TI Rechargeable Battery (with wire) for Ti-Nspire CX and Ti-Nspire CX CAS Graphing Calculators

Texas Instruments Wired Rechargeable Battery After several years, the battery in your Ti-Nspire CX may not be holding up like it used too. Bring that number cruncher back into shape with a brand new TI Rechargeable Battery for the Ti-Nspire CX and Ti-Nspire CX CAS. It's super simple to replace. We recommend doing so with the help of a parent or guardian. Please note: This battery is not compatible with the Nspire CX II and Nspire CX II CAS. Not sure which battery you need? Read this blog post.