Hello, thanks for your question. We are sorry to hear you are experiencing this issue. The Smart Clock USB follows an international general output agreement, 2.5W (5V-500mA). We recommend plugging in the unit overnight to see if it is charging or trying some other device to see if it charges. If the USB is not charging your devices at all please don't hesitate to reach out to Lenovo Tech Support at 866-426-0911 for the next steps in resolving your issue.
4 years, 11 months ago
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