Battery 1 on Surface Book 3 is the tablet (clipboard) battery; Battery 2 is in the keyboard base. From the described behavior:
- Battery 2 (base) charges normally.
- Battery 1 (tablet) only charges when undocked and only with the Surface Connect cable in one orientation.
This points to a hardware issue either with the Surface Connect port on the tablet side or with the keyboard/base connection, not a software or driver problem.
Steps supported by the provided guidance:
- Check basics and connector orientation
- Ensure the Surface power supply meets the Surface charging requirements.
- Plug the Surface Connect connector in both directions and confirm the LED is solid white. If it only charges in one direction, that reinforces a physical connection issue.
- Inspect and clean the connector: unplug from the wall, then clean the pins on the long, narrow part of the charger with a pencil eraser and rubbing alcohol as described under Clean the connector on your power supply.
- Check the battery icon status and drivers (while docked and undocked)
- While connected as a tablet and while docked to the keyboard, check the battery icon in the taskbar for messages such as:
- “Plugged in, not charging”
- “Battery not detected”
- If the icon shows “Plugged in, not charging” or similar for Battery 1, and this is not an Arm-based Surface, follow Solution 3: Remove the battery driver and install updates:
- Plug in Surface.
- Open Device Manager → expand Batteries.
- Uninstall Microsoft Surface ACPI-Compliant Control Method Battery or Surface Battery.
- Use Action → Scan for hardware changes.
- Restart (Start → Power → Restart).
- Also use the Surface app → Help & support → Check for updates to ensure firmware and drivers are current.
- While connected as a tablet and while docked to the keyboard, check the battery icon in the taskbar for messages such as:
- Force a restart
- Shut down (Start → Power → Shut down), then press and hold the power button for 20 seconds until the logo appears again, as described under Force a restart. This can clear firmware/EC glitches affecting charging logic.
- If the issue persists, treat it as a hardware/service case
Because Battery 1 only charges in one connector orientation and not when docked, and Battery 2 works, this strongly indicates:- Wear/damage or poor contact on the Surface Connect port on the tablet, or
- A fault in the tablet–keyboard connection path for power.
- Use How to get service or repair for Surface or the device page under If your Surface still won't charge, submit a service order to arrange inspection/repair.
- If this is a business-owned device, follow Surface service options for Business and Education.
Given the symptoms and after performing the supported software and cleaning steps, ongoing inability for Battery 1 to charge when docked or in both orientations should be handled as a hardware repair scenario.
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