Is a 10V reading normal for a 12V car battery?

[DeKira]

No, a 10V reading is not normal for a 12V car battery. Normal voltage range for car batteries: The battery voltage should measure between 11.8V-12.8V before starting the engine, and between 13.2V-14.8V after starting. During engine cranking, the voltage shouldn't drop below 11V to be considered normal. Regularly check your battery's condition - immediate charging is required when voltage falls below 10.8V. Battery maintenance tips: Keep the battery clean and dry, ensuring vent holes remain unobstructed. Clean any oxide buildup on terminals or clamps, then apply a thin layer of grease to prevent corrosion. Fully charged batteries shouldn't remain undercharged for extended periods; perform regular charging to avoid permanent damage.