Like Thermal Guy says, LF makes a battery adapter as well as LED bulb retrofits. Batteryspace sells an original replacement NiCD style pack if you want to keep using the existing charger, but some people say they don't fit right.
One thing to keep in mind is the 9N is functionally obsolete and unsupported by Surefire. I'd give the light as-is as a keepsake but spend the money on a modern flashlight that's not 30 year old technology.
Ill think about it but if i decide to give it away your it!!I'd take it for my collection, but why not pass it along as a memento to the kid?
You'd have to modify the battery. The contacts on either end don't make contact with the 9N's parts. I just tried it.A battery stick from Stream light, the ones used for the Stinger line of lights, will power a 9N.