I didn't follow this part, there’s an energy loss in the process of charging the battery and there’s a loss in the process of converting from dc battery to ac traction motor, but it’s well shy of 20%. The high amperage involved in both charging and discharging mean losses are low (because if they were high, you’d generate so much heat as to make the system unusable)

>> EVs powered by oil power plants is not a good use of energy

It’s a huge step forward from ICE. You’ve cut disease rates in the population by moving tail pipe emissions away from population centres. You’ve swapped a circa 30% efficient process for a circa 40%-60% efficient process. Not to mention the emissions benefits of LNG over Gasoline or diesel.