That’s like saying that battery capacity isn’t really kWh because there’s no real energy storage when they are empty. The unit for energy capacity output is sti

That’s like saying that battery capacity isn’t really kWh because there’s no real energy storage when they are empty. The unit for energy capacity output is still Watt (or horse power seconds per year or any other unit). Besides that, those battery cells are charged as part of the production process (though not completely), so I could argue that actual energy is leaving the factory.