Solution 36921: TI-84 Plus CE when at low battery may display an Xmit error.
Why does the TI-84 Plus CE when at low battery display an Xmit error?
In certain low battery conditions (technically below the <5% threshold of remaining battery), if a user attempts to perform a unit to unit communication the communication/transaction may not complete.
When encountering a low battery situation, the system notifies the user that they should recharge their battery. In low battery conditions, functions may cease to work properly in these cases therefore it is highly recommended to charge the Graphing Calculator’s to a proper battery level.