Convoy M21H vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 5.8 mm (0.23 in) shorter than the Convoy M21H, and 5 mm narrower at its widest point.
The ThruNite TC20 V3 is 5.8 mm (0.23 in) shorter than the Convoy M21H, and 5 mm narrower at its widest point.
Dimensions
| Convoy M21H Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 130.8 mm (5.15 in) | 125 mm (4.92 in)−5.8 mm |
| Head / width | 40 mm (1.57 in) | 35 mm (1.38 in)−5 mm |
| Body | 27 mm (1.06 in) | 28 mm (1.10 in)+1 mm |
| Tail | 28.5 mm (1.12 in) | — |
| Weight | — | 197 g with battery |
| Battery | 21700 | 21700 |
| Max output | — | 4,720 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | from $44.95 at nealsgadgets.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | nealsgadgets.com sourced | batteryjunction.com sourced |
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M21H vs TC20 V3: how they differ
Size and weight
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 130.8 mm (5.15 in), a difference of 5.8 mm (4%). At its widest point the ThruNite TC20 V3 is 5 mm slimmer (35 vs 40 mm).
Brightness and throw
The ThruNite TC20 V3 is rated at 4,720 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 ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Convoy M21H cost $35.00 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 ThruNite TC20 V3 if you want a shorter light (5.8 mm shorter) and a slimmer profile (5 mm narrower). On the specs we track, the ThruNite TC20 V3 is ahead or level everywhere; the Convoy M21H 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 ↗ ThruNite TC20 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21H vs TC20 V3 FAQ
Which is smaller, the Convoy M21H or the ThruNite TC20 V3?
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 130.8 mm (5.15 in), a difference of 5.8 mm (4%). At its widest point the ThruNite TC20 V3 is 5 mm slimmer (35 vs 40 mm).
Which is cheaper, the Convoy M21H or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the Convoy M21H was from $44.95 at nealsgadgets.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Convoy M21H cost $35.00 less. Prices change often, so check the current price before you buy.
Do the Convoy M21H and ThruNite TC20 V3 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 ThruNite TC20 V3 with similar lights
More
Sources
- Convoy M21H: specs from manufacturer published specs as listed by nealsgadgets.com. Price from $44.95 from nealsgadgets.com, checked Nov 4, 2026; prices change often.
- ThruNite TC20 V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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