Safer and more reliable operation of power transmission equipment is improved; an electric power department introduces an intelligent lock into safety management and control of an electric power field. However, a rechargeable battery of an existing intelligent key cannot clearly display the charging state of the intelligent key and cannot cut off the power of the fully charged intelligent key to prevent overcharging. The utility model discloses an intelligent key charging management device. technologies such as wireless communication, clock management, bidirectional current/power monitoring, single-chip microcomputer control, liquid crystal display and resistive touch screen control are integrated; the intelligent charger has the functions of controlling on-off of a charging power supply,detecting charging voltage and current values in the charging process, judging the charging process and the electric quantity of a battery, setting charging countdown, automatically powering off aftercharging is finished, reminding charging finishing and the like. The charging process of the intelligent key can be effectively controlled, the charging safety of the intelligent key is ensured, theservice life of the intelligent key is prolonged, the attention of workers in the charging process of the intelligent key is reduced, and the working efficiency of the workers is improved.