Originally Posted by
NH Shooter
FYI, storing the light or spare battery on a charger is NOT desirable from a cell longevity standpoint (Li-ion cells are best stored partially depleted). Twenty years ago systems like the Stinger made sense for a light that must be ready for action 24/7 but with the high capacity cells now available, the entire keep-the-flashlight-on-a-charger gig is antiquated and only serves to shorten cell life. Add on top of that the proprietary cells and charger, there's no longer much (if any) advantage to these systems.
IMO, lights that take common 16 mm or 18 mm Li-ion cells and CR123 batteries offer greater power source flexibility and are available in a MUCH larger range of sizes, output, etc. IMO, your $$ is better spent on a couple of Polytac lights, a few 16650 Li-ion cells and a charger, and a box of CR123 batteries for back up.