Long term use of batteries at temperatures ranging from 40oC to 50oC can lead to thermal runaway. What are the impacts on batteries?

Long-term use of batteries at temperatures between 40°C and 50°C can lead to thermal runaway, causing the battery to heat up and expand dangerously. Therefore, it is not recommended to use batteries for extended periods within this temperature range. To mitigate risks, batteries should be kept away from heat sources and environments with elevated temperatures.