# ET Book 10 12450H - Low USB delivery voltage

**URL:** <https://forum.chuwi.com/t/et-book-10-12450h-low-usb-delivery-voltage/56249>\
**Category:** CoreBook X\
**Created:** [August 25, 2026, 6:41pm UTC](https://forum.chuwi.com/t/et-book-10-12450h-low-usb-delivery-voltage/56249 "2026-08-25T18:41:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Stratospheric](https://avatars.discourse-cdn.com/v4/letter/s/f4b2a3/32.png) [@Stratospheric](https://forum.chuwi.com/u/Stratospheric)\
**Post date:** [August 25, 2026, 6:41pm UTC](https://forum.chuwi.com/t/et-book-10-12450h-low-usb-delivery-voltage/56249/1 "2026-08-25T18:41:03Z")

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Does anybody know how to increase the voltage being delivered by the USB on this thing?

I simply can’t charge my phone with its little battery, it is merely able to keep it from discharging but it can’t charge a simple phone, how come?