Olight ArkTac Ultra vs ThruNite TN12 V6 size comparison
The ThruNite TN12 V6 is 1.6 mm (0.06 in) shorter than the Olight ArkTac Ultra, and 2 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs with battery), so compare them with care.
The ThruNite TN12 V6 is 1.6 mm (0.06 in) shorter than the Olight ArkTac Ultra, and 2 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs with battery), so compare them with care.
Dimensions
| Olight ArkTac Ultra Check price ↗ | ThruNite TN12 V6 Check price ↗ | |
| Length | 135.6 mm (5.34 in) | 134 mm (5.28 in)−1.6 mm |
| Head / width | 29 mm (1.14 in) | 27 mm (1.06 in)−2 mm |
| Body | — | 24 mm (0.94 in) |
| Thickness | 17 mm (0.67 in) | — |
| Weight | 140 g with battery | 88 g listed (battery unspecified) |
| Battery | Built-in | 18650 |
| Max output | — | 1,950 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $159.99 at olight.com, as of Nov 4, 2026 | $39.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | olight.com unverified Dims from ArkTac series comparison table (row assumed to be Ultra); re-check on ArkTac Ultra page | batteryjunction.com sourced |
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ArkTac Ultra vs TN12 V6: how they differ
Size and weight
The ThruNite TN12 V6 is the shorter light: 134 mm (5.28 in) against 135.6 mm (5.34 in), a difference of 1.6 mm (1%). At its widest point the ThruNite TN12 V6 is 2 mm slimmer (27 vs 29 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; ThruNite TN12 V6: 88 g listed (battery unspecified)), so they are not directly comparable.
Brightness and throw
The ThruNite TN12 V6 is rated at 1,950 lm; we have no published maximum for the Olight ArkTac Ultra.
Battery
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the ThruNite TN12 V6 runs on a removable 18650 battery. Only the ThruNite TN12 V6 lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Olight ArkTac Ultra was $159.99 at olight.com and the ThruNite TN12 V6 $39.99 at batteryjunction.com, so the ThruNite TN12 V6 cost $120.00 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 Olight ArkTac Ultra if you want a built-in battery with no separate cell to buy. Choose the ThruNite TN12 V6 if you want a slimmer profile (2 mm narrower) and a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight ArkTac Ultra Check price ↗ ThruNite TN12 V6
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ArkTac Ultra vs TN12 V6 FAQ
Which is smaller, the Olight ArkTac Ultra or the ThruNite TN12 V6?
The ThruNite TN12 V6 is the shorter light: 134 mm (5.28 in) against 135.6 mm (5.34 in), a difference of 1.6 mm (1%). At its widest point the ThruNite TN12 V6 is 2 mm slimmer (27 vs 29 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; ThruNite TN12 V6: 88 g listed (battery unspecified)), so they are not directly comparable.
Which is cheaper, the Olight ArkTac Ultra or the ThruNite TN12 V6?
When we checked on Nov 4, 2026, the Olight ArkTac Ultra was $159.99 at olight.com and the ThruNite TN12 V6 $39.99 at batteryjunction.com, so the ThruNite TN12 V6 cost $120.00 less. Prices change often, so check the current price before you buy.
Do the Olight ArkTac Ultra and ThruNite TN12 V6 use the same battery?
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the ThruNite TN12 V6 runs on a removable 18650 battery. Only the ThruNite TN12 V6 lets you swap in a charged spare.
Compare Olight ArkTac Ultra with similar lights
Compare ThruNite TN12 V6 with similar lights
More
Sources
- Olight ArkTac Ultra: specs from Olight product page (manufacturer). Some values could not be confirmed on a second source and are marked unverified. Price $159.99 from olight.com, checked Nov 4, 2026; prices change often.
- ThruNite TN12 V6: specs from manufacturer published specs as listed by batteryjunction.com. Price $39.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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