PoOnHand will send your inquiry to all specialized distributors.
Battery, Non-Rechargeable, AA, Lithium Thionyl Chloride, 3.6VDC, 2.4Ah, Keeper II | Eagle Picher PT-2100
Descriptions of EaglePicher PT-2100 provided by its distributors.
Keeper II Lithium Batteries 3.6V AA
Mouser