Rimac’s Solid-State Battery Will Already Be Charged While You’re Stuck Getting Coffee

• Rimac has unveiled a new solid-state battery that promises ultra-fast charging speeds and impressive energy density.
• Unveiled today at the IAA Mobility show in Munich, Germany, the upcoming battery has a discharge power of 850 kW.
• It’s smaller, weighs less and charges over two times faster than the company’s latest liquid-based cylindrical cells–under 10 minutes to go from 10% to 80%.

Rimac Technology, the parts developer and manufacturer that’s wholly owned by the Rimac Group, unveiled a game-changing solid-state battery pack for electric cars that promises to make top-ups on the go faster than filling up with gas and getting a coffee.

Developed in collaboration with ProLogium and Mitsubishi Chemical Group, the state-of-the-art liquidless high-voltage pack was unveiled today at the IAA Mobility show in Munich, Germany, alongside the latest iteration of the Croatian company’s liquid-based cylindrical cell pack.

Despite the advancements on the cylindrical cell front, the solid-state pack blows it out of the water with its specs. Let’s get the charging time out of the way first, because that’s the biggest differentiator by far. According to Rimac, a 100-kilowatt-hour solid-state pack can be charged from 10% to 80%, which is the go-to metric for road trips, in just six and a half minutes.

That’s faster than it took me to fill up with gas on a recent road trip I took with my plug-in hybrid wagon, where I had to wait for two people ahead of me to pay for their fill-ups. This is a huge step forward, but there is one caveat: DC fast chargers, which are slowly but surely offering 350 kW speeds across the land, will have to step up.

Thankfully, there’s still time for charging operators to install even more powerful stalls, as Rimac’s solid-state battery will head to a high-performance EV near you starting in the fourth quarter of 2027. As a tier-one supplier for several automakers, Rimac Technology’s parts are already being fitted to cars made by the BMW Group and Porsche.

Getting back to the specs, the next-generation high-voltage battery is marketed as being capable of retaining over 95% of its energy at -4 degrees Fahrenheit (-20 degrees Celsius). There’s also no risk of fire or explosion at the cell level. That’s a big deal, as it makes fire safety a non-issue.

The voltage is rated between 540 and 907 volts. The power density is 2,210 Watts/kilogram and 2,980 Watts/liter, which is a big improvement over the latest cylindrical cell pack, which boasts 1,753 W/kg and 2,575 W/l. All of this means that a 100 kWh solid-state pack needs less space than a comparable cylindrical cell pack–285 liters, to be precise, down from 320 liters. It also weighs less–846 pounds (384 kg) versus 1,036 pounds (470 kg).

Rimac’s solid-state pack has pouch cells assembled using the cell-to-pack method. The cells’ chemistry consists of 90% nickel, 5% manganese and 5% cobalt for the cathode and 100% silicon for the anode. The pack is housed in a Thermoplastic composite enclosure and is cooled indirectly with refrigerant, which is different from the cylindrical-type pack, which uses indirect Water-Glycol cooling.

At IAA Mobility, Rimac Technology also unveiled several new electric drive units and domain controllers.