What type of battery does the TI-36X Pro use and how do I replace it?

The TI-36X Pro uses one 3 volt CR2032 lithium battery. To replace it, remove the protective cover, turn the calculator face downwards, remove the screws from the back with a small screwdriver, carefully separate the front from the back, remove the old battery, and slide in a new battery checking the polarity (+ and -). Press firmly to snap the new battery into place.