New Streamlight Stinger user

[GeoScouter]

Saturday I was checking out some yard sales and came across a Stinger with the AC and DC chargers. The light was new and never used in the original box. Of course I took it off their hands. Its a nice little light. Its my first quality incandescent light.

I was searching the forums and looking for mods or better battery packs. I saw references to upgrades but not sure whats still available. What is the best battery and bulb upgrade for this light? I like to get longer runtime with the light.

Steve