2 tank compatibility within an 80 W single-18650 setup.
The verdict
Neither device comes out ahead across the board. The Eleaf iStick XC100 has a clear edge in max output and offers more battery flexibility with 18650/21700 support, while the SMOK X-Priv Solo matches it on the basics of display and Type-C charging. Several categories, including battery life, capacity, and build, simply lack enough comparable data to call a winner, so the choice comes down to which documented strengths matter more to a given buyer rather than one product being better overall.