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My ti-84 ce plus has been glitching up lately, first it was abad battery, but now it has the same symptom still, i think something may have corrupted, the battery life indicator in the top right corner won’t drain

It sounds like the battery is on it’s last legs. The TI-84 series is the high school calculator, and as such many of them end up neglected and sold at a discount to anyone willing to deal with the issues they have since acquired. This is a particularly known issue on used ones. I would change the battery out and rule out that issue since it’s so cheap. TI sells the battery and charger here. If you just need the battery, this is the battery you want. The part number is 3.7L1200SPA