This is a nice chart, but what we need with EVs is modularity of the batteries. Imagine you're buying a 100kWh battery equipped EV when it's 15 year's old and t

This is a nice chart, but what we need with EVs is modularity of the batteries. Imagine you're buying a 100kWh battery equipped EV when it's 15 year's old and the battery has 20% of its capacity, but it still weights the same as it was new. The rest of the car except few cosmetic issues is in great shape. If the battery consisted of 10 modules 10kWh each, you could sell for scrap all 10, add some money and buy let's say two new packs for a total of 20kWh (because you can't afford more now and you need a car for a 20 mile commute only). Your car becomes a lot lighter, you have an option to add capacity gradually, but even more importantly all the raw materials from the old battery that had only 20% of its capacity can now be recycled into 10 new 10kWh batteries. If we are serious about moving to electric cars for environmental reasons we have to look beyond co2 and this could be one of very good first steps.