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ER14250 1/2AA LITHIUM BATTERY 3.6V | eBay
Amazon.com: 2X EEMB ER14250 1/2 AA 3.6 V Lithium Battery with FT Tabs 1200 mAh Li-SOCL₂ 3.6Volt Lithium Thionyl Chloride Batteries Nonrechargeable UL Certified : Health & Household