BMW and Ford will start testing solid-state batteries from Solid Power

A Solid Power manufacturing engineer holds two 20 ampere hour (Ah) all solid-state battery cells for the BMW Group and Ford Motor Company
A Solid Power manufacturing engineer holds two 20 ampere hour (Ah) all solid-state battery cells for the BMW Group and Ford Motor Company

Early next year Solid Power will deliver 100 Ah solid-state pouch battery cells for BMW and Ford to test.


The investment positions Solid Power to produce full-scale automotive batteries, increase associated material output and expand in-house production capabilities for future vehicle integration. The BMW Group and Ford aim to utilize Solid Power’s low-cost, high-energy all solid-state battery technology in forthcoming electric vehicles.

Solid Power has demonstrated its ability to produce and scale next-generation all solid-state batteries that are designed to power longer range, lower cost and safer electric vehicles using existing lithium-ion battery manufacturing infrastructure.

Solid Power’s leadership in all solid-state battery development and manufacturing has been confirmed with the delivery of hundreds of production line-produced battery cells that were validated by Ford and the BMW Group late last year, formalizing Solid Power’s commercialization plans with its two long-standing automotive partners.

Solid Power is currently producing 20 ampere hour (Ah) multi-layer all solid-state batteries on the company’s continuous roll-to-roll production line, which exclusively utilizes industry standard lithium-ion production processes and equipment.

Both Ford and the BMW Group will receive full-scale 100 Ah cells for automotive qualification testing and vehicle integration beginning in 2022. Solid Power’s all solid-state platform technology allows for the production of unique cell designs expected to meet performance requirements for each automotive partner. Solid Power’s truly all-solid cell designs achieve higher energy densities, are safer and are expected to cost less than today’s best-performing lithium-ion battery cells.


Currently, Solid Power has been producing 20 Ah cells with an energy density of 330 Wh/kg. However, the new 100 Ah cells designed for automakers will be more energy dense, as the company aims to surpass 400 Wh/kg by 2022.

By replacing the flammable liquid electrolyte in a conventional lithium-ion battery with a sulfide solid electrolyte, battery cells become much safer even with NCM cathodes. This means that battery packs will not only become more energy dense, but also simpler and cheaper to assemble.

It seems that next year we’ll surpass 300 Wh/kg at the battery pack level and almost double what we have today in most electric cars.


Anyway, Chinese battery cell makers also aim to mass produce solid-state batteries by next year. Soon we’ll see who delivers this long-awaited technology first.



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Pedro Lima

My interest in electric transportation is mostly political. I’m tired of coups and wars for oil. My expectation is that the adoption of electric transportation will be a factor for peace and democracy all over the world.

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8 months ago

Very interesting, thanks Pedro. I had been thinking that solid state batteries were too far off to be important at this stage of the EV transition, but maybe they’ll actually start to make it into EVs in the next couple of years?

Is it me, or does this 20Ah cell look pretty large? Maybe it doesn’t weigh very much, but it looks like it could be 10x25cmx1cm (not including the tabs) which makes its volumetric density ~80Ah/L.
The 120Ah Samsung SDI prismatic cells are ~120Ah/L, so these solid state batteries might be hard to fit a lot of kWh in a compact EV.

Then again, my estimation could be off, if it’s 9cm*22cm*0.8cm, then the density is ~125Ah/L. This would enable 65Kwh in a standard size battery pack. (1m x 1.5m) . At 330Wh/kg, the cells would only weigh ~200kg, which seems pretty good.

8 months ago
Reply to  Pedro Lima

Maybe only comment from my side. With ASS batteries, yes they are much thinner compared to the li-ion battery… but you should also consider the phenomena of cell breathing and swelling, which makes them harder to implement in EV.