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.
because it doesn't require electricity from an outlet
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.
bluetooth mouse
First, Disconnect battery from vehicle, negative then positive. Run speaker inputs from the radio to the amp. Supply fused power from the +battery terminal connector to the amp. Ground the amp to the body/frame. Find a circuit to supply remote power (something that is only powered when the stereo is on... powered radio antenna works well). Run remote power wire from this powered circuit to the remote power input on the amp. Run your speaker wires from the amp to the speakers. Connect battery, positive then negative. Turn radio on. Test.
There is no real opportunity to buy anything during a tornado. Tornadoes typically form, strike, and dissipate in a matter of minutes. But things that can be bought in preparation for a tornado include a battery powered weather radio and a gas powered generator as tornadoes often knock out power even if they don't cause serious damage to structures.