On my expensive lights like the Ion, FireFly, ARC4, LHS etc I usually put my name and phone number on a sticky with a "Reward if Found" and wrap it around the battery.
If it gets lost maybe the person who finds it will give me a call when they need to change the battery. This gives me some hope of getting it back as well as curing any battery rattles.
If it gets lost maybe the person who finds it will give me a call when they need to change the battery. This gives me some hope of getting it back as well as curing any battery rattles.