Fenix PD35R ACE vs Streamlight ProTac 2L-X USB size comparison
The Streamlight ProTac 2L-X USB is 9.9 mm (0.39 in) shorter than the Fenix PD35R ACE, with about the same max diameter/width. It is 20 g lighter (with battery).
The Streamlight ProTac 2L-X USB is 9.9 mm (0.39 in) shorter than the Fenix PD35R ACE, with about the same max diameter/width. It is 20 g lighter (with battery).
Dimensions
| Fenix PD35R ACE Check price ↗ | Streamlight ProTac 2L-X USB Check price ↗ | |
| Length | 140.5 mm (5.53 in) | 130.6 mm (5.14 in)−9.9 mm |
| Head / width | 26.5 mm (1.04 in) | 26.9 mm (1.06 in)+0.4 mm |
| Body | 23.6 mm (0.93 in) | 23.9 mm (0.94 in)+0.3 mm |
| Weight | 145 g with battery | 125 g with battery−20 g |
| Battery | CR123A | 18650 / 2x CR123A |
| Max output | 2,000 lm | 500 lm |
| Throw | 380 m | — |
| Type | EDC | EDC |
| Price | $85.95 at fenixlighting.com, as of Nov 4, 2026 | $83.05 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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PD35R ACE 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 140.5 mm (5.53 in), a difference of 9.9 mm (7%). At their widest points they are about the same (26.5 vs 26.9 mm). The Streamlight ProTac 2L-X USB is 20 g lighter (125 g vs 145 g, with battery).
Brightness and throw
The Fenix PD35R ACE is rated brighter: 2,000 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 300% more.
Battery
The Fenix PD35R ACE runs on a removable CR123A battery; 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 Fenix PD35R ACE was $85.95 at fenixlighting.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 2L-X USB cost $2.90 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 Fenix PD35R ACE if you want more output (2,000 lm vs 500 lm). Choose the Streamlight ProTac 2L-X USB if you want a shorter light (9.9 mm shorter) and less weight (20 g lighter). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix PD35R ACE Check price ↗ Streamlight ProTac 2L-X USB
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PD35R ACE vs ProTac 2L-X USB FAQ
Which is smaller, the Fenix PD35R ACE or the Streamlight ProTac 2L-X USB?
The Streamlight ProTac 2L-X USB is the shorter light: 130.6 mm (5.14 in) against 140.5 mm (5.53 in), a difference of 9.9 mm (7%). At their widest points they are about the same (26.5 vs 26.9 mm). The Streamlight ProTac 2L-X USB is 20 g lighter (125 g vs 145 g, with battery).
Which is brighter, the Fenix PD35R ACE or the Streamlight ProTac 2L-X USB?
The Fenix PD35R ACE is rated brighter: 2,000 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 300% more.
Which is cheaper, the Fenix PD35R ACE or the Streamlight ProTac 2L-X USB?
When we checked on Nov 4, 2026, the Fenix PD35R ACE was $85.95 at fenixlighting.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Streamlight ProTac 2L-X USB cost $2.90 less. Prices change often, so check the current price before you buy.
Do the Fenix PD35R ACE and Streamlight ProTac 2L-X USB use the same battery?
The Fenix PD35R ACE runs on a removable CR123A battery; 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 Fenix PD35R ACE with similar lights
Compare Streamlight ProTac 2L-X USB with similar lights
More
Sources
- Fenix PD35R ACE: specs from Fenix product page (manufacturer). Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $85.95 from fenixlighting.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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