FDK are one of the world's leading producers of lithium batteries in primary cylindrical & coin cells shapes & sizes. Lithium rechargeable coin cells are also part of the range.
Whether labelled as FDK or Sanyo. It is the same product from the same factory with identical specifications. Some product data sheets may still be under the Sanyo brand. Specifications & product data sheets under the FDK brand will become available as they're progressively produced. Please click the link below for individual product information & data sheets.