The SMOK TFOS and the Vaporesso ECO NANO Pro sit at similar price points but take different approaches to battery size and output. This comparison sticks strictly to the confirmed specs for each device, so buyers can see exactly where one pulls ahead and where the numbers simply don’t allow a call.
Below, each category winner has already been determined from the spec table. The explanations focus on why those results make sense given the actual figures, not on marketing claims.
| Spec | SMOK TFOS | Vaporesso ECO NANO Pro |
|---|---|---|
| Image |  |  |
| Battery capacityBattery | 🏆 1700 mAh | 1000 mAh |
| Max outputPerformance | 🏆 35 W | 20 W |
| Battery typeBattery | Internal | Not stated |
| Display screenConvenience | Yes | Yes |
| Adjustable airflowConvenience | Yes | Yes |
| Variable wattagePerformance | Yes | Yes |
| Charge time to 80%Battery | 45 min | 🏆 20 min |
| Charge currentBattery | 🏆 1.55 A | 1 A |
| WeightConvenience | 80 g | 🏆 65 g |
| Coil resistancesPerformance | 0.8ohm installed, 0.6ohm | 0.6Ω LUSH MESH, 0.6Ω MESH, 0.8Ω MESH, 1.2Ω MESH |
| Charging portBattery | Type-C | Type-C |
| Build materialConvenience | Zinc Alloy, ABS plastic | Gunmetal |
| Best US priceat time of comparison | $11.49* | $19.88* |
| Read Review & Best Price | Read Review & Best Price |
* Lowest US price we found on 11 Aug 2026. Prices change often — see each review below for live pricing.
Battery
The SMOK TFOS wins the battery category on the strength of its 1700 mAh internal cell versus the 1000 mAh in the Vaporesso ECO NANO Pro, a meaningful 700 mAh gap that translates into more vaping time between charges. The SMOK TFOS also draws a higher 1.55 A charge current compared to the Vaporesso ECO NANO Pro’s 1 A, which works in its favor for capacity but not necessarily for speed. The Vaporesso ECO NANO Pro does recover to 80% in 20 minutes against the SMOK TFOS’s 45 minutes, so it charges faster, but the category outcome is driven by total capacity and charge current, both of which favor the SMOK TFOS. Battery type is listed as internal for the SMOK TFOS while the Vaporesso ECO NANO Pro’s battery type is not stated, so no comparison is possible on that point.
Performance
The SMOK TFOS takes the performance category with a 35 W max output against the Vaporesso ECO NANO Pro’s 20 W, a clear 15 W advantage that allows for a wider power range. Both devices offer variable wattage and adjustable airflow, so the gap comes down to the ceiling each device can reach rather than the control features available. Coil resistance options differ in format between the two devices, with the SMOK TFOS listing 0.8ohm and 0.6ohm choices and the Vaporesso ECO NANO Pro offering four mesh coil resistances from 0.6Ω to 1.2Ω, but the data isn’t structured in a way that supports a direct winner on that spec.
Convenience
Convenience ends in a tie because the factors pull in opposite directions. The Vaporesso ECO NANO Pro is lighter at 65 g versus 80 g for the SMOK TFOS, and it charges to 80% in 20 minutes against 45 minutes for the SMOK TFOS, both practical day-to-day advantages. At the same time, display screen, adjustable airflow, and variable wattage are all present on both devices, and the charging port is Type-C on each, so there’s no separation there. With the wins and losses balancing out, the category is correctly called a tie.
The SMOK TFOS suits buyers who want a longer-lasting battery and a higher 35 W power ceiling for more flexible vaping sessions.
The Vaporesso ECO NANO Pro suits buyers who prioritize a lighter device and much faster charging over raw battery capacity or output.
The verdict
Neither device comes out ahead across the board. The SMOK TFOS is the stronger choice on battery capacity and power ceiling, backed by its 1700 mAh cell and 35 W max output, while the Vaporesso ECO NANO Pro answers back with a lighter build and notably faster charging. Convenience is a genuine tie, since the two devices split the practical advantages evenly. Which one suits a given buyer depends on whether raw capacity and power or lighter weight and quicker top-ups matter more day to day.