Fenix E40R vs Fenix LD36R size comparison
The Fenix LD36R is 1.6 mm (0.06 in) longer than the Fenix E40R, and 5 mm wider at its widest point. It is 11 g heavier (with battery).
The Fenix LD36R is 1.6 mm (0.06 in) longer than the Fenix E40R, and 5 mm wider at its widest point. It is 11 g heavier (with battery).
Dimensions
| Fenix E40R Check price ↗ | Fenix LD36R Check price ↗ | |
| Length | 138 mm (5.43 in) | 139.6 mm (5.50 in)+1.6 mm |
| Head / width | 35 mm (1.38 in) | 40 mm (1.57 in)+5 mm |
| Body | 26.4 mm (1.04 in) | 26.5 mm (1.04 in)+0.1 mm |
| Weight | 220 g with battery | 231 g with battery+11 g |
| Battery | 21700 | 21700 |
| Max output | 5,000 lm | 3,600 lm |
| Throw | 242 m | 385 m |
| Type | EDC | EDC |
| Price | $109.95 at fenixlighting.com, as of Nov 4, 2026 | from $114.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Listed 35 mm wide x 26.4 mm high | fenixlighting.com sourced |
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E40R vs LD36R: how they differ
Size and weight
The Fenix E40R is the shorter light: 138 mm (5.43 in) against 139.6 mm (5.50 in), a difference of 1.6 mm (1%). At its widest point the Fenix E40R is 5 mm slimmer (35 vs 40 mm). The Fenix E40R is 11 g lighter (220 g vs 231 g, with battery).
Brightness and throw
The Fenix E40R is rated brighter: 5,000 lm maximum vs 3,600 lm for the Fenix LD36R, 39% more. For beam distance the Fenix LD36R reaches further: 385 m vs 242 m rated throw (59% more).
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Fenix E40R was $109.95 at fenixlighting.com and the Fenix LD36R from $114.95 at fenixlighting.com, so the Fenix E40R cost $5.00 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 E40R if you want a slimmer profile (5 mm narrower) and more output (5,000 lm vs 3,600 lm). Choose the Fenix LD36R if you want longer throw (385 m vs 242 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix E40R Check price ↗ Fenix LD36R
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E40R vs LD36R FAQ
Which is smaller, the Fenix E40R or the Fenix LD36R?
The Fenix E40R is the shorter light: 138 mm (5.43 in) against 139.6 mm (5.50 in), a difference of 1.6 mm (1%). At its widest point the Fenix E40R is 5 mm slimmer (35 vs 40 mm). The Fenix E40R is 11 g lighter (220 g vs 231 g, with battery).
Which is brighter, the Fenix E40R or the Fenix LD36R?
The Fenix E40R is rated brighter: 5,000 lm maximum vs 3,600 lm for the Fenix LD36R, 39% more. For beam distance the Fenix LD36R reaches further: 385 m vs 242 m rated throw (59% more).
Which is cheaper, the Fenix E40R or the Fenix LD36R?
When we checked on Nov 4, 2026, the Fenix E40R was $109.95 at fenixlighting.com and the Fenix LD36R from $114.95 at fenixlighting.com, so the Fenix E40R cost $5.00 less. Prices change often, so check the current price before you buy.
Do the Fenix E40R and Fenix LD36R use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Fenix E40R with similar lights
Compare Fenix LD36R with similar lights
More
Sources
- Fenix E40R: specs from Fenix product page (manufacturer). Price $109.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix LD36R: specs from Fenix product page (manufacturer). Price from $114.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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