Emisar D1K vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 11 mm (0.43 in) longer than the Emisar D1K, with about the same max diameter/width. Weights are published on different bases (with battery vs without battery), so compare them with care.
The ThruNite TC20 V3 is 11 mm (0.43 in) longer than the Emisar D1K, with about the same max diameter/width. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Emisar D1K Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 114 mm (4.49 in) | 125 mm (4.92 in)+11 mm |
| Head / width | 35 mm (1.38 in) | 35 mm (1.38 in)same |
| Body | 26.5 mm (1.04 in) | 28 mm (1.10 in)+1.5 mm |
| Weight | 89 g without battery | 197 g with battery |
| Battery | 21700 | 21700 |
| Max output | 1,200 lm | 4,720 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $39.95 at intl-outdoor.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Pocket thrower; lumens for SFT-25 | batteryjunction.com sourced |
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D1K vs TC20 V3: how they differ
Size and weight
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 125 mm (4.92 in), a difference of 11 mm (9%). At their widest points they are about the same (35 vs 35 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; ThruNite TC20 V3: 197 g with battery), so they are not directly comparable.
Brightness and throw
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,200 lm for the Emisar D1K, 293% more.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Emisar D1K was $39.95 at intl-outdoor.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Emisar D1K cost $40.00 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 Emisar D1K if you want a shorter light (11 mm shorter). Choose the ThruNite TC20 V3 if you want more output (4,720 lm vs 1,200 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D1K Check price ↗ ThruNite TC20 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D1K vs TC20 V3 FAQ
Which is smaller, the Emisar D1K or the ThruNite TC20 V3?
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 125 mm (4.92 in), a difference of 11 mm (9%). At their widest points they are about the same (35 vs 35 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; ThruNite TC20 V3: 197 g with battery), so they are not directly comparable.
Which is brighter, the Emisar D1K or the ThruNite TC20 V3?
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 1,200 lm for the Emisar D1K, 293% more.
Which is cheaper, the Emisar D1K or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the Emisar D1K was $39.95 at intl-outdoor.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the Emisar D1K cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Emisar D1K and ThruNite TC20 V3 use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Emisar D1K with similar lights
Compare ThruNite TC20 V3 with similar lights
More
Sources
- Emisar D1K: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $39.95 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- ThruNite TC20 V3: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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