Streamlight ProTac 2L-X USB vs ThruNite Archer 2A V3 size comparison
The ThruNite Archer 2A V3 is 24.4 mm (0.96 in) longer than the Streamlight ProTac 2L-X USB, and 4.9 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
The ThruNite Archer 2A V3 is 24.4 mm (0.96 in) longer than the Streamlight ProTac 2L-X USB, and 4.9 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
Dimensions
| Streamlight ProTac 2L-X USB Check price ↗ | ThruNite Archer 2A V3 Check price ↗ | |
| Length | 130.6 mm (5.14 in) | 155 mm (6.10 in)+24.4 mm |
| Head / width | 26.9 mm (1.06 in) | 22 mm (0.87 in)−4.9 mm |
| Body | 23.9 mm (0.94 in) | 22 mm (0.87 in)−1.9 mm |
| Weight | 125 g with battery | 48 g without battery |
| Battery | 18650 / 2x CR123A | 2x AA |
| Max output | 500 lm | 500 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $83.05 at batteryjunction.com, as of Nov 4, 2026 | $29.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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ProTac 2L-X USB vs Archer 2A V3: how they differ
Size and weight
The Streamlight ProTac 2L-X USB is the shorter light: 130.6 mm (5.14 in) against 155 mm (6.10 in), a difference of 24.4 mm (16%). At its widest point the ThruNite Archer 2A V3 is 4.9 mm slimmer (22 vs 26.9 mm). Weights are published on different bases (Streamlight ProTac 2L-X USB: 125 g with battery; ThruNite Archer 2A V3: 48 g without battery), so they are not directly comparable.
Brightness and throw
Both are rated at 500 lm maximum output.
Battery
The Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries; the ThruNite Archer 2A V3 runs on removable 2x AA batteries. For scale, a 18650 cell is about 18 × 65 mm and a AA about 14.5 × 50.5 mm (nominal).
Price
When we checked on Nov 4, 2026, the Streamlight ProTac 2L-X USB was $83.05 at batteryjunction.com and the ThruNite Archer 2A V3 $29.99 at batteryjunction.com, so the ThruNite Archer 2A V3 cost $53.06 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 Streamlight ProTac 2L-X USB if you want a shorter light (24.4 mm shorter). Choose the ThruNite Archer 2A V3 if you want a slimmer profile (4.9 mm narrower). 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 Archer 2A V3
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ProTac 2L-X USB vs Archer 2A V3 FAQ
Which is smaller, the Streamlight ProTac 2L-X USB or the ThruNite Archer 2A V3?
The Streamlight ProTac 2L-X USB is the shorter light: 130.6 mm (5.14 in) against 155 mm (6.10 in), a difference of 24.4 mm (16%). At its widest point the ThruNite Archer 2A V3 is 4.9 mm slimmer (22 vs 26.9 mm). Weights are published on different bases (Streamlight ProTac 2L-X USB: 125 g with battery; ThruNite Archer 2A V3: 48 g without battery), so they are not directly comparable.
Which is brighter, the Streamlight ProTac 2L-X USB or the ThruNite Archer 2A V3?
Both are rated at 500 lm maximum output.
Which is cheaper, the Streamlight ProTac 2L-X USB or the ThruNite Archer 2A V3?
When we checked on Nov 4, 2026, the Streamlight ProTac 2L-X USB was $83.05 at batteryjunction.com and the ThruNite Archer 2A V3 $29.99 at batteryjunction.com, so the ThruNite Archer 2A V3 cost $53.06 less. Prices change often, so check the current price before you buy.
Do the Streamlight ProTac 2L-X USB and ThruNite Archer 2A V3 use the same battery?
The Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries; the ThruNite Archer 2A V3 runs on removable 2x AA batteries. For scale, a 18650 cell is about 18 × 65 mm and a AA about 14.5 × 50.5 mm (nominal).
Compare Streamlight ProTac 2L-X USB with similar lights
Compare ThruNite Archer 2A V3 with similar lights
More
Sources
- Streamlight ProTac 2L-X USB: specs from manufacturer published specs as listed by batteryjunction.com. Price $83.05 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- ThruNite Archer 2A V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $29.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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