L1-LIG-01
Petzl
Petzl Actik Core
A 600-lumen headlamp with a red mode and a rechargeable core that swaps for AAAs when the battery dies in the cold.
L1-LIG-01 requires a hands-free light with a red mode and a field-replaceable power source. Red preserves night vision during navigation exercises; the dual-fuel design matters because lithium cells lose capacity sharply below −10 °C and a student needs a path back to working light that does not involve a charger.