Acebeam Defender P16 vs Fenix TK15R size comparison
The Fenix TK15R is 18 mm (0.71 in) longer than the Acebeam Defender P16, and 2 mm wider at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Fenix TK15R is 18 mm (0.71 in) longer than the Acebeam Defender P16, and 2 mm wider at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| Acebeam Defender P16 Check price ↗ | Fenix TK15R Check price ↗ | |
| Length | 131 mm (5.16 in) | 149 mm (5.87 in)+18 mm |
| Head / width | 32 mm (1.26 in) | 34 mm (1.34 in)+2 mm |
| Body | 23 mm (0.91 in) | 25.4 mm (1.00 in)+2.4 mm |
| Weight | 156 g listed | 205.5 g with battery |
| Battery | 18650 | 21700 |
| Max output | 1,800 lm | 3,200 lm |
| Throw | 484 m | 490 m |
| Type | Tactical | Tactical |
| Price | $79.95 at batteryjunction.com, as of Nov 4, 2026 | $119.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | fenixlighting.com sourced |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Defender P16 vs TK15R: how they differ
Size and weight
The Acebeam Defender P16 is the shorter light: 131 mm (5.16 in) against 149 mm (5.87 in), a difference of 18 mm (12%). At its widest point the Acebeam Defender P16 is 2 mm slimmer (32 vs 34 mm). Weights are published on different bases (Acebeam Defender P16: 156 g listed; Fenix TK15R: 205.5 g with battery), so they are not directly comparable.
Brightness and throw
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 1,800 lm for the Acebeam Defender P16, 78% more. For beam distance the Fenix TK15R reaches further: 490 m vs 484 m rated throw (1% more).
Battery
The Acebeam Defender P16 runs on a removable 18650 battery; the Fenix TK15R runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Acebeam Defender P16 was $79.95 at batteryjunction.com and the Fenix TK15R $119.95 at fenixlighting.com, so the Acebeam Defender P16 cost $40.00 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 Acebeam Defender P16 if you want a shorter light (18 mm shorter) and a slimmer profile (2 mm narrower). Choose the Fenix TK15R if you want more output (3,200 lm vs 1,800 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Acebeam Defender P16 Check price ↗ Fenix TK15R
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Defender P16 vs TK15R FAQ
Which is smaller, the Acebeam Defender P16 or the Fenix TK15R?
The Acebeam Defender P16 is the shorter light: 131 mm (5.16 in) against 149 mm (5.87 in), a difference of 18 mm (12%). At its widest point the Acebeam Defender P16 is 2 mm slimmer (32 vs 34 mm). Weights are published on different bases (Acebeam Defender P16: 156 g listed; Fenix TK15R: 205.5 g with battery), so they are not directly comparable.
Which is brighter, the Acebeam Defender P16 or the Fenix TK15R?
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 1,800 lm for the Acebeam Defender P16, 78% more. For beam distance the Fenix TK15R reaches further: 490 m vs 484 m rated throw (1% more).
Which is cheaper, the Acebeam Defender P16 or the Fenix TK15R?
When we checked on Nov 4, 2026, the Acebeam Defender P16 was $79.95 at batteryjunction.com and the Fenix TK15R $119.95 at fenixlighting.com, so the Acebeam Defender P16 cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Acebeam Defender P16 and Fenix TK15R use the same battery?
The Acebeam Defender P16 runs on a removable 18650 battery; the Fenix TK15R runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Acebeam Defender P16 with similar lights
Compare Fenix TK15R with similar lights
More
Sources
- Acebeam Defender P16: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- 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.
Found an error? Email contact@flashlighthero.com and we will fix it.