Akasol, a Germany-based battery producer spun out from TU Darmstadt, has floated on the Frankfurt Stock Exchange, with shares opening at €48.50 ($57) and target proceeds of €100m.

The figure represents the lower end of Akasol’s pricing range, which that had an upper target of €64.50. Shares had climbed to €54.50 by the market close on Friday.

Akasol began life as a research project at TU Darmstadt in 1990, before incorporating as a limited business in 2008. The spinout is…