#### Pedaldude

##### Well-known member

Solid state battery is just a fancy new way of saying it doesn't use a hydrocarbon based liquid electrolyte that most current lithium ion batteries use. Just about every new battery technology has the goal of greater energy density since that's the greatest drawback of EVs. The other goal is to increase discharge cycles as well as the depth of discharge.

The internal combustion engine has the advantage of only needing to carry 1/15th of the needed products of combustion. For every pound of gasoline burned, you're also using roughly 14 pounds of air. That's why hydrogen fuel cells are a tempting solution to the energy storage dilemma.

Imagine that every time you used a tank of gas, your gas tank got smaller, and then every time you ran your gas tank down to Empty, you irreparably damaged it. So after 100,000 miles what started as a 20 gallon tank is now a 2 gallon tank but to fill it up, you still have to buy 20 gallons of fuel and to replace that fuel tank costs $7,000-$14,000. That is just a simplistic way to describe the limitations of current battery technology and why it has been so important that new technology is developed.

The internal combustion engine has the advantage of only needing to carry 1/15th of the needed products of combustion. For every pound of gasoline burned, you're also using roughly 14 pounds of air. That's why hydrogen fuel cells are a tempting solution to the energy storage dilemma.

Imagine that every time you used a tank of gas, your gas tank got smaller, and then every time you ran your gas tank down to Empty, you irreparably damaged it. So after 100,000 miles what started as a 20 gallon tank is now a 2 gallon tank but to fill it up, you still have to buy 20 gallons of fuel and to replace that fuel tank costs $7,000-$14,000. That is just a simplistic way to describe the limitations of current battery technology and why it has been so important that new technology is developed.

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