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2. Electric shaver - Wikipedia

   en.wikipedia.org/wiki/Electric_shaver

   [11] [12] [13] Battery-operated electric razors have been available using rechargeable batteries sealed inside the razor's case, previously nickel cadmium or, more recently, nickel metal hydride. Some modern shavers use Lithium-ion batteries (which do not suffer from memory effect). Sealed battery shavers either have built-in or external ...

3. Lithium-ion battery - Wikipedia

   en.wikipedia.org/wiki/Lithium-ion_battery

   A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.

4. Comparison of commercial battery types - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_commercial...

   Under certain conditions, some battery chemistries are at risk of thermal runaway, leading to cell rupture or combustion.As thermal runaway is determined not only by cell chemistry but also cell size, cell design and charge, only the worst-case values are reflected here.

5. If you buy just one thing on Black Friday, it should be this ...

   www.aol.com/lifestyle/if-you-buy-just-one-thing...

   To charge, simply juice up the long-lasting lithium-ion battery. With the included quick-charge station, a full charge lasts about two weeks, making it a smart choice for travelers or people who ...

6. Wahl Clipper - Wikipedia

   en.wikipedia.org/wiki/Wahl_Clipper

   Wahl Clipper Corporation was founded due to Leo J. Wahl's patent for an electromagnetic hair clipper in 1919. [3] On February 2, 1921, he purchased a majority of the stock of his uncle's manufacturing company which made the clipper, and incorporated the business as Wahl Clipper Corporation. [4] In 1924, Leo Wahl patented a vibrating motor hair ...

7. These are the best Cyber Monday deals under $100: Walmart ...

   www.aol.com/lifestyle/cyber-monday-deals-under...

   Cyber Monday savings are on fire. We found the top deals you can shop under $100, including Disney+, Amazon devices, toys, and more.