Convoy S2+ vs Nitecore EDC31 size comparison
The Nitecore EDC31 is 5 mm (0.20 in) shorter than the Convoy S2+, and 1.1 mm narrower at its widest point. Weights are published on different bases (with clip vs without battery), so compare them with care.
The Nitecore EDC31 is 5 mm (0.20 in) shorter than the Convoy S2+, and 1.1 mm narrower at its widest point. Weights are published on different bases (with clip vs without battery), so compare them with care.
Dimensions
| Convoy S2+ Check price ↗ | Nitecore EDC31 Check price ↗ | |
| Length | 118 mm (4.65 in) | 113 mm (4.45 in)−5 mm |
| Head / width | 24.1 mm (0.95 in) | 23 mm (0.91 in)−1.1 mm |
| Body | 24.1 mm (0.95 in) | 23 mm (0.91 in)−1.1 mm |
| Weight | 76 g without battery | 100 g with clip |
| Battery | 18650 | Built-in |
| Max output | — | 3,500 lm |
| Throw | — | 380 m |
| Type | EDC | EDC |
| Price | from $11.46 at convoylight.com, as of Nov 4, 2026 | $54.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | convoylight.com sourced Output depends on LED option | batteryjunction.com sourced Maker page: 4.46 in, head 0.91 in, tube 0.89 in, 3.53 oz with clip |
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S2+ vs EDC31: how they differ
Size and weight
The Nitecore EDC31 is the shorter light: 113 mm (4.45 in) against 118 mm (4.65 in), a difference of 5 mm (4%). At its widest point the Nitecore EDC31 is 1.1 mm slimmer (23 vs 24.1 mm). Weights are published on different bases (Convoy S2+: 76 g without battery; Nitecore EDC31: 100 g with clip), so they are not directly comparable.
Brightness and throw
The Nitecore EDC31 is rated at 3,500 lm; we have no published maximum for the Convoy S2+. Output for the Convoy S2+ depends on the LED option chosen.
Battery
The Convoy S2+ runs on a removable 18650 battery; the Nitecore EDC31 runs on a built-in rechargeable battery. Only the Convoy S2+ lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Convoy S2+ was from $11.46 at convoylight.com and the Nitecore EDC31 $54.95 at batteryjunction.com, so the Convoy S2+ cost $43.49 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 S2+ if you want a removable cell you can swap. Choose the Nitecore EDC31 if you want a shorter light (5 mm shorter) 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 S2+ Check price ↗ Nitecore EDC31
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S2+ vs EDC31 FAQ
Which is smaller, the Convoy S2+ or the Nitecore EDC31?
The Nitecore EDC31 is the shorter light: 113 mm (4.45 in) against 118 mm (4.65 in), a difference of 5 mm (4%). At its widest point the Nitecore EDC31 is 1.1 mm slimmer (23 vs 24.1 mm). Weights are published on different bases (Convoy S2+: 76 g without battery; Nitecore EDC31: 100 g with clip), so they are not directly comparable.
Which is cheaper, the Convoy S2+ or the Nitecore EDC31?
When we checked on Nov 4, 2026, the Convoy S2+ was from $11.46 at convoylight.com and the Nitecore EDC31 $54.95 at batteryjunction.com, so the Convoy S2+ cost $43.49 less. Prices change often, so check the current price before you buy.
Do the Convoy S2+ and Nitecore EDC31 use the same battery?
The Convoy S2+ runs on a removable 18650 battery; the Nitecore EDC31 runs on a built-in rechargeable battery. Only the Convoy S2+ lets you swap in a charged spare.
Compare Convoy S2+ with similar lights
Compare Nitecore EDC31 with similar lights
More
Sources
- Convoy S2+: specs from manufacturer published specs as listed by convoylight.com. Price from $11.46 from convoylight.com, checked Nov 4, 2026; prices change often.
- Nitecore EDC31: specs from manufacturer published specs as listed by batteryjunction.com. Price $54.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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