IEC TS 62607-4-1:2015(E) provides a standardized method for the determination of electrochemical properties of cathode nanomaterials of, for example, lithium-ion batteries utilizing lithium iron phosphate to enable customers to decide whether or not a cathode nanomaterial is usable, and select a cathode nanomaterial suitable for their application. This second edition cancels and replaces the first edition published in 2014. This edition constitutes a technical revision.