January has been a bit of a jumpstart for solid-state battery stock QuantumScape (NYSE:QS). The company, known for its batteries that can be charged 1000x without degradation, has short-term potential as a way for investors to ride rallies. But the long-term picture for QS stock appears to be blurry, and investors should this factor before betting any significant sum on this stock. In my January 8 article about QuantumScape, I expressed my rather bearish view of the stock because of two things: no regular u ...