Convoy M21H vs Fenix LD36R size comparison
The Fenix LD36R is 8.8 mm (0.35 in) longer than the Convoy M21H, with about the same max diameter/width.
The Fenix LD36R is 8.8 mm (0.35 in) longer than the Convoy M21H, with about the same max diameter/width.
Dimensions
| Convoy M21H Check price ↗ | Fenix LD36R Check price ↗ | |
| Length | 130.8 mm (5.15 in) | 139.6 mm (5.50 in)+8.8 mm |
| Head / width | 40 mm (1.57 in) | 40 mm (1.57 in)same |
| Body | 27 mm (1.06 in) | 26.5 mm (1.04 in)−0.5 mm |
| Tail | 28.5 mm (1.12 in) | — |
| Weight | — | 231 g with battery |
| Battery | 21700 | 21700 |
| Max output | — | 3,600 lm |
| Throw | — | 385 m |
| Type | EDC | EDC |
| Price | from $44.95 at nealsgadgets.com, as of Nov 4, 2026 | from $114.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | nealsgadgets.com sourced | fenixlighting.com sourced |
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M21H vs LD36R: how they differ
Size and weight
The Convoy M21H is the shorter light: 130.8 mm (5.15 in) against 139.6 mm (5.50 in), a difference of 8.8 mm (6%). At their widest points they are about the same (40 vs 40 mm).
Brightness and throw
The Fenix LD36R is rated at 3,600 lm; we have no published maximum for the Convoy M21H.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Convoy M21H was from $44.95 at nealsgadgets.com and the Fenix LD36R from $114.95 at fenixlighting.com, so the Convoy M21H cost $70.00 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 Convoy M21H if you want a shorter light (8.8 mm shorter). On the specs we track, the Convoy M21H is ahead or level everywhere; the Fenix LD36R makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Convoy M21H Check price ↗ Fenix LD36R
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21H vs LD36R FAQ
Which is smaller, the Convoy M21H or the Fenix LD36R?
The Convoy M21H is the shorter light: 130.8 mm (5.15 in) against 139.6 mm (5.50 in), a difference of 8.8 mm (6%). At their widest points they are about the same (40 vs 40 mm).
Which is cheaper, the Convoy M21H or the Fenix LD36R?
When we checked on Nov 4, 2026, the Convoy M21H was from $44.95 at nealsgadgets.com and the Fenix LD36R from $114.95 at fenixlighting.com, so the Convoy M21H cost $70.00 less. Prices change often, so check the current price before you buy.
Do the Convoy M21H and Fenix LD36R use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Convoy M21H with similar lights
Compare Fenix LD36R with similar lights
More
Sources
- Convoy M21H: specs from manufacturer published specs as listed by nealsgadgets.com. Drawing: outline from published specs. Price from $44.95 from nealsgadgets.com, checked Nov 4, 2026; prices change often.
- Fenix LD36R: specs from Fenix product page (manufacturer). Drawing: outline from published specs. Price from $114.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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