Enable "Battery Limit" for Surface devices plugged in for extended periods

Assume that your Surface device must be plugged in for extended periods of time. For example, you are using a Surface Kiosk. In this scenario, it is important to adjust the battery charging for optimal performance.  

To support Kiosk scenarios, the Surface firmware is updated to add a Kiosk mode. This mode allows configuration of battery limits through a Battery Limit setting.

Support for Battery Limit is in the Unified Extensible Firmware Interface (UEFI) settings. You can enable Battery Limit through UEFI or through Microsoft Surface Enterprise Management Mode (SEMM).

The following bullets list the devices and firmware versions (some with needed updates) that support this feature: 

• Surface Pro 3 - September 10, 2018 update. Surface Embedded Controller firmware version 38.14.80.0 and later versions.
• Surface 3 - December 6th, 2018 update. Surface UEFI firmware version 1.51116.218.0 and later versions.
• Surface Pro 4 - September 10, 2018 update. Surface Embedded Controller firmware version 103.2241.256.0 and later versions.
• Surface Book - October 10, 2018 update. Surface Embedded controller firmware version 90.2226.256.0 and later versions.
  Note This feature currently only applies  to the battery in the detachable clipboard.
• Surface Laptop (1st gen) - January 24, 2019 update. Surface System Aggregator firmware version 145.106.139.09 and later versions.
• Surface Pro (5th gen) and Surface Pro with Advanced LTE Model 1807 - August 1, 2019 update. Surface System Aggregator firmware version 239.2660.257.0 and later versions.
• Surface Book 2 - July 9, 2020 update. Surface System Aggregator firmware version 182.2107.139.0 and later versions will apply Battery Limit Mode on the battery in the keyboard base, in addition to the detachable clipboard.
• Surface Go - November 9, 2018 update. Surface UEFI firmware Version 1.0.10.0 and later versions.
• Surface Pro 6 - August 1, 2019 update. Surface System Aggregator firmware version 239.3101.139.0 and later versions.
• Surface Laptop 2 - January 24, 2019 update. Surface System Aggregator firmware version 145.106.1339.0 and later versions.
• Surface Go with LTE Advanced - July 23, 2019 update. Surface UEFI firmware version 1.1.12.0 and later versions.

For more information, see Caring for your Surface battery and Battery Limit settings.