A computing device for determining a revised flight plan as a function of battery temperature in an electric aircraft is disclosed. The computing device includes a battery model that may receive a flight plan and communicate with a machine-learning model, which may be trained as a function of a training set correlating data describing the flight plan to battery temperature labels. The battery model may generate a temperature output using the machine-learning model and determine the revised flight plan using the machine-learning model if the temperature output exceeds a threshold temperature. The computing device may receive the temperature output from the battery model and compare the temperature output to the threshold temperature.