Unlike glow-in-the-dark stars that need direct sunlight or black lights to charge, the UVPaqlite charges quickly by absorbing the light from any light source: sunlight, flourescent, halogen, LEDS, etc. Once charged these lights will provide enough light to function in a shelter, tent, or bedroom without using electricity or fuel all night long. As long as the sun rises tomorrow, you can reuse it over-and-over again...FOREVER!!! The UVPaqlites are designed to give the user a form of light that has utility beyond typical glow-in-the-dark novelty products. The Paqlites are reusable, portable, waterproof, and require no maintenance. Glow sticks are considered the only kind of light source that is ideal safe for use immediately following an earthquake, hurricane, tornado, or other catastrophic emergency situation due to the fact that they do not use any kind of electricity to work and do not create any danger of sparking.