Fenix E20 V2.0 AA vs ThruNite TC15 V3 size comparison
The ThruNite TC15 V3 is 5 mm (0.20 in) shorter than the Fenix E20 V2.0 AA, and 6 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The ThruNite TC15 V3 is 5 mm (0.20 in) shorter than the Fenix E20 V2.0 AA, and 6 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Fenix E20 V2.0 AA Check price ↗ | ThruNite TC15 V3 Check price ↗ | |
| Length | 127 mm (5.00 in) | 122 mm (4.80 in)−5 mm |
| Head / width | 21 mm (0.83 in) | 27 mm (1.06 in)+6 mm |
| Body | 16.8 mm (0.66 in) | 23 mm (0.91 in)+6.2 mm |
| Weight | 42 g without battery | 74 g listed |
| Battery | 2x AA | 18650 |
| Max output | 350 lm | 2,403 lm |
| Throw | 126 m | 223 m |
| Type | EDC | EDC |
| Price | $44.95 at fenixlighting.com, as of Nov 4, 2026 | $59.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced Retailer lists W 27 x H 23 mm |
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E20 V2.0 AA vs TC15 V3: how they differ
Size and weight
The ThruNite TC15 V3 is the shorter light: 122 mm (4.80 in) against 127 mm (5.00 in), a difference of 5 mm (4%). At its widest point the Fenix E20 V2.0 AA is 6 mm slimmer (21 vs 27 mm). Weights are published on different bases (Fenix E20 V2.0 AA: 42 g without battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Brightness and throw
The ThruNite TC15 V3 is rated brighter: 2,403 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 587% more. For beam distance the ThruNite TC15 V3 reaches further: 223 m vs 126 m rated throw (77% more).
Battery
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the ThruNite TC15 V3 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).
Price
When we checked on Nov 4, 2026, the Fenix E20 V2.0 AA was $44.95 at fenixlighting.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the Fenix E20 V2.0 AA cost $15.04 less. Prices change often, so check the current price before you buy.
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 (6 mm narrower). Choose the ThruNite TC15 V3 if you want a shorter light (5 mm shorter), more output (2,403 lm vs 350 lm) and longer throw (223 m vs 126 m). 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 ↗ ThruNite TC15 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E20 V2.0 AA vs TC15 V3 FAQ
Which is smaller, the Fenix E20 V2.0 AA or the ThruNite TC15 V3?
The ThruNite TC15 V3 is the shorter light: 122 mm (4.80 in) against 127 mm (5.00 in), a difference of 5 mm (4%). At its widest point the Fenix E20 V2.0 AA is 6 mm slimmer (21 vs 27 mm). Weights are published on different bases (Fenix E20 V2.0 AA: 42 g without battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Which is brighter, the Fenix E20 V2.0 AA or the ThruNite TC15 V3?
The ThruNite TC15 V3 is rated brighter: 2,403 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 587% more. For beam distance the ThruNite TC15 V3 reaches further: 223 m vs 126 m rated throw (77% more).
Which is cheaper, the Fenix E20 V2.0 AA or the ThruNite TC15 V3?
When we checked on Nov 4, 2026, the Fenix E20 V2.0 AA was $44.95 at fenixlighting.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the Fenix E20 V2.0 AA cost $15.04 less. Prices change often, so check the current price before you buy.
Do the Fenix E20 V2.0 AA and ThruNite TC15 V3 use the same battery?
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the ThruNite TC15 V3 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 ThruNite TC15 V3 with similar lights
More
Sources
- Fenix E20 V2.0 AA: specs from Fenix product page (manufacturer). Drawing: outline from published specs. Price $44.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TC15 V3: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $59.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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