If your Eufy doorbell is not charging, there could be a few reasons behind this issue. - First, check if the charging cable is properly connected to both the doorbell unit and the power source. - Ensure that the cable is not damaged or frayed. Also, verify that the power source is providing electricity by plugging in another device. - If the cable and power source are functioning correctly, try cleaning the charging port on the doorbell with a soft, dry cloth to remove any dirt or debris that may be obstructing the connection. If the problem persists, it is advisable to contact Eufy's customer support for further assistance.