The internal resistance of a lead-acid battery can vary depending on factors such as its size, design, age, and state of charge. However, for standard automotive lead-acid batteries, the internal resistance typically falls within a range of 3 to 15 milliohms (mΩ) when the battery is in good condition.
It’s essential to note that this range is a generalization, and actual internal resistance values can vary based on specific battery models and manufacturers. Additionally, as batteries age or undergo wear and tear, their internal resistance may increase, leading to reduced performance and capacity.
Regular maintenance and proper usage can help mitigate increases in internal resistance and prolong the life of lead-acid batteries.
