Amazon.com: EEMB ER34615 Non-Rechargeable 3.6V Lithium Battery Li-SoCl2 D Size 19000 mAh High Capacity UL Certified Single-Use 3.6V Lithium Thionyl Chloride Battery DO NOT Charge Battery : Electronics
ER14250 Lithium 1/2 AA Cell Button Top Battery - 3.6v 1200mah - $1.75