A method and a related terminal for displaying battery power to improve accuracy of displaying battery power. The method includes acquiring a power increase of a battery according to a preset time interval when the battery enters a charging state, where the battery has completed discharging before entering the charging state, acquiring power stored in the battery and an open circuit voltage OCV of the battery at a time when the acquired power increase of the battery reaches a preset threshold, generating an Open Circuit Voltage-State Of Capacity (OCV-SOC) curve according to the acquired power stored in the battery and the acquired OCV when the battery completes charging, and displaying the battery power according to the generated OCV-SOC curve.