A battery contains all the chemicals for the energy-producing reaction,and the means to reuse them, vs an IC engine draws oxygen frim the air and disposes of used reagents out the exhaust.
A battery on an EV contains the same energy as only about 2 gallons / 10 litres of liquid fuel.but the powertrain is far more efficient
New generation of battery technologies will improve the energy / weight ratio and ranges of 600 miles+ will be common in 20 years.
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