...eypad and please ensure that the reset button located on the back is not stuck down below the bottom case. If it appears stuck, use a paper clip to move it back into position. It is very important to not use an object that can leave behind debris, such as a pencil.
If the TI-Nspire CX or TI-Nspi... https://education.ti.com/en/customer-support/knowledge-base/ti-nspire-family/troubleshooting-messages-unexpected-results/37275
...
Knowledge Base Knowledge Base Search How can I best care for my TI Rechargeable Battery? Lithium-ion batteries have a limited life which is defined by several factors: environment, storage, the number of charge/discharge cycles, and level of discharge/charge. ... https://education.ti.com/en/customer-support/knowledge-base/ti-83-84-plus-family/general-information/33711
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