Emisar D4K vs ThruNite TC15 V3 size comparison
The ThruNite TC15 V3 is 19 mm (0.75 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The ThruNite TC15 V3 is 19 mm (0.75 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Emisar D4K Check price ↗ | ThruNite TC15 V3 Check price ↗ | |
| Length | 103 mm (4.06 in) | 122 mm (4.80 in)+19 mm |
| Head / width | 28 mm (1.10 in) | 27 mm (1.06 in)−1 mm |
| Body | 26.5 mm (1.04 in) | 23 mm (0.91 in)−3.5 mm |
| Weight | 58 g without battery | 74 g listed |
| Battery | 21700 | 18650 |
| Max output | — | 2,403 lm |
| Throw | — | 223 m |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | $59.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | batteryjunction.com sourced Retailer lists W 27 x H 23 mm |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs TC15 V3: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 122 mm (4.80 in), a difference of 19 mm (16%). At its widest point the ThruNite TC15 V3 is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Brightness and throw
The ThruNite TC15 V3 is rated at 2,403 lm; we have no published maximum for the Emisar D4K. Output for the Emisar D4K depends on the LED option chosen.
Battery
The Emisar D4K runs on a removable 21700 battery; the ThruNite TC15 V3 runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the Emisar D4K cost $20.30 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 D4K if you want a shorter light (19 mm shorter). On the specs we track, the Emisar D4K is ahead or level everywhere; the ThruNite TC15 V3 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 ↗ Emisar D4K Check price ↗ ThruNite TC15 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs TC15 V3 FAQ
Which is smaller, the Emisar D4K or the ThruNite TC15 V3?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 122 mm (4.80 in), a difference of 19 mm (16%). At its widest point the ThruNite TC15 V3 is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Which is cheaper, the Emisar D4K or the ThruNite TC15 V3?
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the Emisar D4K cost $20.30 less. Prices change often, so check the current price before you buy.
Do the Emisar D4K and ThruNite TC15 V3 use the same battery?
The Emisar D4K runs on a removable 21700 battery; the ThruNite TC15 V3 runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Emisar D4K with similar lights
Compare ThruNite TC15 V3 with similar lights
More
Sources
- Emisar D4K: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- ThruNite TC15 V3: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $59.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
Found an error? Email [email protected] and we will fix it.