surface book 1835 keyboard won't charge

Microsoft does not list the Surface Book (model 1835) keyboard/base battery as a separate customer-replaceable part in the provided material. When the battery or power components in a Surface device or its power accessories no longer work, the documented path is to use Microsoft’s service and repair process rather than buying an internal battery or keyboard/base assembly directly.

For a Surface Book with an inoperative keyboard/base battery, the supported options are:

1. Use Microsoft’s device service and repair:
   • Go to Microsoft account | Select device for service.
   • Select the Surface Book, then follow the steps to create a service request. Depending on warranty and region, this may result in a repair or replacement offer.
2. If the issue is with the external power supply/charger rather than the keyboard/base itself:
   • If troubleshooting does not fix the charger, replace the power supply via the same device service page or by purchasing a genuine Surface power supply from the Microsoft Store or authorized retailers, as described in the power-supply guidance.

If the Surface Book is owned by an organization, Surface service should be arranged through the business/education service options referenced in the documentation.

References:

• Surface battery won’t charge or Surface won’t run on battery
• What to do if your Surface power supply or charger doesn’t work
• Surface Book help & learning