Fenix E20 V2.0 AA vs Sofirn SC31 Pro size comparison
The Sofirn SC31 Pro is 9.5 mm (0.37 in) shorter than the Fenix E20 V2.0 AA, and 4.4 mm wider at its widest point. It is 17 g heavier (without battery).
The Sofirn SC31 Pro is 9.5 mm (0.37 in) shorter than the Fenix E20 V2.0 AA, and 4.4 mm wider at its widest point. It is 17 g heavier (without battery).
Dimensions
| Fenix E20 V2.0 AA Check price ↗ | Sofirn SC31 Pro Check price ↗ | |
| Length | 127 mm (5.00 in) | 117.5 mm (4.63 in)−9.5 mm |
| Head / width | 21 mm (0.83 in) | 25.4 mm (1.00 in)+4.4 mm |
| Body | 16.8 mm (0.66 in) | — |
| Weight | 42 g without battery | 59 g without battery+17 g |
| Battery | 2x AA | 18650 |
| Max output | 350 lm | 2,000 lm |
| Throw | 126 m | — |
| Type | EDC | EDC |
| Price | $44.95 at fenixlighting.com, as of Nov 4, 2026 | not verified yet |
| Source | fenixlighting.com sourced | sofirnlight.com sourced Only head diameter listed |
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E20 V2.0 AA vs SC31 Pro: how they differ
Size and weight
The Sofirn SC31 Pro is the shorter light: 117.5 mm (4.63 in) against 127 mm (5.00 in), a difference of 9.5 mm (7%). At its widest point the Fenix E20 V2.0 AA is 4.4 mm slimmer (21 vs 25.4 mm). The Fenix E20 V2.0 AA is 17 g lighter (42 g vs 59 g, without battery).
Brightness and throw
The Sofirn SC31 Pro is rated brighter: 2,000 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 471% more.
Battery
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the Sofirn SC31 Pro runs on a removable 18650 battery. For scale, a AA cell is about 14.5 × 50.5 mm and a 18650 about 18 × 65 mm (nominal).
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix E20 V2.0 AA if you want a slimmer profile (4.4 mm narrower) and less weight (17 g lighter). Choose the Sofirn SC31 Pro if you want a shorter light (9.5 mm shorter) and more output (2,000 lm vs 350 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix E20 V2.0 AA Check price ↗ Sofirn SC31 Pro
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E20 V2.0 AA vs SC31 Pro FAQ
Which is smaller, the Fenix E20 V2.0 AA or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is the shorter light: 117.5 mm (4.63 in) against 127 mm (5.00 in), a difference of 9.5 mm (7%). At its widest point the Fenix E20 V2.0 AA is 4.4 mm slimmer (21 vs 25.4 mm). The Fenix E20 V2.0 AA is 17 g lighter (42 g vs 59 g, without battery).
Which is brighter, the Fenix E20 V2.0 AA or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is rated brighter: 2,000 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 471% more.
Do the Fenix E20 V2.0 AA and Sofirn SC31 Pro use the same battery?
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the Sofirn SC31 Pro runs on a removable 18650 battery. For scale, a AA cell is about 14.5 × 50.5 mm and a 18650 about 18 × 65 mm (nominal).
Compare Fenix E20 V2.0 AA with similar lights
Compare Sofirn SC31 Pro with similar lights
More
Sources
- Fenix E20 V2.0 AA: specs from Fenix product page (manufacturer). Price $44.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Sofirn SC31 Pro: specs from manufacturer published specs as listed by sofirnlight.com. No verified price yet.
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