Fenix LD45R vs Streamlight ProTac HL-X size comparison
The Streamlight ProTac HL-X is 17.3 mm (0.68 in) shorter than the Fenix LD45R, and 7.5 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The Streamlight ProTac HL-X is 17.3 mm (0.68 in) shorter than the Fenix LD45R, and 7.5 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix LD45R Check price ↗ | Streamlight ProTac HL-X Check price ↗ | |
| Length | 155.3 mm (6.11 in) | 138 mm (5.43 in)−17.3 mm |
| Head / width | 44.5 mm (1.75 in) | 37 mm (1.46 in)−7.5 mm |
| Body | 32 mm (1.26 in) | 25 mm (0.98 in)−7 mm |
| Weight | 302 g with battery | 162 g listed |
| Battery | 21700 | 18650 / 2x CR123A |
| Max output | 2,800 lm | 1,000 lm |
| Throw | 480 m | 330 m |
| Type | Tactical | Tactical |
| Price | $159.95 at fenixlighting.com, as of Nov 4, 2026 | from $112.15 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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LD45R vs ProTac HL-X: how they differ
Size and weight
The Streamlight ProTac HL-X is the shorter light: 138 mm (5.43 in) against 155.3 mm (6.11 in), a difference of 17.3 mm (11%). At its widest point the Streamlight ProTac HL-X is 7.5 mm slimmer (37 vs 44.5 mm). Weights are published on different bases (Fenix LD45R: 302 g with battery; Streamlight ProTac HL-X: 162 g listed), so they are not directly comparable.
Brightness and throw
The Fenix LD45R is rated brighter: 2,800 lm maximum vs 1,000 lm for the Streamlight ProTac HL-X, 180% more. For beam distance the Fenix LD45R reaches further: 480 m vs 330 m rated throw (45% more).
Battery
The Fenix LD45R runs on a removable 21700 battery; the Streamlight ProTac HL-X 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 Fenix LD45R was $159.95 at fenixlighting.com and the Streamlight ProTac HL-X from $112.15 at batteryjunction.com, so the Streamlight ProTac HL-X cost $47.80 less. Prices change often, so check the current price before you buy.
Type
Both are tactical lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix LD45R if you want more output (2,800 lm vs 1,000 lm) and longer throw (480 m vs 330 m). Choose the Streamlight ProTac HL-X if you want a shorter light (17.3 mm shorter) and a slimmer profile (7.5 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix LD45R Check price ↗ Streamlight ProTac HL-X
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
LD45R vs ProTac HL-X FAQ
Which is smaller, the Fenix LD45R or the Streamlight ProTac HL-X?
The Streamlight ProTac HL-X is the shorter light: 138 mm (5.43 in) against 155.3 mm (6.11 in), a difference of 17.3 mm (11%). At its widest point the Streamlight ProTac HL-X is 7.5 mm slimmer (37 vs 44.5 mm). Weights are published on different bases (Fenix LD45R: 302 g with battery; Streamlight ProTac HL-X: 162 g listed), so they are not directly comparable.
Which is brighter, the Fenix LD45R or the Streamlight ProTac HL-X?
The Fenix LD45R is rated brighter: 2,800 lm maximum vs 1,000 lm for the Streamlight ProTac HL-X, 180% more. For beam distance the Fenix LD45R reaches further: 480 m vs 330 m rated throw (45% more).
Which is cheaper, the Fenix LD45R or the Streamlight ProTac HL-X?
When we checked on Nov 4, 2026, the Fenix LD45R was $159.95 at fenixlighting.com and the Streamlight ProTac HL-X from $112.15 at batteryjunction.com, so the Streamlight ProTac HL-X cost $47.80 less. Prices change often, so check the current price before you buy.
Do the Fenix LD45R and Streamlight ProTac HL-X use the same battery?
The Fenix LD45R runs on a removable 21700 battery; the Streamlight ProTac HL-X 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 Fenix LD45R with similar lights
Compare Streamlight ProTac HL-X with similar lights
More
Sources
- Fenix LD45R: specs from Fenix product page (manufacturer). Price $159.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Streamlight ProTac HL-X: specs from manufacturer published specs as listed by batteryjunction.com. Price from $112.15 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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