Your tablet, like all electronics, is a middle-of-the-road kind of device when it comes to temperatures. It hates extremes, instead favoring a Goldilocks environment that's not hot, not too cold. In fact, heat is one of the worst things for battery performance. Not surprisingly, Apple advises keeping iPads out of the sun and out of hot cars, including the trunk, on sweltering days. The benefit: longer battery life and overall lifespan. Of course, it's not always possible to keep a tablet at a room temperature of 72 degrees F (22 degrees C) all the time, particularly if you bring your slate along on personal or business road trips.