A few precautions are still necessary
This is not a game: the carbon from the batteries may contain components that must be handled with care. Wear gloves, work in a well-ventilated area, and above all, do not inhale the powder. And most importantly, never use modern lithium or alkaline batteries, which are unsuitable and can be dangerous.
Giving your headlights a new lease on life is ultimately as simple as finding an old sweater you thought was ready for recycling… and giving it a second life!