what car battery voltage is too low Anything below 12 volts is flat & 12 volts is about 50% charged,12.4 volts is 75% charged & 12.6+ volts is 100% charged !
2.1: SOC vs. no-load terminal voltages of a typical 12 V lead-acid battery. | Download Scientific Diagram
![Battery State-Of-Charge Chart For Voltage & Specific Gravity | Solar panel charger, Solar battery, Deep cycle battery Battery State-Of-Charge Chart For Voltage & Specific Gravity | Solar panel charger, Solar battery, Deep cycle battery](https://i.pinimg.com/originals/3b/e9/75/3be9757751a422ed34a83f044f0cbd3e.jpg)