Unsurprisingly, lithium-ion batteries are susceptible to the elements, and high temperature extremes can vastly decrease the life of a battery. It is never pleasant when a laptop battery finally dies and one is faced with either spending a significant amount of money for a new battery or solely relying on an external power source. A few things can help prevent this from happening prematurely.
How to Prolong Lithium-based Batteries
^To learn more about the science behind batteries check out Battery University.