[PodeCoet] sent in this mod he did to a Spider terminate flashlight. These things are incredibly bright, they utilize Cree LEDs that are so intense, they can ignite paper. [PodeCoet] notes that they run on relatively costly batteries. instead of purchasing some rechargeable ones, he chose to personalize as well as hack his torch. He added a custom-made charging circuit as well as a Lilon battery in addition to a boost-converter circuit as well as a condition LED.  We like the concept of having a rechargeable lamp, however he has lost his water proofing. If anything, you must go there to see his well done smd charger pcb in addition to the photos of his test run, burning some paper.

As some people have explained in the comments, this flashlight might not have started that fire. this might though.