Convoy M21B vs Nitecore EDC27 UHi size comparison
The Nitecore EDC27 UHi is 6.1 mm (0.24 in) shorter than the Convoy M21B, and 4.2 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Nitecore EDC27 UHi is 6.1 mm (0.24 in) shorter than the Convoy M21B, and 4.2 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| Convoy M21B Check price ↗ | Nitecore EDC27 UHi Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 135.4 mm (5.33 in)−6.1 mm |
| Head / width | 35.7 mm (1.41 in) | 31.5 mm (1.24 in)−4.2 mm |
| Body | 27.1 mm (1.07 in) | — |
| Thickness | — | 22.1 mm (0.87 in) |
| Weight | 120 g listed | 122 g with battery |
| Battery | 21700 | Built-in |
| Max output | — | 3,100 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $89.95 at nitecorestore.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | nitecorestore.com sourced Listed L-5.33" x W-1.24" x H-0.87", 4.3 oz; converted from inches |
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M21B vs EDC27 UHi: how they differ
Size and weight
The Nitecore EDC27 UHi is the shorter light: 135.4 mm (5.33 in) against 141.5 mm (5.57 in), a difference of 6.1 mm (4%). At its widest point the Nitecore EDC27 UHi is 4.2 mm slimmer (31.5 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC27 UHi: 122 g with battery), so they are not directly comparable.
Brightness and throw
The Nitecore EDC27 UHi is rated at 3,100 lm; we have no published maximum for the Convoy M21B. Output for the Convoy M21B depends on the LED option chosen.
Battery
The Convoy M21B runs on a removable 21700 battery; the Nitecore EDC27 UHi runs on a built-in rechargeable battery. Only the Convoy M21B lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore EDC27 UHi $89.95 at nitecorestore.com, so the Convoy M21B cost $40.96 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 Convoy M21B if you want a removable cell you can swap. Choose the Nitecore EDC27 UHi if you want a shorter light (6.1 mm shorter), a slimmer profile (4.2 mm narrower) 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 ↗ Convoy M21B Check price ↗ Nitecore EDC27 UHi
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M21B vs EDC27 UHi FAQ
Which is smaller, the Convoy M21B or the Nitecore EDC27 UHi?
The Nitecore EDC27 UHi is the shorter light: 135.4 mm (5.33 in) against 141.5 mm (5.57 in), a difference of 6.1 mm (4%). At its widest point the Nitecore EDC27 UHi is 4.2 mm slimmer (31.5 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC27 UHi: 122 g with battery), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Nitecore EDC27 UHi?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore EDC27 UHi $89.95 at nitecorestore.com, so the Convoy M21B cost $40.96 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Nitecore EDC27 UHi use the same battery?
The Convoy M21B runs on a removable 21700 battery; the Nitecore EDC27 UHi runs on a built-in rechargeable battery. Only the Convoy M21B lets you swap in a charged spare.
Compare Convoy M21B with similar lights
Compare Nitecore EDC27 UHi with similar lights
More
Sources
- Convoy M21B: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: outline from published specs. Price $48.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Nitecore EDC27 UHi: specs from manufacturer published specs as listed by nitecorestore.com. Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $89.95 from nitecorestore.com, checked Nov 4, 2026; prices change often.
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