![]() If not, you'll probably just have to buy one. Try 1-800-TI-CARES to see if they'll replace the battery under warranty first. Try letting it charge overnight if the problem persists, you'll probably want to get a replacement battery from TI. You can graph different points in different colors. Some TI-84 Plus C Silver Editions have faulty batteries and/or battery management ICs. ![]() Yep, it is a TI-84 Plus C Silver Edition and it does have a color screen. If they were simple TI-BASIC math programs, then they should work equally well on the TI-84 Plus monochrome and color calculators. I think you mean TI-84 Plus C Silver Edition if there was a TI-89 Color, we would all be rather excited. And please bare with me I am new and am not yet familiar with your forum etiquette Understandable, you'll learn about double-posting and bumping and all that good stuff. I know the calculator in the learning center is still working but maybe there was a conflict between the TI-84 normal programs and my TI 89 color. This may also be helpful to swap batteries from time to time as well. If your battery is holding a reduced charge or your calculator is having issues that may be related to the battery, you can replace it using this guide. It is designed to last 'Up to one month' with standard use. I downloaded the programs from a Ti-84 in the learning center at my school. The TI-84 Plus CE features a replaceable 1200 mAh battery. And on a side note, that may have caused the problem. ![]() I'm going to assume that the programs I put into the calculator after purchasing it are gone.
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