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2. These Are the Best Handheld Spotlights for Your Emergency ...

   www.aol.com/8-best-handheld-spotlights-home...

   20V MAX LED Handheld Spotlight You’ll need to supply your own 20-volt DeWalt battery for this spotlight, but if you already have one on hand, this high-quality light checks all the right boxes.

3. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   Solar powered flashlights can be used in remote locations where it is impossible to find any source of electricity except for solar power. [4] A built-in solar cell array in a hand-held product has a very small capacity. The light output and run time of the solar flashlight are limited by the amount of energy that can be absorbed in a day.

4. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   The first mass-produced dry cell batteries came in 1896, and the invention of portable electric lights soon followed. Portable hand-held electric lights offered advantages in convenience and safety over (combustion) torches, candles and lanterns. The electric lamp was odorless, smokeless, and emitted less heat than combustion-powered lighting.

5. Solar traffic light - Wikipedia

   en.wikipedia.org/wiki/Solar_traffic_light

   Solar-energy-powered school traffic light Solar Panel Battery Enclosure on Traffic Light. Most solar traffic lights use LED lamps as they are more reliable [1] and have more advantages over other lighting devices like CFL lamps as they are more energy efficient, have a longer life span and turn on and turn off quickly. [2]

6. Solar lamp - Wikipedia

   en.wikipedia.org/wiki/Solar_lamp

   A solar lamp, also known as a solar light or solar lantern, is a lighting system composed of an LED lamp, solar panels, battery, charge controller and there may also be an inverter. The lamp operates on electricity from batteries, charged through the use of a solar photovoltaic panel. Solar-powered household lighting can replace other light ...

7. Mechanically powered flashlight - Wikipedia

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

   Mechanically powered flashlights were distributed by aid organizations to survivors of the 2010 Haiti earthquake since electric power was lost for a long period. A mechanically powered flashlight (UK: mechanically powered torch ) is a flashlight that is powered by electricity generated by the muscle power of the user, so it does not need ...