Will Lead-Acid Batteries Reduce Mileage in Winter?
2 Answers
Lead-acid batteries will reduce mileage in winter. Lower temperatures in winter can affect the driving range, but the exact amount of mileage reduction depends on factors such as temperature and usage habits. Below are the relationship between range and temperature and the reasons for the range reduction: Relationship between range and temperature: Generally, for every degree drop in temperature, the battery's capacity decreases by about 1%, leading to a corresponding reduction in range. The specific mileage reduction can be calculated based on the data displayed by the vehicle's onboard computer. Reasons for reduced range in low temperatures: The lower the temperature, the harder it is for the electrolyte in the battery to diffuse, and the slower the chemical reaction rate of the active materials at both electrodes becomes, resulting in a drop in battery voltage.
Lead-acid batteries are indeed affected in winter, leading to a decline in their performance, which indirectly impacts the vehicle's range, although it may not directly reduce the driving distance itself. Inside a lead-acid battery, chemical reactions maintain the power supply. In low-temperature environments, the chemical reaction rate slows down, reducing both the battery's capacity and output power. For example, you might notice that starting the engine feels a bit harder, and the lights appear dimmer. In fuel-powered vehicles, lead-acid batteries are primarily used for starting. If the battery underperforms, the engine may require more attempts to start, slightly increasing fuel consumption and ultimately reducing the total mileage. Additionally, the increased air density in cold weather forces the engine to work harder to propel the vehicle, which is another reason for higher fuel consumption in winter. Based on practical experience, I recommend parking in a garage or using a battery warmer in winter, regularly checking the electrolyte level, and avoiding premature battery aging to maintain stable power. Overall, lead-acid battery issues in cold weather mostly cause indirect mileage loss rather than directly reducing the distance traveled. The key lies in proper maintenance.
