Fenix E20 V2.0 AA vs Olight ArkPro size comparison
The Olight ArkPro is 3 mm (0.12 in) shorter than the Fenix E20 V2.0 AA, and 6 mm wider at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Olight ArkPro is 3 mm (0.12 in) shorter than the Fenix E20 V2.0 AA, and 6 mm wider at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Fenix E20 V2.0 AA Check price ↗ | Olight ArkPro Check price ↗ | |
| Length | 127 mm (5.00 in) | 124 mm (4.88 in)−3 mm |
| Head / width | 21 mm (0.83 in) | 27 mm (1.06 in)+6 mm |
| Body | 16.8 mm (0.66 in) | — |
| Thickness | — | 16 mm (0.63 in) |
| Weight | 42 g without battery | 115 g with battery |
| Battery | 2x AA | Built-in |
| Max output | 350 lm | 1,500 lm |
| Throw | 126 m | 205 m |
| Type | EDC | EDC |
| Price | $44.95 at fenixlighting.com, as of Nov 4, 2026 | $109.99 at olight.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | olight.com sourced |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E20 V2.0 AA vs ArkPro: how they differ
Size and weight
The Olight ArkPro is the shorter light: 124 mm (4.88 in) against 127 mm (5.00 in), a difference of 3 mm (2%). 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; Olight ArkPro: 115 g with battery), so they are not directly comparable.
Brightness and throw
The Olight ArkPro is rated brighter: 1,500 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 329% more. For beam distance the Olight ArkPro reaches further: 205 m vs 126 m rated throw (63% more).
Battery
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the Olight ArkPro runs on a built-in rechargeable battery. Only the Fenix E20 V2.0 AA lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Fenix E20 V2.0 AA was $44.95 at fenixlighting.com and the Olight ArkPro $109.99 at olight.com, so the Fenix E20 V2.0 AA cost $65.04 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Fenix E20 V2.0 AA if you want a slimmer profile (6 mm narrower) and a removable cell you can swap. Choose the Olight ArkPro if you want a shorter light (3 mm shorter), more output (1,500 lm vs 350 lm), longer throw (205 m vs 126 m) and a built-in battery with no separate cell to buy. 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 ↗ Olight ArkPro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E20 V2.0 AA vs ArkPro FAQ
Which is smaller, the Fenix E20 V2.0 AA or the Olight ArkPro?
The Olight ArkPro is the shorter light: 124 mm (4.88 in) against 127 mm (5.00 in), a difference of 3 mm (2%). 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; Olight ArkPro: 115 g with battery), so they are not directly comparable.
Which is brighter, the Fenix E20 V2.0 AA or the Olight ArkPro?
The Olight ArkPro is rated brighter: 1,500 lm maximum vs 350 lm for the Fenix E20 V2.0 AA, 329% more. For beam distance the Olight ArkPro reaches further: 205 m vs 126 m rated throw (63% more).
Which is cheaper, the Fenix E20 V2.0 AA or the Olight ArkPro?
When we checked on Nov 4, 2026, the Fenix E20 V2.0 AA was $44.95 at fenixlighting.com and the Olight ArkPro $109.99 at olight.com, so the Fenix E20 V2.0 AA cost $65.04 less. Prices change often, so check the current price before you buy.
Do the Fenix E20 V2.0 AA and Olight ArkPro use the same battery?
The Fenix E20 V2.0 AA runs on removable 2x AA batteries; the Olight ArkPro runs on a built-in rechargeable battery. Only the Fenix E20 V2.0 AA lets you swap in a charged spare.
Compare Fenix E20 V2.0 AA with similar lights
Compare Olight ArkPro 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.
- Olight ArkPro: specs from Olight product page (manufacturer). Price $109.99 from olight.com, checked Nov 4, 2026; prices change often.
Found an error? Email [email protected] and we will fix it.