Places like Home Depot or lowes have loads of home improvement items, of which generators is obviously one. I would go there and talk to one of their workers.
No. Emergency lights are designed to turn ON when there is a power loss or outage either from their back up battery or from an emergency generator. In buildings which do not have back up emergency generators, (which most are) emergency lights require power supplied to them 24/7 to keep their batteries charged.
There is usually a reserve switching device or scheme which is activated when the power coming from the main grid disappears. When such an outage happens, the scheme will sense it and disconnect the circuitry from the main source of power (grid) and start up the emergency generators. When the main power is restored, the system will connect you back to it and turn off the emergency generator.
Carrier generators can be used to maintain electrical power during short and extended power outages. It can automatically sense when power outage occurs and will start working 30 seconds after power shorts out. Generators are stored outside of the home.
Emergency power generators can help you stay comfortable and safe during a power outage. If any member of your household is elderly or has medical needs, a generator is a must. The generator can be used to run oxygen, CPAP devices, nebulizers and other appliances. Smaller generators can only run a few appliances at once, so you will need to unplug unnecessary devices.
Honeywell generators keep an extra amount of backup power in case of an emergency power outage. This assures that you will always have electricity supplied to your house.
Generators that use gasoline are an excellent purchase for those who want a reserve source of energy in case of a power outage or other emergency. In contrast to diesel generators, gasoline generators are generally used for shorter periods of time. Their use of gasoline, rather than diesel, lets owners utilize the gasoline from a vehicle's gas tank if necessary. This advantage also makes these generators ideal for use in remote areas for activities such as camping.
Some great sites where you can find this kind of item for sale are: http://www.cdsemergencypower.com/ and http://www.idealsupply.com/main.cfm?id=210&action=published
There are several different types of power generators that can be used in the event of a power outage. Of particular interest would be either diesel or propane generators. You must first determine the power requirement you will have (power draw and the desired duration) and then source the best product.
Many hospitals have back-up diesel generators. Smaller, rural hospitals may not, and could undergo a power outage.
A winter power outage can be a problem if it lasts long. One of the biggest challenges is an evening outage that lasts very long, due to the chilly weather. This is even more pronounced if your family doesn't have a fireplace. Backup generators can provide an alternative power source during emergency conditions, allowing you to keep your family warm while power crews work hard to get the system up and running again. Test your backup periodically to make sure you know how to use it in an emergency.
The primary use for Generac generators depend on the model, however the underlying theme is the need for backup power in the event of a disruption or outage.
You can find a battery powered generator at your local home depot store, some do carry it. If not, try Amazon.com or Bowens USA. They carry a lot of brand name battery powered generators.