Best Practices for Charging and Discharging Sealed Lead-Acid
Battery Not Holding a Full Charge A faulty charger or damaged battery may cause the battery to not hold a full charge. Test the battery with a multimeter or try a different charger. Can you charge a sealed lead acid battery with a car charger? The ideal float voltage for a 12V sealed lead-acid battery is between 13.5 volts and 13.8