Self-healing charging devices and techniques for identifying and/or troubleshooting causes of performance degradation in user devices are described. A charging device described herein can receive first data from a user device connected to the charging device and analyze the first data to determine diagnostic data associated with the user device. Based at least in part determining the diagnostic data, the charging device described herein can provide an indication via at least one of the charging device or the user device, the indication signifying available actions that can be taken to improve performance of the user device. The charging devices described herein can enable users to easily identify issues causing and/or leading to performance degradation on their user devices and remedy and/or prevent problems that cause the performance degradation while corresponding user devices are charging via the charging devices.