Because of emergency broadcasts by government departments. If you rely solely on mains-powered equipment, it may fail due to a power cut. battery-powered equipment is independent of the mains.
A battery-powered radio operates on electrical energy stored in a chemical form within the battery. When the battery is connected to the radio, a chemical reaction releases stored energy in the form of electrical current to power the radio's components.
because it doesn't require electricity from an outlet
In a battery-powered radio, chemical energy stored in the battery is transformed into electrical energy, which powers the electronic components of the radio. This electrical energy is then converted into sound energy and radiowaves, allowing the radio to produce sound.
In a battery-powered radio, chemical energy stored in the battery is transformed into electrical energy when the battery provides power to the radio's circuitry. This electrical energy is then transformed into sound energy and electromagnetic energy (radio waves) as the radio converts the electrical signals into sound waves that we can hear.
I would recommend lots of food and water, a battery powered radio and a place to go after the hurricane.
The difference between a Philips portable radio and a standard radio are that a Philips radio is battery powered, while a regular radio is electrically powered.
Such a radio was commonly called a Crystal Set .
From my research, electric radio controlled airplanes are powered by rechargeable batteries. A battery used for this purpose is the 150 mAH 3.7V Lipoly Battery. Here is a link to the battery information: http://www.hobby-lobby.com/blade_msr_upgrade_150_mah_3.7v_lipoly_battery_176851_prd1.htm
Mobile radio communication is performed by utilizing a battery-powered radio in the field in order to transmit messages to a fixed home base receiver.
its is powered by the battery inside the car but to get the stations needed is it tracked by the antena on the car
during a thunderstorm you should get inside away from metal objects and water, if you have a tornado shelter get in it and turn on a battery powered radio to the weather. don't stand in any open, high,electric areas and especially don't go near any trees. just stay home with a good book and a battery powered flashlight. that's what i do.
You want a weather radio (Battery powered), your local TV station on with the weather updates, & you might also want your laptop for looking at weather radars.