Investors have been concerned about slowing growth in electric vehicle (EV) sales. One reason is the lack of charging infrastructure. But battery maker Solid Power (SLDP 10.85%) is one of several companies that hopes to have a long-term solution. Solid Power shares popped today after fellow solid-state battery maker QuantumScape (QS 47.38%) announced some game-changing news. As of 2:45 p.m. ET, Solid Power shares were higher by 11.2%. Ending range anxiety That move was dwarfed, however, by the 47% spike in ...