For students, the TI Rechargeable Battery is expected to last up to two weeks of normal use on a single charge. The TI-84 Plus CE graphing calculator comes with a TI Rechargeable Battery. When the cursor is on any spinner menu, the context help in the status bar frequently displays the hint: PRESS TO SELECT AN OPTION. With the cursor on a color selection for a feature, use the | or ~ to change the color. How do I change the color on my TI-84 Plus?Ĭolor options for various features are accessed via a spinner menu. Use the USB cable or the TI Power Adapter (included) to power up the handheld. For classroom use, the TI Rechargeable Battery is expected to last up to five days of normal use on a single charge. You may need to adjust the contrast again after doing this. After five minutes, reinsert all of the batteries and turn the calculator on. Troubleshooting: Calculators Screen Is Black ➢ Remove all of the batteries including the round lithium battery for five minutes.