Re: Personal strobes - new or old?
"and $65.00 to shrink wrap them!"
Ah, but it is MILSPEC shrink wrap, installed by a professionally certified installer. (G)
One thing I have found with batteries (alkaline, not lithium) in sealed dive lights, is that the batteries outgas as they age, and the gas causes a black non-conductive tarnish of some kind on brass, copper, and stainless parts. Rendering the light useless. While lithium cells shouldn't do that, I'd still apply silicon grease to all contacts, to ensure that simply can't happen.