You seem to believe every thing they say. I watched it live. I'll give Musk credit for his knowledge of the details but they have a lot of work to make it happen. My guess is that it will take longer than they were predicting and they may not live up to all of their goals. Meanwhile other battery makers are working on similar advances. Time will tell. Back to your original question. I doubt that Tesla would make batteries for Toyota vehicles but I believe that we can look forward to advances from independent suppliers at some point.
Design is easy; prototype is harder, and; mass production the hardest of all. Since Tesla plans to increase vehicle production by about 50% per year, they need batteries and don't want to play in a bidding war with other EV makers. Not likely because the Prius batteries have such small capacity and poor thermal management. From memory: ~8.8 kWh in cabin air cooled, 2017 Prius Prime, 25 mi EV ~18.3 kWh in liquid cooled 2014 BMW i3-REx, 72 mi EV ~55 kWh in liquid cooled 2019 Std Rng Plus Model 3, 240 mi EV The Prius family was the best hybrid around but the Prius Prime became 'driveway art' once I got our BMW i3-REx. As for our Tesla Model 3, bought March 26, 2019 and it has 29,354 miles. We're keeping the BMW i3-REx with 42,603 miles as backup for the Tesla. Bob Wilson
First, all of Tesla's production is going to their own products. They could become a supplier to others at some point in the future. Then, hybrid batteries require a different performance profile from those for plug ins. I don't see Tesla offering those when there are already other battery companies doing so. Then these batteries will likely be designed with liquid cooling in mind. Will the Prius being using that by the time Tesla batteries are available? There is a greater chance of issues with every new model and redesign, regardless of the car company's age. The gen2 Rav4 was once CR's example of how far a new design's reliability can fall from the company's norm. In a market(Norway) saturated with Teslas. New is novel, though I do wish VW luck with their BEVs.Until Giga Germany comes online, Tesla cars will also have an import tax adding to the price. Yet, VW, who regularly switches sales position with Toyota, has cut their FCEV funding, and is going with BEVs. China cut their subsidies for FCEVs, and will only give money to hydrogen projects that prove they will advance their goals for hydrogen vehicles. What about the fuel cell? Currently, they can lose 10% of their wattage output by 60k miles. Can they be recycled? Then there is the carbon fiber tank. If they are recycled, the most common method would leave the fibers unsuitable for new tanks, as they would be cut up into too short of a length. Yes, the Miria currently uses NiMH. From the gen3 Prius or Camry hybrid. Nissan's FCEV system uses a much smaller solid oxide fuel cell, with a big battery providing the power. Test mules have been their little commercial EV van, which basically uses the gen1 Leaf drive train, with the charger replaced by the fuel cell system.
