Streamlight ProTac 1L-1AA vs Streamlight ProTac 2L-X USB size comparison
The Streamlight ProTac 2L-X USB is 22.6 mm (0.89 in) longer than the Streamlight ProTac 1L-1AA, and 2.9 mm wider at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Streamlight ProTac 2L-X USB is 22.6 mm (0.89 in) longer than the Streamlight ProTac 1L-1AA, and 2.9 mm wider at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| Streamlight ProTac 1L-1AA Check price ↗ | Streamlight ProTac 2L-X USB Check price ↗ | |
| Length | 108 mm (4.25 in) | 130.6 mm (5.14 in)+22.6 mm |
| Head / width | 24 mm (0.94 in) | 26.9 mm (1.06 in)+2.9 mm |
| Body | 22 mm (0.87 in) | 23.9 mm (0.94 in)+1.9 mm |
| Weight | 71 g listed | 125 g with battery |
| Battery | CR123A / AA | 18650 / 2x CR123A |
| Max output | 350 lm | 500 lm |
| Throw | 105 m | — |
| Type | EDC | EDC |
| Price | $56.45 at batteryjunction.com, as of Nov 4, 2026 | $83.05 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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ProTac 1L-1AA vs ProTac 2L-X USB: how they differ
Size and weight
The Streamlight ProTac 1L-1AA is the shorter light: 108 mm (4.25 in) against 130.6 mm (5.14 in), a difference of 22.6 mm (17%). At its widest point the Streamlight ProTac 1L-1AA is 2.9 mm slimmer (24 vs 26.9 mm). Weights are published on different bases (Streamlight ProTac 1L-1AA: 71 g listed; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Brightness and throw
The Streamlight ProTac 2L-X USB is rated brighter: 500 lm maximum vs 350 lm for the Streamlight ProTac 1L-1AA, 43% more.
Battery
The Streamlight ProTac 1L-1AA runs on removable CR123A / AA batteries; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. For scale, a CR123A cell is about 17 × 34.5 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Streamlight ProTac 1L-1AA was $56.45 at batteryjunction.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 1L-1AA cost $26.60 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 1L-1AA if you want a shorter light (22.6 mm shorter) and a slimmer profile (2.9 mm narrower). Choose the Streamlight ProTac 2L-X USB if you want more output (500 lm vs 350 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Streamlight ProTac 1L-1AA Check price ↗ Streamlight ProTac 2L-X USB
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
ProTac 1L-1AA vs ProTac 2L-X USB FAQ
Which is smaller, the Streamlight ProTac 1L-1AA or the Streamlight ProTac 2L-X USB?
The Streamlight ProTac 1L-1AA is the shorter light: 108 mm (4.25 in) against 130.6 mm (5.14 in), a difference of 22.6 mm (17%). At its widest point the Streamlight ProTac 1L-1AA is 2.9 mm slimmer (24 vs 26.9 mm). Weights are published on different bases (Streamlight ProTac 1L-1AA: 71 g listed; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Which is brighter, the Streamlight ProTac 1L-1AA or the Streamlight ProTac 2L-X USB?
The Streamlight ProTac 2L-X USB is rated brighter: 500 lm maximum vs 350 lm for the Streamlight ProTac 1L-1AA, 43% more.
Which is cheaper, the Streamlight ProTac 1L-1AA or the Streamlight ProTac 2L-X USB?
When we checked on Nov 4, 2026, the Streamlight ProTac 1L-1AA was $56.45 at batteryjunction.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 1L-1AA cost $26.60 less. Prices change often, so check the current price before you buy.
Do the Streamlight ProTac 1L-1AA and Streamlight ProTac 2L-X USB use the same battery?
The Streamlight ProTac 1L-1AA runs on removable CR123A / AA batteries; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. For scale, a CR123A cell is about 17 × 34.5 mm and a 18650 about 18 × 65 mm (nominal).
Compare Streamlight ProTac 1L-1AA with similar lights
Compare Streamlight ProTac 2L-X USB with similar lights
More
Sources
- Streamlight ProTac 1L-1AA: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $56.45 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- 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.
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