>Petrol's higher energy density doesn't matter as much as people think.
When vehicles uphill, ramp, and fight with the increasing wind resistance due speed, it is needed a high torque for to motion.
The petrol's energy density is translated in high torque, that the gearbox latter transforms progressively.
In electric vehicles, generating high torque and cooling the overheated coils for to obtain such high torque drains the battery quickly, the range drops quickly.
And for to increase the range, more weight is added (more batteries), that requires higher torque for motion, that requires more energy again, and so on.
This is why the energy density it is important, in batteries are the watts hour per kilogram. As also it is important the number of cycles before such batteries start to drop energy density until to fail (to note the weight keeps being the same along all of this degradation).
With the current technology, due the magnetic fields strength generated in the coils, and the energy density of the batteries, EVs just can not compete with petrol vehicles. It is about torque, among other things.
What is needed? batteries with bigger energy density ( higher Wh/Kg with higher number of recharge cycles), and/or higher efficiency generating magnetic fields of high strength (ambient superconductivity, also stronger magnets would help some coil's topologies).
Regardless of theorical efficiency or not of the energy, in practice the ICE gets the torque needed by the vehicle for driving on all types of slopes (and speed, by transforming part of that high torque with the gearbox).
This is why electric and combustion vehicles have such different ranges at even the same weight. Nowadays.
Such high torque is needed at the same moment the vehicle doesn't circulate on a flat terrain, or when have to reach highway speeds.
For to get at least the same ranges, the electric vehicle must reduce the energy consumption for the generation of the required torque (and speed), or needs to increase the energy density of the battery in companion of increasing the recharge cycles.
will be possible to achieve this? of course.
(The losses cooling or heating the battery and avoid the self-discharge should get the same advances, as it's counted as stored energy but it's not used for motion)
When vehicles uphill, ramp, and fight with the increasing wind resistance due speed, it is needed a high torque for to motion.
The petrol's energy density is translated in high torque, that the gearbox latter transforms progressively.
In electric vehicles, generating high torque and cooling the overheated coils for to obtain such high torque drains the battery quickly, the range drops quickly.
And for to increase the range, more weight is added (more batteries), that requires higher torque for motion, that requires more energy again, and so on.
This is why the energy density it is important, in batteries are the watts hour per kilogram. As also it is important the number of cycles before such batteries start to drop energy density until to fail (to note the weight keeps being the same along all of this degradation).
With the current technology, due the magnetic fields strength generated in the coils, and the energy density of the batteries, EVs just can not compete with petrol vehicles. It is about torque, among other things.
What is needed? batteries with bigger energy density ( higher Wh/Kg with higher number of recharge cycles), and/or higher efficiency generating magnetic fields of high strength (ambient superconductivity, also stronger magnets would help some coil's topologies).