Fenix HL16 AAA vs Fenix HM55R size comparison
The Fenix HM55R is about the same length as the Fenix HL16 AAA, and 4 mm narrower at its widest point. It is 8 g heavier (with battery).
The Fenix HM55R is about the same length as the Fenix HL16 AAA, and 4 mm narrower at its widest point. It is 8 g heavier (with battery).
Dimensions
| Fenix HL16 AAA Check price ↗ | Fenix HM55R Check price ↗ | |
| Length | 64 mm (2.52 in) | 64 mm (2.52 in)same |
| Height | 48 mm (1.89 in) | 44 mm (1.73 in)−4 mm |
| Thickness | 27 mm (1.06 in) | 34 mm (1.34 in)+7 mm |
| Weight | 97.2 g with battery and headband | 105 g with battery and headband+8 g |
| Battery | 3x AAA | 18650 |
| Max output | 450 lm | 1,200 lm |
| Throw | 104 m | 175 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $29.95 at fenixlighting.com, as of Nov 4, 2026 | $74.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Headlamp unit; front view drawn width x height | fenixlighting.com sourced Headlamp unit; front view drawn width x height |
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HL16 AAA vs HM55R: how they differ
Size and weight
The Fenix HL16 AAA and Fenix HM55R are the same length to within half a millimetre (64 mm (2.52 in)). At its widest point the Fenix HM55R is 4 mm slimmer (44 vs 48 mm). The Fenix HL16 AAA is 8 g lighter (97.2 g vs 105 g, with battery and headband).
Brightness and throw
The Fenix HM55R is rated brighter: 1,200 lm maximum vs 450 lm for the Fenix HL16 AAA, 167% more. For beam distance the Fenix HM55R reaches further: 175 m vs 104 m rated throw (68% more).
Battery
The Fenix HL16 AAA runs on removable 3x AAA batteries; the Fenix HM55R runs on a removable 18650 battery. For scale, a AAA cell is about 10.5 × 44.5 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix HL16 AAA was $29.95 at fenixlighting.com and the Fenix HM55R $74.95 at fenixlighting.com, so the Fenix HL16 AAA cost $45.00 less. Prices change often, so check the current price before you buy.
Type
Both are headlamps / right-angle lights in our catalog with a headlamp body.
Which should you buy?
Choose the Fenix HL16 AAA if you want less weight (8 g lighter). Choose the Fenix HM55R if you want a slimmer profile (4 mm narrower), more output (1,200 lm vs 450 lm) and longer throw (175 m vs 104 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HL16 AAA Check price ↗ Fenix HM55R
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HL16 AAA vs HM55R FAQ
Which is smaller, the Fenix HL16 AAA or the Fenix HM55R?
The Fenix HL16 AAA and Fenix HM55R are the same length to within half a millimetre (64 mm (2.52 in)). At its widest point the Fenix HM55R is 4 mm slimmer (44 vs 48 mm). The Fenix HL16 AAA is 8 g lighter (97.2 g vs 105 g, with battery and headband).
Which is brighter, the Fenix HL16 AAA or the Fenix HM55R?
The Fenix HM55R is rated brighter: 1,200 lm maximum vs 450 lm for the Fenix HL16 AAA, 167% more. For beam distance the Fenix HM55R reaches further: 175 m vs 104 m rated throw (68% more).
Which is cheaper, the Fenix HL16 AAA or the Fenix HM55R?
When we checked on Nov 4, 2026, the Fenix HL16 AAA was $29.95 at fenixlighting.com and the Fenix HM55R $74.95 at fenixlighting.com, so the Fenix HL16 AAA cost $45.00 less. Prices change often, so check the current price before you buy.
Do the Fenix HL16 AAA and Fenix HM55R use the same battery?
The Fenix HL16 AAA runs on removable 3x AAA batteries; the Fenix HM55R runs on a removable 18650 battery. For scale, a AAA cell is about 10.5 × 44.5 mm and a 18650 about 18 × 65 mm (nominal).
Compare Fenix HL16 AAA with similar lights
Compare Fenix HM55R with similar lights
More
Sources
- Fenix HL16 AAA: specs from Fenix product page (manufacturer). Price $29.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix HM55R: specs from Fenix product page (manufacturer). Price $74.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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