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2. Headlamp (outdoor) - Wikipedia

   en.wikipedia.org/wiki/Headlamp_(outdoor)

   Variable light level, and flashing; Motion sensor to allow switching on and off by waving a hand with no need to operate a switch; Optional red light mode to preserve night vision; Both rechargeable and disposable batteries supported, to be able to provide light after the rechargeable battery is discharged

3. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Mechanically_powered...

   However it may be less reliable as an emergency light, because the rechargeable battery it contains eventually wears out. The lithium-ion cells used are typically rated for around 500 charges. In an alternative "Clockwork Torch" design, produced by Freeplay Energy , the energy is mechanically stored in a flat spiral wound mainspring , rather ...

4. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   The invention of the dry cell and miniature incandescent electric lamps made the first battery-powered flashlights possible around 1899. Today, flashlights use mostly light-emitting diodes and run on disposable or rechargeable batteries. Some are powered by the user turning a crank, shaking the lamp, or squeezing it

5. Solar street light - Wikipedia

   en.wikipedia.org/wiki/Solar_street_light

   The life cycle of the battery is very important to the lifetime of the light and the capacity of the battery will affect the backup days of the lights. There are two types of batteries commonly used in solar-powered street lights- gel cell deep cycle batteries as well as lead acid batteries.

6. Light tower (equipment) - Wikipedia

   en.wikipedia.org/wiki/Light_tower_(equipment)

   Normally the lamps are metal halide bulbs and the generator is powered by a diesel engine. However, battery-powered, solar-powered and hydrogen-powered sets are available; light towers with electrodeless lamps lighting are also sold. Modular kits permit separation of the generator set, trailer, lights and mast from each other.

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