Fenix TK15R vs ThruNite BSS V6 size comparison
The ThruNite BSS V6 is 3 mm (0.12 in) shorter than the Fenix TK15R, and 9 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
ThruNite BSS V6: Photo: ThruNite · Image policy
The ThruNite BSS V6 is 3 mm (0.12 in) shorter than the Fenix TK15R, and 9 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix TK15R Check price ↗ | ThruNite BSS V6 Check price ↗ | |
| Length | 149 mm (5.87 in) | 146 mm (5.75 in)−3 mm |
| Head / width | 34 mm (1.34 in) | 25 mm (0.98 in)−9 mm |
| Body | 25.4 mm (1.00 in) | 24 mm (0.94 in)−1.4 mm |
| Weight | 205.5 g with battery | 97 g listed |
| Battery | 21700 | 18650 |
| Max output | 3,200 lm | 2,000 lm |
| Throw | 490 m | 259 m |
| Type | Tactical | Tactical |
| Price | $119.95 at fenixlighting.com, as of Nov 4, 2026 | $49.99 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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TK15R vs BSS V6: how they differ
Size and weight
The ThruNite BSS V6 is the shorter light: 146 mm (5.75 in) against 149 mm (5.87 in), a difference of 3 mm (2%). At its widest point the ThruNite BSS V6 is 9 mm slimmer (25 vs 34 mm). Weights are published on different bases (Fenix TK15R: 205.5 g with battery; ThruNite BSS V6: 97 g listed), so they are not directly comparable.
Brightness and throw
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 2,000 lm for the ThruNite BSS V6, 60% more. For beam distance the Fenix TK15R reaches further: 490 m vs 259 m rated throw (89% more).
Battery
The Fenix TK15R runs on a removable 21700 battery; the ThruNite BSS V6 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 Fenix TK15R was $119.95 at fenixlighting.com and the ThruNite BSS V6 $49.99 at batteryjunction.com, so the ThruNite BSS V6 cost $69.96 less. Prices change often, so check the current price before you buy.
Type
Both are tactical lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix TK15R if you want more output (3,200 lm vs 2,000 lm) and longer throw (490 m vs 259 m). Choose the ThruNite BSS V6 if you want a shorter light (3 mm shorter) and a slimmer profile (9 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix TK15R Check price ↗ ThruNite BSS V6
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
TK15R vs BSS V6 FAQ
Which is smaller, the Fenix TK15R or the ThruNite BSS V6?
The ThruNite BSS V6 is the shorter light: 146 mm (5.75 in) against 149 mm (5.87 in), a difference of 3 mm (2%). At its widest point the ThruNite BSS V6 is 9 mm slimmer (25 vs 34 mm). Weights are published on different bases (Fenix TK15R: 205.5 g with battery; ThruNite BSS V6: 97 g listed), so they are not directly comparable.
Which is brighter, the Fenix TK15R or the ThruNite BSS V6?
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 2,000 lm for the ThruNite BSS V6, 60% more. For beam distance the Fenix TK15R reaches further: 490 m vs 259 m rated throw (89% more).
Which is cheaper, the Fenix TK15R or the ThruNite BSS V6?
When we checked on Nov 4, 2026, the Fenix TK15R was $119.95 at fenixlighting.com and the ThruNite BSS V6 $49.99 at batteryjunction.com, so the ThruNite BSS V6 cost $69.96 less. Prices change often, so check the current price before you buy.
Do the Fenix TK15R and ThruNite BSS V6 use the same battery?
The Fenix TK15R runs on a removable 21700 battery; the ThruNite BSS V6 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 Fenix TK15R with similar lights
Compare ThruNite BSS V6 with similar lights
More
Sources
- Fenix TK15R: specs from Fenix product page (manufacturer). Drawing: shape measured from manufacturer photo (fenixlighting.com), scaled to the published length and diameter. Price $119.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite BSS V6: 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: ThruNite; image policy). Price $49.99 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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