Fenix HL10 vs ThruNite TH20 Pro size comparison
The ThruNite TH20 Pro is 10 mm (0.39 in) longer than the Fenix HL10, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The ThruNite TH20 Pro is 10 mm (0.39 in) longer than the Fenix HL10, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Fenix HL10 Check price ↗ | ThruNite TH20 Pro Check price ↗ | |
| Length | 70 mm (2.76 in) | 80 mm (3.15 in)+10 mm |
| Head / width | 23 mm (0.91 in) | 22 mm (0.87 in)−1 mm |
| Body | — | 20 mm (0.79 in) |
| Thickness | 26 mm (1.02 in) | — |
| Weight | 33 g without battery | 58 g listed |
| Battery | AAA | 14500 |
| Max output | 70 lm | 1,010 lm |
| Throw | 30 m | 141 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $16.95 at fenixlighting.com, as of Nov 4, 2026 | not verified yet |
| Source | fenixlighting.com sourced Headlamp unit; front view drawn width x height | batteryjunction.com sourced |
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HL10 vs TH20 Pro: how they differ
Size and weight
The Fenix HL10 is the shorter light: 70 mm (2.76 in) against 80 mm (3.15 in), a difference of 10 mm (13%). At its widest point the ThruNite TH20 Pro is 1 mm slimmer (22 vs 23 mm). Weights are published on different bases (Fenix HL10: 33 g without battery; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Brightness and throw
The ThruNite TH20 Pro is rated brighter: 1,010 lm maximum vs 70 lm for the Fenix HL10, 1343% more. For beam distance the ThruNite TH20 Pro reaches further: 141 m vs 30 m rated throw (370% more).
Battery
The Fenix HL10 runs on a removable AAA battery; the ThruNite TH20 Pro runs on a removable 14500 battery. For scale, a AAA cell is about 10.5 × 44.5 mm and a 14500 about 14 × 50 mm (nominal).
Type
Both are headlamps / right-angle lights in our catalog.
Which should you buy?
Choose the Fenix HL10 if you want a shorter light (10 mm shorter). Choose the ThruNite TH20 Pro if you want more output (1,010 lm vs 70 lm) and longer throw (141 m vs 30 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HL10 Check price ↗ ThruNite TH20 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
HL10 vs TH20 Pro FAQ
Which is smaller, the Fenix HL10 or the ThruNite TH20 Pro?
The Fenix HL10 is the shorter light: 70 mm (2.76 in) against 80 mm (3.15 in), a difference of 10 mm (13%). At its widest point the ThruNite TH20 Pro is 1 mm slimmer (22 vs 23 mm). Weights are published on different bases (Fenix HL10: 33 g without battery; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Which is brighter, the Fenix HL10 or the ThruNite TH20 Pro?
The ThruNite TH20 Pro is rated brighter: 1,010 lm maximum vs 70 lm for the Fenix HL10, 1343% more. For beam distance the ThruNite TH20 Pro reaches further: 141 m vs 30 m rated throw (370% more).
Do the Fenix HL10 and ThruNite TH20 Pro use the same battery?
The Fenix HL10 runs on a removable AAA battery; the ThruNite TH20 Pro runs on a removable 14500 battery. For scale, a AAA cell is about 10.5 × 44.5 mm and a 14500 about 14 × 50 mm (nominal).
Compare Fenix HL10 with similar lights
Compare ThruNite TH20 Pro with similar lights
More
Sources
- Fenix HL10: specs from Fenix product page (manufacturer). Price $16.95 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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