Charging a Electric car from household outlet could take 30 hours!

Posted on July 7, 2008. Filed under: Uncategorized |

…an interesting note in the article from Greenwich Time is the length of time required to charge up the Roadster’s battery. They note that charging the battery from a normal household outlet could take up to 30 hours. The Roadster’s battery has a capacity of 53kWh. Tesla quotes a charge time of 3-3.5, but that is based on charging from a 220V 80A circuit. If, on the other hand, you plug the car into a typical outlet in your living room, you would only have 15A flowing at 110V. That’s 53,000W / (110V * 15) = 32.12 hours. So if you plan to get yourself a plug-in electric car with any kind of serious range, be prepared to have an electrician install a high current outlet to charge it. At the very least you’ll want a 220V/40A circuit for overnight charging in 6-7 hours.

Source: Greenwich Time


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