RVing message boards > The Shade Tree

How many gallons of gas to charge an iPhone?

(1/3) > >>

Gary RV Roamer:
How many gallons of gas would it take to charge an iphone?  Not as silly a question as it sounds, once you start thinking of energy equivalents and what engineers call "energy density".

Would you believe that the energy in a gallon of unleaded regular gasoline (the real stuff, not gasahol) would charge an iphone every day for almost 20 years?  Read about that and other interesting energy facts in this short article from Exxon.

http://www.exxonmobilperspectives.com/2011/12/14/how-many-gallons-of-gasoline-would-it-take-to-charge-an-iphone/

Ned:
Yep, our electronic gadgets are really inexpensive to run, if not to purchase.  This article says it costs $1.36/year to charge an iPad and only $.38/year for an iPhone 4 at the national average cost of 11.49 cents per kilowatt-hour.  I expect other tablets and smartphones would be similar.

Wendy:
And if you plug them into your cigarette lighter while you're driving around, they cost you nothing to recharge.

Ned:
Almost nothing, TANSTAAFL remember :)

Wendy:

--- Quote from: Ned on June 25, 2012, 06:38:07 PM ---Almost nothing, TANSTAAFL remember :)

--- End quote ---

Thank you RAH :)  I figure the decrease in my mpg when my electronic doo-dads are plugged in to the cig plug is too miniscule to calculate.
 
Wendy

Navigation

[0] Message Index

[#] Next page