Klarus G15 vs ThruNite TC15 V3 size comparison
The ThruNite TC15 V3 is 1 mm (0.04 in) longer than the Klarus G15, with about the same max diameter/width. Weights are published on different bases (listed vs listed), so compare them with care.
The ThruNite TC15 V3 is 1 mm (0.04 in) longer than the Klarus G15, with about the same max diameter/width. Weights are published on different bases (listed vs listed), so compare them with care.
Dimensions
| Klarus G15 Check price ↗ | ThruNite TC15 V3 Check price ↗ | |
| Length | 121 mm (4.76 in) | 122 mm (4.80 in)+1 mm |
| Head / width | 27 mm (1.06 in) | 27 mm (1.06 in)same |
| Body | 25 mm (0.98 in) | 23 mm (0.91 in)−2 mm |
| Weight | 70 g listed | 74 g listed |
| Battery | 21700 | 18650 |
| Max output | 4,200 lm | 2,403 lm |
| Throw | 200 m | 223 m |
| Type | EDC | EDC |
| Price | $79.95 at batteryjunction.com, as of Nov 4, 2026 | $59.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced Retailer lists W 27 x H 23 mm |
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G15 vs TC15 V3: how they differ
Size and weight
The Klarus G15 is the shorter light: 121 mm (4.76 in) against 122 mm (4.80 in), a difference of 1 mm (1%). At their widest points they are about the same (27 vs 27 mm). Weights are published on different bases (Klarus G15: 70 g listed; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Brightness and throw
The Klarus G15 is rated brighter: 4,200 lm maximum vs 2,403 lm for the ThruNite TC15 V3, 75% more. For beam distance the ThruNite TC15 V3 reaches further: 223 m vs 200 m rated throw (12% more).
Battery
The Klarus G15 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 Klarus G15 was $79.95 at batteryjunction.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the ThruNite TC15 V3 cost $19.96 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 Klarus G15 if you want more output (4,200 lm vs 2,403 lm). Choose the ThruNite TC15 V3 if you want longer throw (223 m vs 200 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Klarus G15 Check price ↗ ThruNite TC15 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
G15 vs TC15 V3 FAQ
Which is smaller, the Klarus G15 or the ThruNite TC15 V3?
The Klarus G15 is the shorter light: 121 mm (4.76 in) against 122 mm (4.80 in), a difference of 1 mm (1%). At their widest points they are about the same (27 vs 27 mm). Weights are published on different bases (Klarus G15: 70 g listed; ThruNite TC15 V3: 74 g listed), so they are not directly comparable.
Which is brighter, the Klarus G15 or the ThruNite TC15 V3?
The Klarus G15 is rated brighter: 4,200 lm maximum vs 2,403 lm for the ThruNite TC15 V3, 75% more. For beam distance the ThruNite TC15 V3 reaches further: 223 m vs 200 m rated throw (12% more).
Which is cheaper, the Klarus G15 or the ThruNite TC15 V3?
When we checked on Nov 4, 2026, the Klarus G15 was $79.95 at batteryjunction.com and the ThruNite TC15 V3 $59.99 at batteryjunction.com, so the ThruNite TC15 V3 cost $19.96 less. Prices change often, so check the current price before you buy.
Do the Klarus G15 and ThruNite TC15 V3 use the same battery?
The Klarus G15 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 Klarus G15 with similar lights
Compare ThruNite TC15 V3 with similar lights
More
Sources
- Klarus G15: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- ThruNite TC15 V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $59.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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