Replacement 3.7L1060SP Battery for TEXAS INSTRUMENTS TI-Nspire CX, TI-Nspire CX CAS Graphing Calculator - Walmart.com
New Battery for Texas Instruments TI Nspire CX,Touchpad,CAS,N2/AC/2L1/A,TI 84 Plus C Silver Edition 3.7V Li Ion 1300mAh|Digital Batteries| - AliExpress
How to Replace the Battery of a TI-Nspire CX - iFixit Repair Guide