While the 1000 km range is the talk of the town, the actual story is the over 50% boost in energy density of the semi-solid state battery, which allows for a 150kWh battery pack the same size and weight as the previous 100kWh battery pack.
Since 1000km is visually striking, the 1000km range is merely a marketing gimmick. Whether ET7 can actually achieve this at highway speed and still be practical is debatable.
CFO had stated that the pack itself would have cost more than the ET5 car, which I estimate to be between $45k and $50k for the pack alone.
The lack of information on cycle life, cost, and so on suggests that it is more of a marketing strategy. Consider how much it costs to rent a pack and how long you receive it for. If the cycle life is low, they will most likely lose more money per pack.
I’m surprised Welion didn’t market the batteries to aviation/commercial vehicles as the first customers, where the cost and cycle life are more easily absorbed.