Works great. buy it - Streamlight E-Flood Upgrade Kit for Lite Box/Fire-Box Lanterns

First off, this is a FLOOD light. If you need a search light or more correctly a lite that casts a beam further then but the OTHER upgrade offered.

While this is a flood light it still cast a beam pretty far. In practical terms this is probably the most useful option for 90 percent of the usage this light will see. We use it as an emergency light when it sits in its cradle in the garage and also for camping when we take it along and charge it in the truck.

The upgrade was easy and we set the jumper pin for LONGER life VS Brighter Light. Again in real usage the difference is negligible and its best to have longer life in 90 percent of usage. After the upgrade i set it out and let it run till burnout and it lasted approx 12 HOURS! Thats what an LED upgrade does for this light!

if you have lower than average mechanical ability, don't try this without some help. its easy peasy for anyone with basic mechanical skills.