Lithium-thionyl chloride (Li-SoCl2) battery pack features 3.6V Operating voltage and 1200mAh capacity in a small 1/2AA form factor with Molex(2695) 22-01-3027 (2 pin) Termination, BS1200C1425001S1PCMW | GlobTek
Saft LSH20 D-Cell Lithium Battery|3.6V 13000 mAh - Bulk
Lithium Type Batteries - Thionyl Chloride 3.6v - C - BatteryStore.com