AllCell Technologies, a local battery technology firm, is being scooped up by Beam Global, a publicly traded clean-tech company that makes charging stations for electric vehicles. Beam (NASDAQ: BEEM) said Wednesday that it's buying Chicago-based AllCell, a company that makes safer lithium-ion batteries, in an all-stock deal. The acquisition, expected to close March 1, could be worth up to $30 million based on performance earn outs, according to Bloomberg. AllCell, founded in 2001, makes small,...