Bitcoin rose above $64,400 right after the U.S. Federal Reserve kept its policy rate unchanged, but slid back below $64,000 after Fed Chair Kevin Warsh’s hawkish remarks. Over 24 hours, it was up just 0.13%. The Fed held rates at 3.50 to 3.75%, with three FOMC members dissenting for a 25-basis-point hike. Other major crypto prices were mostly rangebound, while risk assets faced pressure from higher oil prices and rising U.S. Treasury yields.

Battery maker SK On is partnering with U.S. battery startup Factorial Energy to assess whether solid-state batteries can be mass-produced using SK On’s existing lithium-ion production lines. Under an MOU, the companies will review how SK On plants and equipment can support Factorial’s FEST solid-state technology. Factorial is conducting vehicle validation in North America with Stellantis, which has disclosed performance data for a 77Ah FEST cell. Factorial also works with other automakers and has signed similar non-binding agreements with materials companies.