Here is how these two headlamps compare on the numbers. The MH5 leans on low weight while the NU31 answers with brightness, so the pick comes down to which you value.
| Ledlenser MH5 | Nitecore NU31 | |
|---|---|---|
| GearScore | 75✓ | 73 |
| Max lumens | 400 lm | 550 lm✓ |
| Weight | 3.3 oz✓ | 3.4 oz |
| Beam distance | 180 m✓ | 145 m |
| Max runtime | 35 h | 147 h |
| Price | n/s | $40 |
| Battery | Hybrid | Rechargeable |
| Water rating | IP54 | IP66 |
Highlighted cells mark the better spec: MH5 in blue, NU31 in amber. A blank spec is never counted as a win. Runtime is shown for context and is not scored, since makers publish it at different brightness levels. GearScore is the overall rating (0 to 100); re-weight it on the full headlamp comparison. Prices are current MSRP.
The Ledlenser MH5 against the Nitecore NU31 is a study in priorities. The MH5 wins on low weight and longer throw, and the NU31 pushes back on brightness.
The MH5 is a little lighter and a longer beam (180 vs 145 m). The NU31 is brighter (550 vs 400 lm). On the default GearScore the MH5 leads 75 to 73.
Pick the MH5 if you care most about low weight and longer throw, which makes it the better call for counting grams on long miles. Pick the NU31 if brightness matter more to you, or you are focused on your priorities.
The Ledlenser MH5. It is a little lighter than the NU31.
The Nitecore NU31. It is brighter (550 vs 400 lm) than the MH5.
The Ledlenser MH5, 75 to 73 on the default algorithm. You can re-weight the factors to match your trip.
It depends on your priorities. Go with the MH5 for low weight, or the NU31 for brightness. The spec table above shows exactly where each wins.