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2. Uninterruptible power supply - Wikipedia

   en.wikipedia.org/wiki/Uninterruptible_power_supply

   The run-time for a battery-operated UPS depends on the type and size of batteries and rate of discharge, and the efficiency of the inverter. The total capacity of a lead–acid battery is a function of the rate at which it is discharged, which is described as Peukert's law. Manufacturers supply run-time rating in minutes for packaged UPS systems.

3. These Editor-Recommended Bladeless Fans Are Designed to Cool ...

   www.aol.com/lifestyle/bladeless-fans-cool-home...

   Bladeless Desk Fan. In terms of desk fans, the Conbola is an option that stands out because it’s battery-operated versus exclusively working off corded power.

4. Computer fan - Wikipedia

   en.wikipedia.org/wiki/Computer_fan

   Six 80 mm fans, commonplace components in earlier personal computers (either as a pair or mixed with fans of other sizes) A 30-millimetre (1.2 in) PC fan in a square black plastic chassis lying on the hub of a circular one of translucent plastic sized 250 mm (9.8 in)

5. Low-power electronics - Wikipedia

   en.wikipedia.org/wiki/Low-power_electronics

   With the development of portable computers however, the requirement to run a computer off a battery pack necessitated the search for a compromise between computing power and power consumption. Originally most processors ran both the core and I/O circuits at 5 volts, as in the Intel 8088 used by the first Compaq Portable. It was later reduced to ...

6. Fans swear this cordless vac is better than a Dyson - AOL

   www.aol.com/lifestyle/dreametech-t30-cordless...

   But many have a battery life that's subpar at best. Not the Dreametech T30 . This stick vacuum can run for up to 90 minutes on a single charge, and fans swear it's better than its Dyson counterpart.

7. Fan (machine) - Wikipedia

   en.wikipedia.org/wiki/Fan_(machine)

   A household electric fan A large cylindrical fan. A fan is a powered machine that creates airflow. A fan consists of rotating vanes or blades, generally made of wood, plastic, or metal, which act on the air. The rotating assembly of blades and hub is known as an impeller, rotor, or runner. Usually, it is contained within some form of housing ...