How is lighting performance measured with the ANSI/PLATO FL1 protocol?
How does my lamp perform with 3 AAA/LR03 batteries?
HYBRID concept: the choice of standard batteries or CORE rechargeable battery for your headlamp
Is the CORE rechargeable battery compatible with my Petzl headlamp?
Brightness or burn time, a question of balance
Which energy source for which use?
Non-rechargeable energy sources
Rechargeable energy sources
Development and testing
Information on LED lighting