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2. Telechron - Wikipedia

   en.wikipedia.org/wiki/Telechron

   The electric clock market grew rapidly in the 1930s, and Telechron's patented power interruption indicator gave his clocks an advantage over competing synchronous clocks, but by the 1950s battery-operated clocks that weren't dependent on the power grid took market share, and in the 1960s the quartz clock replaced synchronous clocks.

3. Electric clock - Wikipedia

   en.wikipedia.org/wiki/Electric_clock

   These keep time by counting the oscillations of a calibrated tuning fork with a specific frequency. These were only made in battery-powered form. Battery-powered clocks have been made using the schemes above with the obvious exception of a synchronous movement. All battery-powered clocks have been largely replaced by the lower cost quartz movement.

4. Time switch - Wikipedia

   en.wikipedia.org/wiki/Time_switch

   The switch may be connected to an electric circuit operating from mains power, including via a relay or contactor; or low voltage, including battery-operated equipment in vehicles. It may be built into power circuits (as with a central heating or water heater timer), plugged into a wall outlet with equipment plugged into the timer instead of ...

5. These Are the Best Emergency Radios to Keep You Updated ...

   www.aol.com/best-emergency-radios-keep-updated...

   This model is rechargeable with a USB-to-AC wall outlet, and the 2000mAh Lithium-ion battery can be charged to full capacity with solar panels or the hand crank. Fully charged, the battery can ...

6. Clock - Wikipedia

   en.wikipedia.org/wiki/Clock

   In clocks that use AC power, a small backup battery is often included to keep the clock running if it is unplugged temporarily from the wall or during a power outage. Battery-powered analog wall clocks are available that operate over 15 years between battery changes.

7. Kit-Cat Klock - Wikipedia

   en.wikipedia.org/wiki/Kit-Cat_Klock

   An original model clock with packaging from the 1940s A newer black model clock displays four paws. The Kit-Cat Klock is an art deco novelty wall clock shaped like a grinning cat with cartoon eyes that swivel in time with its pendulum tail. It is traditionally black, but models in other colors and styles are also available.