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2. Solar-powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Solar-powered_flashlight

   A typical solar flashlight can give useful levels of illumination on objects up to 50 metres away, and beam may be visible for much longer distances. The solar cells used for battery charging have an indefinite life expectancy. A solar powered flashlight may give several hours of light after being charged during the day. [3]

3. Headlamp (outdoor) - Wikipedia

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

   Headlamp attached to a helmet. A headlamp, headlight, or head torch is a light source affixed to the head typically for outdoor activities at night or in dark conditions such as caving, orienteering, hiking, skiing, backpacking, camping, mountaineering or mountain biking.

4. Mechanically powered flashlight - Wikipedia

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

   The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

5. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   An LED flashlight has a longer battery life than an incandescent flashlight with comparable output. [10] LEDs are also less fragile than glass lamps. LED lamps have different spectra of light compared to incandescent sources, and are made in several ranges of color temperature and color rendering index. Since the LED has a long life compared to ...

6. The 9 best rechargeable hearing aids, according to hearing ...

   www.aol.com/lifestyle/best-rechargeable-hearing...

   The Starkey Genesis AI battery offers up to 51 hours on a single charge — the best battery life of all the hearing aids we tested and researched. The hearing aids also offer a high level of ...

7. Maglite - Wikipedia

   en.wikipedia.org/wiki/Maglite

   2009: Next Generation Mag-LED Technology: Featuring a new Luxeon Rebel LED and extended battery life. 2010: Maglite XL100: offers a motion-controlled user interface using a built-in accelerometer 2010: Maglite XL50: This is a simpler version of the XL100, featuring three modes that can be activated with consecutive presses of the tailcap switch.