Deka Batteries. Deka is the core battery brand of East Penn Manufacturing, one of the very few US battery manufacturers existing today. Started in 1946 in Pennsylvania's Maxatawny Township by father and son, DeLight E. Breidegam Sr., and Jr., "Deka" comes from combining "DeLight" and "Karl" (Karl Gasche being their first engineering hire). Since then, the Deka battery brand has earned a legendary reputation for quality battery power across many industrial applications.