Olight Perun 3 Mini vs ThruNite TH20 Pro size comparison
The ThruNite TH20 Pro is 16 mm (0.63 in) longer than the Olight Perun 3 Mini, with about the same max diameter/width. Weights are published on different bases (listed vs listed), so compare them with care.
The ThruNite TH20 Pro is 16 mm (0.63 in) longer than the Olight Perun 3 Mini, with about the same max diameter/width. Weights are published on different bases (listed vs listed), so compare them with care.
Dimensions
| Olight Perun 3 Mini Check price ↗ | ThruNite TH20 Pro Check price ↗ | |
| Length | 64 mm (2.52 in) | 80 mm (3.15 in)+16 mm |
| Head / width | 22 mm (0.87 in) | 22 mm (0.87 in)same |
| Body | 22 mm (0.87 in) | 20 mm (0.79 in)−2 mm |
| Weight | 54 g listed | 58 g listed |
| Battery | Built-in | 14500 |
| Max output | 1,250 lm | 1,010 lm |
| Throw | 155 m | 141 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $64.99 at olight.com, as of Nov 4, 2026 | not verified yet |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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Perun 3 Mini vs TH20 Pro: how they differ
Size and weight
The Olight Perun 3 Mini is the shorter light: 64 mm (2.52 in) against 80 mm (3.15 in), a difference of 16 mm (20%). At their widest points they are about the same (22 vs 22 mm). Weights are published on different bases (Olight Perun 3 Mini: 54 g listed; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Brightness and throw
The Olight Perun 3 Mini is rated brighter: 1,250 lm maximum vs 1,010 lm for the ThruNite TH20 Pro, 24% more. For beam distance the Olight Perun 3 Mini reaches further: 155 m vs 141 m rated throw (10% more).
Battery
The Olight Perun 3 Mini 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 with a right-angle body.
Which should you buy?
Choose the Olight Perun 3 Mini if you want a shorter light (16 mm shorter), more output (1,250 lm vs 1,010 lm) and a built-in battery with no separate cell to buy. Choose the ThruNite TH20 Pro if you want a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight Perun 3 Mini Check price ↗ ThruNite TH20 Pro
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Perun 3 Mini vs TH20 Pro FAQ
Which is smaller, the Olight Perun 3 Mini or the ThruNite TH20 Pro?
The Olight Perun 3 Mini is the shorter light: 64 mm (2.52 in) against 80 mm (3.15 in), a difference of 16 mm (20%). At their widest points they are about the same (22 vs 22 mm). Weights are published on different bases (Olight Perun 3 Mini: 54 g listed; ThruNite TH20 Pro: 58 g listed), so they are not directly comparable.
Which is brighter, the Olight Perun 3 Mini or the ThruNite TH20 Pro?
The Olight Perun 3 Mini is rated brighter: 1,250 lm maximum vs 1,010 lm for the ThruNite TH20 Pro, 24% more. For beam distance the Olight Perun 3 Mini reaches further: 155 m vs 141 m rated throw (10% more).
Do the Olight Perun 3 Mini and ThruNite TH20 Pro use the same battery?
The Olight Perun 3 Mini 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 Olight Perun 3 Mini with similar lights
Compare ThruNite TH20 Pro with similar lights
More
Sources
- Olight Perun 3 Mini: specs from Olight product page (manufacturer); manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $64.99 from olight.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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