Convoy S21E vs Nitecore EDC17 size comparison
The Nitecore EDC17 is 6.6 mm (0.26 in) longer than the Convoy S21E, and 4.7 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The Nitecore EDC17 is 6.6 mm (0.26 in) longer than the Convoy S21E, and 4.7 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Convoy S21E Check price ↗ | Nitecore EDC17 Check price ↗ | |
| Length | 116.4 mm (4.58 in) | 123 mm (4.84 in)+6.6 mm |
| Head / width | 27.3 mm (1.07 in) | 32 mm (1.26 in)+4.7 mm |
| Body | 27.3 mm (1.07 in) | — |
| Thickness | — | 16 mm (0.63 in) |
| Weight | 88 g without battery | 106 g listed |
| Battery | 21700 | Built-in |
| Max output | — | 1,500 lm |
| Throw | — | 230 m |
| Type | EDC | EDC |
| Price | from $27.99 at flashlightgo.com, as of Nov 4, 2026 | $94.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | batteryjunction.com sourced |
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S21E vs EDC17: how they differ
Size and weight
The Convoy S21E is the shorter light: 116.4 mm (4.58 in) against 123 mm (4.84 in), a difference of 6.6 mm (5%). At its widest point the Convoy S21E is 4.7 mm slimmer (27.3 vs 32 mm). Weights are published on different bases (Convoy S21E: 88 g without battery; Nitecore EDC17: 106 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore EDC17 is rated at 1,500 lm; we have no published maximum for the Convoy S21E. Output for the Convoy S21E depends on the LED option chosen.
Battery
The Convoy S21E runs on a removable 21700 battery; the Nitecore EDC17 runs on a built-in rechargeable battery. Only the Convoy S21E lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Convoy S21E was from $27.99 at flashlightgo.com and the Nitecore EDC17 $94.95 at batteryjunction.com, so the Convoy S21E cost $66.96 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 S21E if you want a shorter light (6.6 mm shorter), a slimmer profile (4.7 mm narrower) and a removable cell you can swap. Choose the Nitecore EDC17 if you want 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 S21E Check price ↗ Nitecore EDC17
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S21E vs EDC17 FAQ
Which is smaller, the Convoy S21E or the Nitecore EDC17?
The Convoy S21E is the shorter light: 116.4 mm (4.58 in) against 123 mm (4.84 in), a difference of 6.6 mm (5%). At its widest point the Convoy S21E is 4.7 mm slimmer (27.3 vs 32 mm). Weights are published on different bases (Convoy S21E: 88 g without battery; Nitecore EDC17: 106 g listed), so they are not directly comparable.
Which is cheaper, the Convoy S21E or the Nitecore EDC17?
When we checked on Nov 4, 2026, the Convoy S21E was from $27.99 at flashlightgo.com and the Nitecore EDC17 $94.95 at batteryjunction.com, so the Convoy S21E cost $66.96 less. Prices change often, so check the current price before you buy.
Do the Convoy S21E and Nitecore EDC17 use the same battery?
The Convoy S21E runs on a removable 21700 battery; the Nitecore EDC17 runs on a built-in rechargeable battery. Only the Convoy S21E lets you swap in a charged spare.
Compare Convoy S21E with similar lights
Compare Nitecore EDC17 with similar lights
More
Sources
- Convoy S21E: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: outline from published specs. Price from $27.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Nitecore EDC17: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $94.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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