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2. Time switch - Wikipedia

   en.wikipedia.org/wiki/Time_switch

   A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952.

3. Tesla Powerwall - Wikipedia

   en.wikipedia.org/wiki/Tesla_Powerwall

   The Powerwall 1 battery uses nickel-manganese-cobalt chemistry [31] and can be cycled 5,000 times before warranty expiration. [ 31 ] [ 32 ] The Powerwall has a 92.5% round-trip efficiency when charged or discharged by a 400–450 V system at 2 kW with a temperature of 77 °F (25 °C) when the product is brand new. [ 14 ]

4. 20 useful and innovative gadgets to make life easier for ...

   www.aol.com/lifestyle/products-to-make-life...

   Sunbeam 16986 3-in-1 InstaBeam LED Light, pack of 3. More options. ... It's also possible to mount it on the wall to keep it out of sight. ... Use the built-in rechargeable battery or connect it ...

5. Battery pack - Wikipedia

   en.wikipedia.org/wiki/Battery_pack

   Lead-acid automobile battery pack consisting of 28 Optima Yellow Tops Lithium-ion battery pack for Lucid Motors. A battery pack is a set of any number of (preferably) identical batteries or individual battery cells. [1] [2] They may be configured in a series, parallel or a mixture of both to deliver the desired voltage and current. The term ...

6. 20 genius gifts that make life easier, from lawn work to laundry

   www.aol.com/lifestyle/gifts-that-make-life...

   Sunbeam 16988 5-In-1 Night Light & Emergency Flashlight. ... set timers and reminders or ask how many ounces are in a cup — an Amazon Echo device can do it all. ... Use the built-in rechargeable ...

7. Telechron - Wikipedia

   en.wikipedia.org/wiki/Telechron

   Telechron—now the "Clock and Timer Division" of GE—declined in the 1950s, mainly because batteries had become much more long-lived and reliable. Battery-powered clocks have the obvious advantage of not depending on the proximity of a power outlet, and do not require the often somewhat unattractive electric cable.