How to Replace the Battery of a TI-Nspire CX - iFixit Repair Guide
TI Nspire CX II CAS Student Software:University of Florida
TI Nspire CX CAS (Black) & CX CAS II (Blue) Battery Size Comparison. 1060mAh, larger, and heavier vs. 1,200mAh, smaller, and lighter. Battery tech has advanced. : r/calculators