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Originally Posted by Guest
Trying again. Entropy is a fundamental property of matter. What that means is it is involved in any chemical reaction. If you are making gasoline, paint, steel, plastic or batteries, entropy is involved. There are no special rules for batteries. Because entropy is involved in making steel doesn't mean your car is super expensive.
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What he doesn't understand is this...
The suns power is locked up in oil. The sun and earth ALREADY DID THE WORK of putting the energy there. We just pump it out and use it...it's basically FREE energy. It's like a never ending "battery"...portable power...basically free.
Creating a battery to supply the SAME amount of energy as that barrel of oil takes a WHOLE LOT OF ENERGY because WE are putting the energy into the BATTERY. And we MUST put in MORE than we get out.
The reason I used entropy was to try to explain that once it's used it's gone...the barrel of oil OR the battery charge. Getting "another charge" of energy is as simple as pumping it out of the ground for oil...but for the battery WE must put that power back in and it is therefore LESS efficient to run vehicles on batteries than fuel.