# Charging your DAU Before starting a recording session, verify that your DAU is fully charged. To charge the DAU, connect it to supplied USB-C cable and plug it into a 5V DC power supply. While charging, the DAU’s charging LED light will turn orange and switch to green when it is fully charged. The battery takes up to 2 hours to charge and provides up to 8-12 hours of recording (depending on the used montage). --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://emotiv.gitbook.io/x-trodes-user-manual/device-maintenance/charging-your-dau.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.