Fenix PD36R ACE vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 27 mm (1.06 in) shorter than the Fenix PD36R ACE, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The RovyVon S3 Pro is 27 mm (1.06 in) shorter than the Fenix PD36R ACE, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix PD36R ACE Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 146 mm (5.75 in) | 119 mm (4.69 in)−27 mm |
| Head / width | 30 mm (1.18 in) | 29 mm (1.14 in)−1 mm |
| Body | 26 mm (1.02 in) | 29 mm (1.14 in)+3 mm |
| Weight | 181.6 g with battery | 150 g listed |
| Battery | 21700 | 18650 |
| Max output | 3,000 lm | 2,800 lm |
| Throw | 415 m | 130 m |
| Type | EDC | EDC |
| Price | $109.95 at fenixlighting.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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PD36R ACE vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 146 mm (5.75 in), a difference of 27 mm (18%). At its widest point the RovyVon S3 Pro is 1 mm slimmer (29 vs 30 mm). Weights are published on different bases (Fenix PD36R ACE: 181.6 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The Fenix PD36R ACE is rated brighter: 3,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 7% more. For beam distance the Fenix PD36R ACE reaches further: 415 m vs 130 m rated throw (219% more).
Battery
The Fenix PD36R ACE runs on a removable 21700 battery; the RovyVon S3 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix PD36R ACE was $109.95 at fenixlighting.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $30.00 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 PD36R ACE if you want longer throw (415 m vs 130 m). Choose the RovyVon S3 Pro if you want a shorter light (27 mm shorter). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix PD36R ACE Check price ↗ RovyVon S3 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
PD36R ACE vs S3 Pro FAQ
Which is smaller, the Fenix PD36R ACE or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 146 mm (5.75 in), a difference of 27 mm (18%). At its widest point the RovyVon S3 Pro is 1 mm slimmer (29 vs 30 mm). Weights are published on different bases (Fenix PD36R ACE: 181.6 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Fenix PD36R ACE or the RovyVon S3 Pro?
The Fenix PD36R ACE is rated brighter: 3,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 7% more. For beam distance the Fenix PD36R ACE reaches further: 415 m vs 130 m rated throw (219% more).
Which is cheaper, the Fenix PD36R ACE or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Fenix PD36R ACE was $109.95 at fenixlighting.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $30.00 less. Prices change often, so check the current price before you buy.
Do the Fenix PD36R ACE and RovyVon S3 Pro use the same battery?
The Fenix PD36R ACE runs on a removable 21700 battery; the RovyVon S3 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Fenix PD36R ACE with similar lights
Compare RovyVon S3 Pro with similar lights
More
Sources
- Fenix PD36R ACE: specs from Fenix product page (manufacturer). Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $109.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- RovyVon S3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price from $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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