Cigarette

The Dual Cigarette Lighter Socket Power Adapter will allow you to power two cell phones at the same time in your car. Just plug the power adapter into your power socket and it’s ready. This is especially useful if you have multiple cell phones in your car or if you want to power another electronic device while your cell phone is charger. Conveniently extends your vehicle cigarette power source close to your equipment. Especially for hard-to-reach cigarette 12-volt power source.     Expands Your 12-Volt Cigarette Lighter Socket Into TWO Outlets    For use with all chargers / eliminators    One year warranty    Compatible with Any Cellular Phone    Features: LED Power Indicator    Color: Black     Use With All 12-Volt DC Appliances Such As:  Radar Detectors, Spotlights, Video Games, Recorders, Scanners, Cell Phones, CD Players, and More

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Or do we use the same amount of fuel using the cigarette lighter socket than if we weren’t using it?
Thanks!
I only thought it might because obviously electricity can’t be free, and the electricity from the lights etc comes from the battery being charged by the car engine running and using FUEL to power the battery, so surely not using the battery would save fuel? Or is it negligible and if we didn’t use appliances the energy would be lost as heat and friction anyway?

A tiny amount of fuel is used.

Lets say that you cruise at 60mph, your vehicle uses 15hp (11.2kW) to maintain that speed. You ipod charger uses maybe 10W. So your fuel economy will drop by 10/11200 = 0.09%

Thus is you get 30.00 mpg at a steady 60mph with out charging the device, now you’ll get 29.97 mpg during the time it takes to charge the device.

To put this in perspective, if you change your cruising speed by ¼ mph, it will have a greater effect on your fuel consumption than charging an ipod or cell phone.

Technorati Tags: 2kw, Appliances, Car Engine, Car Phones, Cell Phone, Change Speed, Charging An Ipod, Cigarette Lighter Socket, Cruise, Cruising, Free Electricity, Friction, Fuel Consumption, Fuel Economy, Ipods, Mpg, Perspective, Power Battery, Running