Emisar D3AA vs Nitecore T4K size comparison
The Nitecore T4K is 3 mm (0.12 in) longer than the Emisar D3AA, and 6 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Nitecore T4K: Photo: Nitecore · Image policy
The Nitecore T4K is 3 mm (0.12 in) longer than the Emisar D3AA, and 6 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Emisar D3AA Check price ↗ | Nitecore T4K Check price ↗ | |
| Length | 79 mm (3.11 in) | 82 mm (3.23 in)+3 mm |
| Head / width | 24 mm (0.94 in) | 30 mm (1.18 in)+6 mm |
| Body | 19 mm (0.75 in) | — |
| Thickness | — | 29 mm (1.14 in) |
| Weight | 36 g without battery | 77 g listed |
| Battery | 14500 / AA | Built-in |
| Max output | — | 4,000 lm |
| Throw | — | 209 m |
| Type | EDC | EDC |
| Price | $35.81 at intl-outdoor.com, as of Nov 4, 2026 | $89.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | batteryjunction.com sourced |
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D3AA vs T4K: how they differ
Size and weight
The Emisar D3AA is the shorter light: 79 mm (3.11 in) against 82 mm (3.23 in), a difference of 3 mm (4%). At its widest point the Emisar D3AA is 6 mm slimmer (24 vs 30 mm). Weights are published on different bases (Emisar D3AA: 36 g without battery; Nitecore T4K: 77 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore T4K is rated at 4,000 lm; we have no published maximum for the Emisar D3AA. Output for the Emisar D3AA depends on the LED option chosen.
Battery
The Emisar D3AA runs on removable 14500 / AA batteries; the Nitecore T4K runs on a built-in rechargeable battery. Only the Emisar D3AA lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Nitecore T4K $89.95 at batteryjunction.com, so the Emisar D3AA cost $54.14 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 Emisar D3AA if you want a shorter light (3 mm shorter), a slimmer profile (6 mm narrower) and a removable cell you can swap. Choose the Nitecore T4K 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 ↗ Emisar D3AA Check price ↗ Nitecore T4K
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D3AA vs T4K FAQ
Which is smaller, the Emisar D3AA or the Nitecore T4K?
The Emisar D3AA is the shorter light: 79 mm (3.11 in) against 82 mm (3.23 in), a difference of 3 mm (4%). At its widest point the Emisar D3AA is 6 mm slimmer (24 vs 30 mm). Weights are published on different bases (Emisar D3AA: 36 g without battery; Nitecore T4K: 77 g listed), so they are not directly comparable.
Which is cheaper, the Emisar D3AA or the Nitecore T4K?
When we checked on Nov 4, 2026, the Emisar D3AA was $35.81 at intl-outdoor.com and the Nitecore T4K $89.95 at batteryjunction.com, so the Emisar D3AA cost $54.14 less. Prices change often, so check the current price before you buy.
Do the Emisar D3AA and Nitecore T4K use the same battery?
The Emisar D3AA runs on removable 14500 / AA batteries; the Nitecore T4K runs on a built-in rechargeable battery. Only the Emisar D3AA lets you swap in a charged spare.
Compare Emisar D3AA with similar lights
Compare Nitecore T4K with similar lights
More
Sources
- Emisar D3AA: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $35.81 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Nitecore T4K: specs from manufacturer published specs as listed by batteryjunction.com. Photo from manufacturer: the maker's own product photo with the background removed, scaled to the published length and diameter (Photo: Nitecore; image policy). Price $89.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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