Fenix HP16R vs ThruNite TH20 Pro size comparison
The ThruNite TH20 Pro is 18 mm (0.71 in) longer than the Fenix HP16R, and 10 mm narrower at its widest point. Weights are published on different bases (listed vs with battery and headband), so compare them with care.
The ThruNite TH20 Pro is 18 mm (0.71 in) longer than the Fenix HP16R, and 10 mm narrower at its widest point. Weights are published on different bases (listed vs with battery and headband), so compare them with care.
Dimensions
| Fenix HP16R Check price ↗ | ThruNite TH20 Pro Check price ↗ | |
| Length | 62 mm (2.44 in) | 80 mm (3.15 in)+18 mm |
| Head / width | 32 mm (1.26 in) | 22 mm (0.87 in)−10 mm |
| Body | — | 20 mm (0.79 in) |
| Thickness | 47 mm (1.85 in) | — |
| Weight | 216 g with battery and headband | 58 g listed |
| Battery | Built-in | 14500 |
| Max output | 1,250 lm | 1,010 lm |
| Throw | 255 m | 141 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $109.95 at fenixlighting.com, as of Nov 4, 2026 | not verified yet |
| Source | fenixlighting.com sourced Lamp unit only; separate battery case 73 x 25 x 69 mm | batteryjunction.com sourced |
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HP16R vs TH20 Pro: how they differ
Size and weight
The Fenix HP16R is the shorter light: 62 mm (2.44 in) against 80 mm (3.15 in), a difference of 18 mm (23%). At its widest point the ThruNite TH20 Pro is 10 mm slimmer (22 vs 32 mm). Weights are published on different bases (Fenix HP16R: 216 g with battery and headband; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Brightness and throw
The Fenix HP16R is rated brighter: 1,250 lm maximum vs 1,010 lm for the ThruNite TH20 Pro, 24% more. For beam distance the Fenix HP16R reaches further: 255 m vs 141 m rated throw (81% more).
Battery
The Fenix HP16R runs on a built-in rechargeable battery; the ThruNite TH20 Pro runs on a removable 14500 battery. Only the ThruNite TH20 Pro lets you swap in a charged spare.
Type
Both are headlamps / right-angle lights in our catalog.
Which should you buy?
Choose the Fenix HP16R if you want a shorter light (18 mm shorter), more output (1,250 lm vs 1,010 lm), longer throw (255 m vs 141 m) and a built-in battery with no separate cell to buy. Choose the ThruNite TH20 Pro if you want a slimmer profile (10 mm narrower) and a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HP16R Check price ↗ ThruNite TH20 Pro
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HP16R vs TH20 Pro FAQ
Which is smaller, the Fenix HP16R or the ThruNite TH20 Pro?
The Fenix HP16R is the shorter light: 62 mm (2.44 in) against 80 mm (3.15 in), a difference of 18 mm (23%). At its widest point the ThruNite TH20 Pro is 10 mm slimmer (22 vs 32 mm). Weights are published on different bases (Fenix HP16R: 216 g with battery and headband; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Which is brighter, the Fenix HP16R or the ThruNite TH20 Pro?
The Fenix HP16R is rated brighter: 1,250 lm maximum vs 1,010 lm for the ThruNite TH20 Pro, 24% more. For beam distance the Fenix HP16R reaches further: 255 m vs 141 m rated throw (81% more).
Do the Fenix HP16R and ThruNite TH20 Pro use the same battery?
The Fenix HP16R runs on a built-in rechargeable battery; the ThruNite TH20 Pro runs on a removable 14500 battery. Only the ThruNite TH20 Pro lets you swap in a charged spare.
Compare Fenix HP16R with similar lights
Compare ThruNite TH20 Pro with similar lights
More
Sources
- Fenix HP16R: specs from Fenix product page (manufacturer). Price $109.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TH20 Pro: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
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