Sofirn SP36 Pro vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 1.7 mm (0.07 in) shorter than the Sofirn SP36 Pro, and 15 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The ThruNite TC20 V3 is 1.7 mm (0.07 in) shorter than the Sofirn SP36 Pro, and 15 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Sofirn SP36 Pro Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 126.7 mm (4.99 in) | 125 mm (4.92 in)−1.7 mm |
| Head / width | 50 mm (1.97 in) | 35 mm (1.38 in)−15 mm |
| Body | — | 28 mm (1.10 in) |
| Weight | 300 g without battery | 197 g with battery |
| Battery | 3x 18650 | 21700 |
| Max output | 8,000 lm | 4,720 lm |
| Throw | — | — |
| Type | Thrower / search | EDC |
| Price | from $56.99 at flashlightgo.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Only head diameter listed | batteryjunction.com sourced |
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SP36 Pro vs TC20 V3: how they differ
Size and weight
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 126.7 mm (4.99 in), a difference of 1.7 mm (1%). At its widest point the ThruNite TC20 V3 is 15 mm slimmer (35 vs 50 mm). Weights are published on different bases (Sofirn SP36 Pro: 300 g without battery; ThruNite TC20 V3: 197 g with battery), so they are not directly comparable.
Brightness and throw
The Sofirn SP36 Pro is rated brighter: 8,000 lm maximum vs 4,720 lm for the ThruNite TC20 V3, 69% more.
Battery
The Sofirn SP36 Pro runs on removable 3x 18650 batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Sofirn SP36 Pro was from $56.99 at flashlightgo.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Sofirn SP36 Pro cost $22.96 less. Prices change often, so check the current price before you buy.
Type
The Sofirn SP36 Pro is listed as thrower / search and the ThruNite TC20 V3 as edc, so they suit different jobs.
Which should you buy?
Choose the Sofirn SP36 Pro if you want more output (8,000 lm vs 4,720 lm). Choose the ThruNite TC20 V3 if you want a slimmer profile (15 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Sofirn SP36 Pro Check price ↗ ThruNite TC20 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
SP36 Pro vs TC20 V3 FAQ
Which is smaller, the Sofirn SP36 Pro or the ThruNite TC20 V3?
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 126.7 mm (4.99 in), a difference of 1.7 mm (1%). At its widest point the ThruNite TC20 V3 is 15 mm slimmer (35 vs 50 mm). Weights are published on different bases (Sofirn SP36 Pro: 300 g without battery; ThruNite TC20 V3: 197 g with battery), so they are not directly comparable.
Which is brighter, the Sofirn SP36 Pro or the ThruNite TC20 V3?
The Sofirn SP36 Pro is rated brighter: 8,000 lm maximum vs 4,720 lm for the ThruNite TC20 V3, 69% more.
Which is cheaper, the Sofirn SP36 Pro or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the Sofirn SP36 Pro was from $56.99 at flashlightgo.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Sofirn SP36 Pro cost $22.96 less. Prices change often, so check the current price before you buy.
Do the Sofirn SP36 Pro and ThruNite TC20 V3 use the same battery?
The Sofirn SP36 Pro runs on removable 3x 18650 batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Sofirn SP36 Pro with similar lights
Compare ThruNite TC20 V3 with similar lights
More
Sources
- Sofirn SP36 Pro: specs from manufacturer published specs as listed by flashlightgo.com. Price from $56.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- ThruNite TC20 V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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