Convoy M21B vs Nitecore EDC25 size comparison
The Nitecore EDC25 is 5.1 mm (0.20 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 EDC25 is 5.1 mm (0.20 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 EDC25 Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 136.4 mm (5.37 in)−5.1 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 | — | 21.3 mm (0.84 in) |
| Weight | 120 g listed | 104 g with battery |
| Battery | 21700 | Built-in |
| Max output | — | 3,000 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $74.95 at nitecorestore.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | nitecorestore.com sourced Listed L-5.37" x W-1.24" x H-0.84", 3.67 oz; converted |
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M21B vs EDC25: how they differ
Size and weight
The Nitecore EDC25 is the shorter light: 136.4 mm (5.37 in) against 141.5 mm (5.57 in), a difference of 5.1 mm (4%). At its widest point the Nitecore EDC25 is 4.2 mm slimmer (31.5 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC25: 104 g with battery), so they are not directly comparable.
Brightness and throw
The Nitecore EDC25 is rated at 3,000 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 EDC25 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 EDC25 $74.95 at nitecorestore.com, so the Convoy M21B cost $25.96 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 EDC25 if you want a shorter light (5.1 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 EDC25
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M21B vs EDC25 FAQ
Which is smaller, the Convoy M21B or the Nitecore EDC25?
The Nitecore EDC25 is the shorter light: 136.4 mm (5.37 in) against 141.5 mm (5.57 in), a difference of 5.1 mm (4%). At its widest point the Nitecore EDC25 is 4.2 mm slimmer (31.5 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC25: 104 g with battery), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Nitecore EDC25?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore EDC25 $74.95 at nitecorestore.com, so the Convoy M21B cost $25.96 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Nitecore EDC25 use the same battery?
The Convoy M21B runs on a removable 21700 battery; the Nitecore EDC25 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 EDC25 with similar lights
More
Sources
- Convoy M21B: specs from manufacturer published specs as listed by flashlightgo.com. Price $48.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Nitecore EDC25: specs from manufacturer published specs as listed by nitecorestore.com. Price $74.95 from nitecorestore.com, checked Nov 4, 2026; prices change often.
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