Publisher Summary Manganese dioxide- magnesium perchlorate (primary) batteries are available in two types: the nonreserve type ready for use off the shelf requiring no activation; and the reserve type, which usually contains the active electrode materials but requires the addition of water or an electrolyte just before use. Eagle Picher manganese dioxide-magnesium perchlorate batteries of reserve-type type meet the requirements of SCS ELCD-2010/0001. The batteries are nonhazardous, being vented to atmosphere, and nonexplosive; the electrolyte is far less corrosive than that used in conventional alkaline batteries. The theoretical energy density is 242 W/kg against a practical energy density of 110 W h/kg as cells and 88 W h/kg as batteries. The open-circuit voltage is 2.0 V and the nominal working voltage is 1.55 V/cell. The output range available is 2-300 W with rated capacities between 3 and 120 A h. Marathon manufactures the BA4386 non-reserve battery, which serves as the power source for the PRC 25 and PRC 77 transceiver sets. This battery consists of 10 CD-size cells in series-parallel construction.