New back up battery CR1620 installed along with 4 new amazon basic AAA batteries.  Tested and working.

This Texas Instruments TI-83 Graphing Calculator is a reliable tool for any student or professional in need of a calculator. With its powerful functions and easy-to-use interface, it is perfect for solving complex equations and graphing functions. The calculator comes with a cover for protection and has been thoroughly tested to ensure that it is in working order.

The calculator runs on batteries, making it easy to use on the go or in the office. Its sleek design and durable construction make it a great addition to any workspace, and its advanced features make it a must-have for anyone who needs to perform complex calculations. Buy with confidence knowing that this calculator has been tested and is ready to use.