Forum Discussion
DrewE
Nov 17, 2017Explorer II
I haven't seen any hard figures on the Tesla truck in terms of battery capacity and the like, but based on some quite rough back-of-the-envelope sorts of computations I think they would need somewhere in the vicinity of 1000 kWh for a 500 mile range in a semi truck (assuming normal highway speeds). Recharging 80% of that (800 kWh) in 40 minutes means that quick charger is supplying about 1.2 megawatts. Even doing it overnight is 100 kW, or about ten 50A RV sockets running at maximum continuous load put together.
(The basis for my estimate was a brake specific fuel consumption of a typical diesel semi truck engine of about 0.3 pounds per horsepower-hour and a typical gas mileage of 7 mpg and a bunch of conversion factors. As this is a very rough estimate, I may be way off, even assuming I did the math more or less properly.)
Widespread usage of electric RVs will require significant upgrades to the electrical infrastructure of campgrounds.
(The basis for my estimate was a brake specific fuel consumption of a typical diesel semi truck engine of about 0.3 pounds per horsepower-hour and a typical gas mileage of 7 mpg and a bunch of conversion factors. As this is a very rough estimate, I may be way off, even assuming I did the math more or less properly.)
Widespread usage of electric RVs will require significant upgrades to the electrical infrastructure of campgrounds.
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