The TI-Nspire CX series differ from all previous TI graphing calculator models in that the CX series are the first to use a rechargeable 1,060 mAh Lithium-Ion battery (upgraded to 1,200 mAh in the 2013 revision). The device is charged via a USB cable.
The TI-Nspire CX series deviates from all previous TI graphing calculators by being the first to feature a rechargeable 1,060 mAh Lithium-Ion battery (upgraded to 1,200 mAh in the 2013 revision). It is charged using a USB cable.