How do you check battery level for scientific calculator fx-570ms?

To check the battery level on a Casio fx-570MS scientific calculator, you need to press the "SHIFT" button followed by the "7" button to access the "SETUP" menu. Then, use the arrow keys to navigate to the "Battery Type" option and press the "EXE" button. The battery level will be displayed on the screen as either "GOOD" or "WEAK." If the battery level is weak, it is recommended to replace the LR44 battery to ensure optimal performance of the calculator.