Streamlight ProTac 2L-X USB vs ThruNite TC15 V3 size comparison
The ThruNite TC15 V3 is 8.6 mm (0.34 in) shorter than the Streamlight ProTac 2L-X USB, with about the same max diameter/width. Weights are published on different bases (listed vs with battery), so compare them with care.
The ThruNite TC15 V3 is 8.6 mm (0.34 in) shorter than the Streamlight ProTac 2L-X USB, with about the same max diameter/width. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Streamlight ProTac 2L-X USB Check price ↗ | ThruNite TC15 V3 Check price ↗ | |
| Length | 130.6 mm (5.14 in) | 122 mm (4.80 in)−8.6 mm |
| Head / width | 26.9 mm (1.06 in) | 27 mm (1.06 in)+0.1 mm |
| Body | 23.9 mm (0.94 in) | 23 mm (0.91 in)−0.9 mm |
| Weight | 125 g with battery | 74 g listed |
| Battery | 18650 / 2x CR123A | 18650 |
| Max output | 500 lm | 2,403 lm |
| Throw | — | 223 m |
| Type | EDC | EDC |
| Price | $83.05 at batteryjunction.com, as of Nov 4, 2026 | $59.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced Retailer lists W 27 x H 23 mm |
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ProTac 2L-X USB vs TC15 V3: how they differ
Size and weight
The ThruNite TC15 V3 is the shorter light: 122 mm (4.80 in) against 130.6 mm (5.14 in), a difference of 8.6 mm (7%). At their widest points they are about the same (26.9 vs 27 mm). Weights are published on different bases (Streamlight ProTac 2L-X USB: 125 g with battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Brightness and throw
The ThruNite TC15 V3 is rated brighter: 2,403 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 381% more.
Battery
The Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries; the ThruNite TC15 V3 runs on a removable 18650 battery.
Price
When we checked on Nov 4, 2026, the Streamlight ProTac 2L-X USB was $83.05 at batteryjunction.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the ThruNite TC15 V3 cost $23.06 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 ThruNite TC15 V3 if you want a shorter light (8.6 mm shorter) and more output (2,403 lm vs 500 lm). On the specs we track, the ThruNite TC15 V3 is ahead or level everywhere; the Streamlight ProTac 2L-X USB makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Streamlight ProTac 2L-X USB Check price ↗ ThruNite TC15 V3
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ProTac 2L-X USB vs TC15 V3 FAQ
Which is smaller, the Streamlight ProTac 2L-X USB or the ThruNite TC15 V3?
The ThruNite TC15 V3 is the shorter light: 122 mm (4.80 in) against 130.6 mm (5.14 in), a difference of 8.6 mm (7%). At their widest points they are about the same (26.9 vs 27 mm). Weights are published on different bases (Streamlight ProTac 2L-X USB: 125 g with battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Which is brighter, the Streamlight ProTac 2L-X USB or the ThruNite TC15 V3?
The ThruNite TC15 V3 is rated brighter: 2,403 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 381% more.
Which is cheaper, the Streamlight ProTac 2L-X USB or the ThruNite TC15 V3?
When we checked on Nov 4, 2026, the Streamlight ProTac 2L-X USB was $83.05 at batteryjunction.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the ThruNite TC15 V3 cost $23.06 less. Prices change often, so check the current price before you buy.
Do the Streamlight ProTac 2L-X USB and ThruNite TC15 V3 use the same battery?
The Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries; the ThruNite TC15 V3 runs on a removable 18650 battery.
Compare Streamlight ProTac 2L-X USB with similar lights
Compare ThruNite TC15 V3 with similar lights
More
Sources
- Streamlight ProTac 2L-X USB: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $83.05 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- ThruNite TC15 V3: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $59.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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