If your TI-84 CE graphing calculator is low on battery and about to die, have no fear! To charge your graphing calculator, simply use the charging cable provided to you when you purchased the TI-84 CE. One end goes into the side of the graphing calculator and the other end goes into an electric wall outlet.
The battery will last up to two weeks per charge under normal use.
To charge a TI-84 CE from 0% to 100% will take 1-2 hours.