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
Complete Guide On How To Charge A Lead Acid Battery - Power Sonic
What will be the voltage of a fully charged 12v battery? If it is 12.8, then is 12.8v during charging or after removing the charger? - Quora