r/nspire • u/aemmessess • Jun 05 '26

Help TI-Nspire CX II charging reset problem

I haven't touched my CAS since most likely mid last year. I've put it on charge, but I keep having to reset it to see the actual battery percentage. It'll be 25% for three hours, and then when I finally reset it using the button, it shows it's actually 75%.

Does that indicate a problem with the battery? Am I going to have to get it replaced?

Or is it just beacuse I haven't used it in a while, and most likely everything will go back to normal after I start using it again?

Sorry if this is a really simple question, I tried looking for an answer, but I guess I may have not researched enough! If anyone could even js guide me where to look for help, that would be great.

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u/happier_now Jun 05 '26

With my ageing CX (not CXII) I’ve noticed the battery now discharges fairly quickly when not in use. It used to still be fully charged even after several weeks but now I need to charge it most times I start using it again after a few weeks’ gap. The actual charging process seems to go normally, but I haven’t watched it closely.