CR2032 Lithium Coin Cell Battery : ID 654 : $0.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Brightown 20 Count CR2032 3V Lithium Coin Cell Battery, CR2032 Button Battery for Watch Car Key, Long Lasting Power in Child Resistant Packaging, 8-Year Shelf Life – 20 Pack : Health & Household
5PCS EEMB CR2032 Battery 3V Lithium Battery 2032 Coin Cell Batteries 3 Volt Li-MnO₂ Button Battery UL Certified Single Use Battery : Health & Household