Night Navigation Calculator

Headlamp runtime and battery needs for night sections.

Night section (hrs)

Headlamp brightness (lumens)

Battery capacity (mAh)

Number of headlamps

Terrain Difficulty

Moving time (%)

Tab to move between fields

High-mode runtime (hrs)

Battery drain (%)100

Battery sets needed2

Spare batteries1

Battery weight (g)96

Speed penalty (%)40

Recommended lumens300

Lumen adequacy (%)100

Moving time (hrs)6.4

Off (hrs)0.8

How to Use This Calculator

Enter Night section (hrs), Headlamp brightness (lumens), and Battery capacity (mAh).
Set Number of headlamps, Terrain Difficulty, and Road / path.
Adjust Maintained trail, Off-trail hiking as needed.
Review the High-mode runtime (hrs) result.
Use Battery drain (%) and Battery sets needed to inform your decision.

Ad Placeholder