Fenix HM23 V2.0 vs ThruNite TH20 Pro size comparison
The ThruNite TH20 Pro is 6.4 mm (0.25 in) longer than the Fenix HM23 V2.0, and 8 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The ThruNite TH20 Pro is 6.4 mm (0.25 in) longer than the Fenix HM23 V2.0, and 8 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix HM23 V2.0 Check price ↗ | ThruNite TH20 Pro Check price ↗ | |
| Length | 73.6 mm (2.90 in) | 80 mm (3.15 in)+6.4 mm |
| Head / width | 30 mm (1.18 in) | 22 mm (0.87 in)−8 mm |
| Body | — | 20 mm (0.79 in) |
| Thickness | 36 mm (1.42 in) | — |
| Weight | 86.3 g with battery | 58 g listed |
| Battery | 14500 / AA | 14500 |
| Max output | 300 lm | 1,010 lm |
| Throw | 88 m | 141 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $36.95 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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HM23 V2.0 vs TH20 Pro: how they differ
Size and weight
The Fenix HM23 V2.0 is the shorter light: 73.6 mm (2.90 in) against 80 mm (3.15 in), a difference of 6.4 mm (8%). At its widest point the ThruNite TH20 Pro is 8 mm slimmer (22 vs 30 mm). Weights are published on different bases (Fenix HM23 V2.0: 86.3 g with 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 300 lm for the Fenix HM23 V2.0, 237% more. For beam distance the ThruNite TH20 Pro reaches further: 141 m vs 88 m rated throw (60% more).
Battery
The Fenix HM23 V2.0 runs on removable 14500 / AA batteries; the ThruNite TH20 Pro runs on a removable 14500 battery.
Type
Both are headlamps / right-angle lights in our catalog.
Which should you buy?
Choose the Fenix HM23 V2.0 if you want a shorter light (6.4 mm shorter). Choose the ThruNite TH20 Pro if you want a slimmer profile (8 mm narrower), more output (1,010 lm vs 300 lm) and longer throw (141 m vs 88 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HM23 V2.0 Check price ↗ ThruNite TH20 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
HM23 V2.0 vs TH20 Pro FAQ
Which is smaller, the Fenix HM23 V2.0 or the ThruNite TH20 Pro?
The Fenix HM23 V2.0 is the shorter light: 73.6 mm (2.90 in) against 80 mm (3.15 in), a difference of 6.4 mm (8%). At its widest point the ThruNite TH20 Pro is 8 mm slimmer (22 vs 30 mm). Weights are published on different bases (Fenix HM23 V2.0: 86.3 g with battery; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Which is brighter, the Fenix HM23 V2.0 or the ThruNite TH20 Pro?
The ThruNite TH20 Pro is rated brighter: 1,010 lm maximum vs 300 lm for the Fenix HM23 V2.0, 237% more. For beam distance the ThruNite TH20 Pro reaches further: 141 m vs 88 m rated throw (60% more).
Do the Fenix HM23 V2.0 and ThruNite TH20 Pro use the same battery?
The Fenix HM23 V2.0 runs on removable 14500 / AA batteries; the ThruNite TH20 Pro runs on a removable 14500 battery.
Compare Fenix HM23 V2.0 with similar lights
Compare ThruNite TH20 Pro with similar lights
More
Sources
- Fenix HM23 V2.0: specs from Fenix product page (manufacturer). Drawing: outline from published specs. Price $36.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TH20 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. No verified price yet.
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