TheLastMillennial

Does the battery you have look like the battery in this guide or does yours have a wire connected to it? The metal pads on the battery will go to the top right corner.

The metal prongs on the calculator's body are springy which is why the battery doesn't just fall into place. Do any of the prongs look different from the others (is one bent out of shape)? If not, you can just push the battery into place; you shouldn't have to force it in.

@vanmeterb The TI-84 Plus CE only has 1 rechargeable battery. Look at the text at top of your calculator above the screen and let me know exactly what it says. Knowing what calculator you have will help me understand what’s going on.

Thanks, I’ve updated the guide with that link.

I’ve replied to your question here: TI-84 Plus CE - ON Button Not Working To Turn On or Off

That’s interesting, does your computer recognize it when you plug the calculator in?

Just so you know, the charging circuit is separate from the rest of the calculator so it can still work even if the calculator doesn’t.

So you're saying when you try charge the calculator it doesn't charge the battery at all? Does the LED next to the charging port turn solid orange when you plug it in? Have you tried a different power source (i.e. your computer or a wall block) or a different cable?

@tfc_cnc Hi, first off I really appreciate all the information you provided, it makes this a lot easier to diagnose! Unfortunately if reinstalling the OS (step 4) does not work, then there’s nothing more you can try on the software side. However, If the battery indicator never turns green even after charging overnight then there may be a defect with the battery itself. Try replacing the battery; if that doesn’t work then I think you’ll need to contact TI Cares. I have no idea why some calculator just die for no reason. Please let me know if you get it working again!

You can’t buy replacement parts for either one without finding a donor calculator somewhere. If it’s just the screen protector that’s damaged then you can just pull it off since it’s only held on by weak glue. If your LCD is cracked then you’ll need to find another TI 84 Plus CE and swap the LCDs. Fortunately all displays are compatible with all hardware revisions so it doesn’t matter which one you get (just make sure you do NOT get a TI 84 Plus CSE since it does NOT have the same LCD).

@Infine Axel, I think this is the exact question topic you’re looking for: Why my charging light is always on? It kills the battery..

Oh no! What do you mean by “ when I pulled the screws, the screws came off the cover, like they are completely jammed”? Are you saying the screws on the battery compartment fell out? If so, that’s not normal. They should stay on the battery compartment.

Do you have any idea why your calculator could have suddenly died like this? How long have you had it? It’s possible it could just be defective.

I know you said it wouldn’t turn on, but perhaps you could try connecting your calculator to power then trying TI-84 Plus CE Recovery Techniques. ?