Nitecore P20iX vs Streamlight ProTac 2L-X USB size comparison
The Streamlight ProTac 2L-X USB is 10.9 mm (0.43 in) shorter than the Nitecore P20iX, and 4.9 mm narrower at its widest point. Weights are published on different bases (with battery vs listed (battery unspecified)), so compare them with care.
The Streamlight ProTac 2L-X USB is 10.9 mm (0.43 in) shorter than the Nitecore P20iX, and 4.9 mm narrower at its widest point. Weights are published on different bases (with battery vs listed (battery unspecified)), so compare them with care.
Dimensions
| Nitecore P20iX Check price ↗ | Streamlight ProTac 2L-X USB Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 130.6 mm (5.14 in)−10.9 mm |
| Head / width | 31.8 mm (1.25 in) | 26.9 mm (1.06 in)−4.9 mm |
| Body | 25.4 mm (1.00 in) | 23.9 mm (0.94 in)−1.5 mm |
| Weight | 116 g listed (battery unspecified) | 125 g with battery |
| Battery | 21700 | 18650 / 2x CR123A |
| Max output | 4,000 lm | 500 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $119.95 at nitecorestore.com, as of Nov 4, 2026 | $83.05 at batteryjunction.com, as of Nov 4, 2026 |
| Source | nitecorestore.com sourced Listed L-5.57" x W-1.25" x H-1.00", 4.09 oz; converted | batteryjunction.com sourced |
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P20iX vs ProTac 2L-X USB: how they differ
Size and weight
The Streamlight ProTac 2L-X USB is the shorter light: 130.6 mm (5.14 in) against 141.5 mm (5.57 in), a difference of 10.9 mm (8%). At its widest point the Streamlight ProTac 2L-X USB is 4.9 mm slimmer (26.9 vs 31.8 mm). Weights are published on different bases (Nitecore P20iX: 116 g listed (battery unspecified); Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Brightness and throw
The Nitecore P20iX is rated brighter: 4,000 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 700% more.
Battery
The Nitecore P20iX runs on a removable 21700 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Nitecore P20iX was $119.95 at nitecorestore.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 2L-X USB cost $36.90 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 Nitecore P20iX if you want more output (4,000 lm vs 500 lm). Choose the Streamlight ProTac 2L-X USB if you want a shorter light (10.9 mm shorter) and 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 ↗ Nitecore P20iX 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
P20iX vs ProTac 2L-X USB FAQ
Which is smaller, the Nitecore P20iX or the Streamlight ProTac 2L-X USB?
The Streamlight ProTac 2L-X USB is the shorter light: 130.6 mm (5.14 in) against 141.5 mm (5.57 in), a difference of 10.9 mm (8%). At its widest point the Streamlight ProTac 2L-X USB is 4.9 mm slimmer (26.9 vs 31.8 mm). Weights are published on different bases (Nitecore P20iX: 116 g listed (battery unspecified); Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Which is brighter, the Nitecore P20iX or the Streamlight ProTac 2L-X USB?
The Nitecore P20iX is rated brighter: 4,000 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 700% more.
Which is cheaper, the Nitecore P20iX or the Streamlight ProTac 2L-X USB?
When we checked on Nov 4, 2026, the Nitecore P20iX was $119.95 at nitecorestore.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 2L-X USB cost $36.90 less. Prices change often, so check the current price before you buy.
Do the Nitecore P20iX and Streamlight ProTac 2L-X USB use the same battery?
The Nitecore P20iX runs on a removable 21700 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Nitecore P20iX with similar lights
Compare Streamlight ProTac 2L-X USB with similar lights
More
Sources
- Nitecore P20iX: specs from manufacturer published specs as listed by nitecorestore.com. Drawing: outline from published specs. Price $119.95 from nitecorestore.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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