The batteries have exploded. see photos

This listing is for a brand new, factory-sealed Texas Instruments TI-83 Plus Graphing Calculator. It is still in its original blister packaging, ensuring it's untouched and ready for use. The TI-83 Plus is a reliable and widely used calculator for students and professionals alike, ideal for Algebra 1 & 2, Trigonometry, Statistics, Business & Finance, Biology, and Physics. The package indicates compatibility with the TI-84 Plus Silver Edition and includes features like upgradeable software, adjustable contrast, pull-down menus, function graphing, equation solver, and matrices. It comes with a protective cover, unit-to-unit link cable, 160K available RAM, 96KB archive RAM, and backup/AAA batteries. Please note the Duracell batteries included show signs of corrosion due to age (manufacturing date on batteries is March 2013), and while the calculator itself is new, the batteries will likely need replacement upon opening. A USB computer cable (sold separately) is mentioned on the front of the packaging. Perfect for academic use or as a backup.

The batteries have exploded. see photos