A high density cell stack is provided utilizing strips of flexible cathode material and flexible anode materials folded over each other at right angles. A suitable anode material is lithium and a suitable cathode material is manganese dioxide. The disclosed cell stacks are rapidly manufactured to provide...http://www.google.co.uk/patents/US5525441?utm_source=gb-gplus-sharePatent US5525441 - Folded electrode configuration for galvanic cells