Name:EMD Form:Black Powder Purity:92% Usage:Dry Battery Functions&performance:Electrolytic manganese dioxide is the good depolarizator of battery, compared with the dry batteries made of natural discharged manganese dioxide, it has the features of greatly discharged capacity, great activity, small solidity, long life-span and so on .When mixed with 20%-30% EMD, the battery can discharge more 50%- ...