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hey bro's i have an old convoy s2+ that was sitting around in a drawer that i'm trying to revive.
it originally was lighting up, but very dim barely perceptible. i found an ancient post on a flashlight forum that said put an extra oring behind the lens as a spacer between it and the pill and it worked.
now it shines full brightness when i put a fresh 18650 in it but it starts ramping down instantly.
my batteries are pretty old and they're vape batteries not flashlight spec ones. do i just have a case of shitty battery or could there potentially be a different cause?
what are the best 18650s for flashlights these days?
