AGM batteries are designed to operate at room temperature and can withstand some temperature fluctuations. However, prolonged exposure to high temperatures can negatively affect battery performance, safety, and lifespan. Exposure to temperatures above 100 degrees Fahrenheit significantly reduces the battery’s lifespan and capacity.
High-temperature exposure can also dry out the battery’s electrolyte, reducing its ability to store energy. Furthermore, when charging AGM batteries at high temperatures, they are more prone to overcharge due to the increase in internal resistance, which can lead to the release of hydrogen gas. High levels of hydrogen gas, combined with the high temperatures, can create a dangerous and explosive situation.