I'm reading that a good fully charged battery should be at 12.3 V resting. My battery has been sitting on a smart charger and maintainer and says 12V only and the charger
GTK 33140 3.2V 15Ah Cylindrical Lifepo4 Battery for DIY 12V 24V 48V 60V 90Ah 150Ah AGV UPS Solar System Golf Cart Battery Pack - AliExpress
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ACDelco Super Alkaline 9-Volt Battery (12-Pack) AC265 - The Home Depot