Fenix UC35 V2.0 USB vs ThruNite TN12 V6 size comparison
The ThruNite TN12 V6 is 6 mm (0.24 in) shorter than the Fenix UC35 V2.0 USB, and 1.6 mm wider at its widest point. Weights are published on different bases (listed (battery unspecified) vs without battery), so compare them with care.
The ThruNite TN12 V6 is 6 mm (0.24 in) shorter than the Fenix UC35 V2.0 USB, and 1.6 mm wider at its widest point. Weights are published on different bases (listed (battery unspecified) vs without battery), so compare them with care.
Dimensions
| Fenix UC35 V2.0 USB Check price ↗ | ThruNite TN12 V6 Check price ↗ | |
| Length | 140 mm (5.51 in) | 134 mm (5.28 in)−6 mm |
| Head / width | 25.4 mm (1.00 in) | 27 mm (1.06 in)+1.6 mm |
| Body | 23.5 mm (0.93 in) | 24 mm (0.94 in)+0.5 mm |
| Weight | 89 g without battery | 88 g listed (battery unspecified) |
| Battery | 18650 / 2x CR123A | 18650 |
| Max output | 1,000 lm | 1,950 lm |
| Throw | 266 m | — |
| Type | EDC | EDC |
| Price | $89.95 at fenixlighting.com, as of Nov 4, 2026 | $39.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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UC35 V2.0 USB vs TN12 V6: how they differ
Size and weight
The ThruNite TN12 V6 is the shorter light: 134 mm (5.28 in) against 140 mm (5.51 in), a difference of 6 mm (4%). At its widest point the Fenix UC35 V2.0 USB is 1.6 mm slimmer (25.4 vs 27 mm). Weights are published on different bases (Fenix UC35 V2.0 USB: 89 g without battery; ThruNite TN12 V6: 88 g listed (battery unspecified)), so they are not directly comparable.
Brightness and throw
The ThruNite TN12 V6 is rated brighter: 1,950 lm maximum vs 1,000 lm for the Fenix UC35 V2.0 USB, 95% more.
Battery
The Fenix UC35 V2.0 USB runs on removable 18650 / 2x CR123A batteries; the ThruNite TN12 V6 runs on a removable 18650 battery.
Price
When we checked on Nov 4, 2026, the Fenix UC35 V2.0 USB was $89.95 at fenixlighting.com and the ThruNite TN12 V6 $39.99 at batteryjunction.com, so the ThruNite TN12 V6 cost $49.96 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix UC35 V2.0 USB if you want a slimmer profile (1.6 mm narrower). Choose the ThruNite TN12 V6 if you want a shorter light (6 mm shorter) and more output (1,950 lm vs 1,000 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix UC35 V2.0 USB Check price ↗ ThruNite TN12 V6
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
UC35 V2.0 USB vs TN12 V6 FAQ
Which is smaller, the Fenix UC35 V2.0 USB or the ThruNite TN12 V6?
The ThruNite TN12 V6 is the shorter light: 134 mm (5.28 in) against 140 mm (5.51 in), a difference of 6 mm (4%). At its widest point the Fenix UC35 V2.0 USB is 1.6 mm slimmer (25.4 vs 27 mm). Weights are published on different bases (Fenix UC35 V2.0 USB: 89 g without battery; ThruNite TN12 V6: 88 g listed (battery unspecified)), so they are not directly comparable.
Which is brighter, the Fenix UC35 V2.0 USB or the ThruNite TN12 V6?
The ThruNite TN12 V6 is rated brighter: 1,950 lm maximum vs 1,000 lm for the Fenix UC35 V2.0 USB, 95% more.
Which is cheaper, the Fenix UC35 V2.0 USB or the ThruNite TN12 V6?
When we checked on Nov 4, 2026, the Fenix UC35 V2.0 USB was $89.95 at fenixlighting.com and the ThruNite TN12 V6 $39.99 at batteryjunction.com, so the ThruNite TN12 V6 cost $49.96 less. Prices change often, so check the current price before you buy.
Do the Fenix UC35 V2.0 USB and ThruNite TN12 V6 use the same battery?
The Fenix UC35 V2.0 USB runs on removable 18650 / 2x CR123A batteries; the ThruNite TN12 V6 runs on a removable 18650 battery.
Compare Fenix UC35 V2.0 USB with similar lights
Compare ThruNite TN12 V6 with similar lights
More
Sources
- Fenix UC35 V2.0 USB: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TN12 V6: specs from manufacturer published specs as listed by batteryjunction.com. Price $39.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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