Surface battery testing and estimated performance

Surface Laptop (7th Edition) 13.8 Snapdragon® X Plus C10 256GB, 16GB RAM

Up to 20 hours of battery life based on local video playback.

Testing conducted by Microsoft in April 2024 using preproduction software and preproduction Surface Laptop (7th Edition) Snapdragon® X Plus C10 256GB, 16GB RAM device. Testing consisted of full battery discharge during video playback of a .mov file through the Windows Media Player application in 1080p at 24 FPS. All settings were default except screen brightness set to 150 nits with Auto-brightness disabled. Wi-Fi was connected to a network. Tested with Windows 11. Battery life varies significantly with settings, usage, and other factors.

Surface Laptop (7th Edition) Snapdragon® X Elite C12 512GB, 16GB RAM

Up to 22 hours of battery life based on local video playback.

Testing conducted by Microsoft in April 2024 using preproduction software and preproduction Surface Laptop (7th Edition) Snapdragon® X Elite C12 512GB, 16GB RAM device. Testing consisted of full battery discharge during video playback of a .mov file through the Windows Media Player application in 1080p at 24 FPS. All settings were default except screen brightness set to 150 nits with Auto-brightness disabled. Wi-Fi was connected to a network. Tested with Windows 11. Battery life varies significantly with settings, usage, and other factors.

Surface Laptop (7th Edition) 13.8 Snapdragon® X Plus C10 256GB, 16GB RAM

Up to 13 hours of active web usage.

Testing conducted by Microsoft in April 2024 using preproduction software and preproduction Surface Laptop (7th Edition) Snapdragon® X Plus C10 256GB, 16GB RAM device. Testing consisted of full battery discharge while accessing eight popular websites over multiple open tabs through the browser. All settings were default except screen brightness set to 150 nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Tested with Windows 11. Battery life varies significantly with settings, usage, and other factors.

Surface (7th Edition) Snapdragon® X Elite C12 512GB, 16GB RAM device

Up to 15 hours of active web usage.

Testing conducted by Microsoft in April 2024 using preproduction software and preproduction Surface (7th Edition) Snapdragon® X Elite C12 512GB, 16GB RAM device. Testing consisted of full battery discharge while accessing eight popular websites over multiple open tabs through the browser. All settings were default except screen brightness set to 150 nits with Auto-Brightness disabled. Wi-Fi was connected to a network.

Surface Laptop 6 for Business 13.5” Intel^® Core™ Ultra 7 processor 165H 256GB SSD, 16GB RAM

Up to 18.5 hours of battery life based on typical Surface device usage.  

Testing conducted by Microsoft in February 2024 using preproduction Windows 11 software and preproduction Surface Laptop 6 for Business Intel^® Core™ Ultra 7 processor 165H 256GB SSD, 16GB RAM. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. Personalization colors set to Light mode for Windows and apps. All settings were default except screen brightness was set to 150 nits with auto-brightness and adaptive color disabled. Wi-Fi was connected to a network. Tested with Windows 11 Version 22631.3085. Battery life varies significantly with settings, usage, and other factors.

Surface Laptop 6 for Business 15” Intel^® Core™ Ultra 7 processor 165H 512GB SSD, 16GB RAM 

Up to 19 hours of battery life based on typical Surface device usage. 

Testing conducted by Microsoft in February 2024 using preproduction Windows 11 software and preproduction Surface Laptop 6 for Business Intel^® Core™ Ultra 7 processor 165H 512GB SSD, 16GB RAM. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. Personalization colors set to Light mode for Windows and apps. All settings were default except screen brightness was set to 150 nits with auto-brightness and adaptive color disabled. Wi-Fi was connected to a network. Tested with Windows 11 Version 22631.3085. Battery life varies significantly with settings, usage, and other factors.

Surface Laptop 5 13.5” with Intel® Core™ i5, 256GB, 8GB RAM  

Up to 18 hours of battery life based on typical Surface device usage.  

Testing conducted by Microsoft in August 2022 using preproduction software and preproduction 13.5” Intel® Core™ i5, 256GB, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby.  The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness disabled.  Wi-Fi was connected to a network.  Tested with Windows Version 11.0.22621 (21H2).  Battery life varies significantly with settings, usage and other factors.

Surface Laptop 5 15” with Intel® Core™ i7, 256GB, 8GB RAM 

Up to 17 hours of battery life based on typical Surface device usage. 

Testing conducted by Microsoft in August 2022 using preproduction software and preproduction 15” Intel® Core™ i7, 256GB, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby.  The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness disabled.  Wi-Fi was connected to a network.  Tested with Windows Version 11.0.22621 (21H2).  Battery life varies significantly with settings, usage and other factors.

Surface Laptop 4 13.5” AMD Ryzen™ 5 Microsoft Surface ® Edition processor 8 GB RAM  

Up to 19 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in February 2021 using preproduction software and preproduction 13.5” AMD Ryzen™ 5 Microsoft Surface® Edition processor, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Battery life varies significantly with settings, usage, and other factors.  

Surface Laptop 4 15” AMD Ryzen™ 7 Microsoft Surface ® Edition processor 8 GB RAM 

Up to 17.5 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in February 2021 using preproduction software and preproduction 15” AMD Ryzen™ 7 Microsoft Surface® Edition processor, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Battery life varies significantly with settings, usage and other factors.  

Surface Laptop 4 13.5” Intel® Core™ i5 512GB, 8 GB RAM 

Up to 17 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in February 2021 using preproduction software and preproduction 13.5” Intel® Core™ i5, 512GB, 8 GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Battery life varies significantly with settings, usage and other factors.  

Surface Laptop 4 15” Intel® Core™ i7 512GB, 16 GB RAM 

Up to 16.5 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in February 2021 using preproduction software and preproduction 15” Intel® Core™ i7, 512GB, 16 GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Battery life varies significantly with settings, usage and other factors. 

Surface Laptop 3 13.5” Intel® Core™ i5, 256GB, 8 GB RAM

Up to 11.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in September 2019 using preproduction software and preproduction device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Laptop 3 15” Intel® Core™ i7, 512GB, 16 GB RAM

Up to 11.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in September 2019 using preproduction software and preproduction device. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Laptop Go 3 with Intel® Core™ i5-1235U, 256 GB, 8/16 GB RAM

Up to 15.0 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in April-May 2023 using preproduction Windows 11 software and preproduction Surface Laptop Go 3 Intel® Core™ i5-1235U processor, 256 GB, 8/16 GB RAM devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness and Adaptive Color disabled. Wi-Fi was connected to a network. Tested with Windows 11 Version 10.0.22621.1413 (22H2). Battery life varies significantly with settings, usage, and other factors.

Surface Laptop Go 2 with Intel 11th Gen Intel® Core™ i5-1135G7 @ 4.2GHz, 128 GB, 8 GB RAM

Up to 13.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in March 2022 using preproduction Windows 11 software and preproduction Surface Laptop Go 2 11th Gen Intel® Core™ i5 processor, 128 GB, 8 GB RAM Microsoft Surface® Edition devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness disabled. Wi-Fi was connected to a network. Tested with Windows Version 11.0.22000.434 (21H2). Battery life varies significantly with settings, usage, and other factors.

Surface Laptop SE with Intel® Celeron® Processor N4020, Intel® UHD Graphics 600, 64 GB eMMC 4GB DDR4

Up to 16 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in November 2021 using preproduction software and preproduction Gemini Lake refresh N4020 device. Testing consisted of full battery discharge with a mixture of active use and sleep state. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook Web, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness. Wi-Fi was connected to a network. Tested with Windows 11 SE 22000. 

Up to 19.0 hours of battery life based on typical Surface device usage on Surface Laptop Studio 2 with Intel® Core™ i7-13700H Processor, 512GB, 16 GB RAM

Testing conducted by Microsoft in July-August 2023 using preproduction Windows 11 software and preproduction Surface Laptop Studio 2 Intel® Core™ i7-13700H Processor, 512GB, 16GB RAM devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness, Adaptive Color, and Smart Charging disabled. Wi-Fi was connected to a network. Tested with Windows 11 Version 10.0.22621 (22H2). Battery life varies significantly with settings, usage, and other factors.

Up to 18.0 hours of battery life based on typical Surface device usage on Surface Laptop Studio 2 with Intel® Core™ i7-13700H Processor, NVIDIA® GeForce™ RTX 4050 Laptop GPU, 512GB, 16GB RAM

Testing conducted by Microsoft in July-August 2023 using preproduction Windows 11 software and preproduction Surface Laptop Studio 2 Intel® Core™ i7-13700H Processor, NVIDIA® GeForce™ RTX 4050 Laptop GPU, 512GB, 16GB RAM devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness, Adaptive Color, and Smart Charging disabled. Wi-Fi was connected to a network.  Tested with Windows 11 Version 10.0.22621 (22H2).  Battery life varies significantly with settings, usage, and other factors.

Up to 16.0 hours of battery life based on typical Surface device usage on Surface Laptop Studio 2 with Intel® Core™ i7-13700H Processor, NVIDIA® GeForce™ RTX 4060 Laptop GPU, 2TB, 64GB RAM

Testing conducted by Microsoft in July-August 2023 using preproduction Windows 11 software and preproduction Surface Laptop Studio 2 Intel® Core™ i7-13800H Processor, NVIDIA® GeForce™ RTX 4060 Laptop GPU, 2TB, 64GB RAM devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness, Adaptive Color, and Smart Charging disabled. Wi-Fi was connected to a network.  Tested with Windows 11 Version 10.0.22621 (22H2).  Battery life varies significantly with settings, usage, and other factors.

Surface Laptop Studio 14.4” 11th Gen Intel® Core™ i5 256GB SSD, 16 GB RAM

Up to 19 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in August 2021 using preproduction software and preproduction configurations of Surface Laptop Studio. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 
  
Surface Laptop Studio 14.4” 11th Gen Intel® Core™ i7 1TB SSD, 32GB RAM DGPU NVIDIA® GeForce RTX™ 3050 Ti laptop GPU 

Up to 18 hours of battery life based on typical Surface device usage 

Testing conducted by Microsoft in August 2021 using preproduction software and preproduction configurations of Surface Laptop Studio. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Go 4 with Intel® Processor N200, 128GB, 8GB RAM

Up to 12.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in May 2023 using preproduction Windows 11 software and preproduction Surface Go 4 Intel® Processor N200, 128 GB, 8 GB RAM devices. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, OneNote and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150 nits with Auto-Brightness and Adaptive Color disabled. Wi-Fi was connected to a network.  Tested with Windows 11 Version 10.0.22621.1485 (22H2).  Battery life varies significantly with settings, usage, and other factors.

Surface Go 3 with Intel ® Core™ i3-10100Y 128GB, 8GB RAM

Up to 11 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in August 2021 using preproduction software and preproduction Intel ® Core™ i3-10100Y 128GB, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby.  The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled.  Wi-Fi was connected to a network.  Tested with Windows Version 11.0.22000.9 (21H2).  Battery life varies significantly with settings, usage and other factors. 

Surface Go 3 with LTE Advanced with Intel ® Core™ i3-10100Y 128GB, 8GB RAM

Up to 10.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in November 2021 using preproduction software and preproduction Intel ® Core™ i3-10100Y 128GB, 8GB RAM device. Testing consisted of full battery discharge with a mixture of active use and modern standby.  The active use portion consists of (1) a web browsing test accessing eight popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled.  LTE enabled and device connected to LTE Network. Tested with Windows Version 11.0.22000.9 (21H2).  Battery life varies significantly with settings, usage and other factors.    

Surface Go 2 with 8th Gen Intel® Core m3 Processor, 128GB, 8GB RAM

Up to 10 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in February 2020 using preproduction software and preproduction configurations of Surface Go 2. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network.

Surface Go 2 with LTE Advanced with 8th Gen Intel® Core m3 Processor, 128GB, 8GB RAM

Up to 10 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in February 2020 using preproduction software and preproduction configurations of Surface Go 2. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Go with Intel® Pentium® Gold Processor 4415Y, 128GB, 8GB RAM

Up to 9 hours of battery life for local video playback

Testing conducted by Microsoft in June 2018 using preproduction device. Testing consisted of full battery discharge during video playback. All settings were default except: Wi-Fi was associated with a network and Auto-Brightness disabled. 

Surface Go with LTE Advanced with Intel® Pentium® Gold 4415Y Processor, 128GB, 8GB RAM

Up to 8.5 hours of battery life for local video playback

Testing conducted by Microsoft in October 2018 using preproduction device. Testing consisted of full battery discharge during video playback. All settings were default except: LTE enabled and device connected to LTE Network. Wi-Fi and Bluetooth in airplane mode and Auto-Brightness disabled.

Surface Book 3 13.5” Intel® Core™ i5, 256GB, 8 GB RAM

Up to 15.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in April 2020 using preproduction software and preproduction configurations of Surface Book 3. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Book 3 15” Intel® Core™ i7, 256GB, 16 GB RAM connected to keyboard base

Up to  17.5 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in April 2020 using preproduction software and preproduction configurations of Surface Book 3. Testing consisted of full battery discharge with a mixture of active use and modern standby. The active use portion consists of (1) a web browsing test accessing popular websites over multiple open tabs, (2) a productivity test utilizing Microsoft Word, PowerPoint, Excel, and Outlook, and (3) a portion of time with the device in use with idle applications. All settings were default except screen brightness was set to 150nits with Auto-Brightness disabled. Wi-Fi was connected to a network. 

Surface Book 2 13.5” Intel® Core™ i5, 256GB, 8 GB RAM

Up to 17 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in October 2017 using preproduction device. Testing consisted of full battery discharge during video playback. All settings were default except: Wi-Fi was associated with a network and Auto-Brightness disabled. 

Surface Book 2 15" Intel® Core™ i7, 512GB, 16 GB RAM dGPU 

Up to 17 hours of battery life based on typical Surface device usage

Testing conducted by Microsoft in October 2017 using device. Testing consisted of full battery discharge during video playback. All settings were default except: Wi-Fi was associated with a network and Auto-Brightness disabled. 

Up to 15.5 hours of local video playback

Up to 28 hours of talk time 

Surface Duo 2 has all-day battery life

Local video playback: Testing conducted by Microsoft in September 2021 using preproduction Surface Duo 2 units and software. Testing consisted of full battery discharge during local video playback on a single screen. Video playback consisted of a repeated 30-minute .mp4 file in 1080p at 24 fps. Device was connected to a cellular network and Wi-Fi was associated with a network. All settings were default except: Wi-Fi ‘ask to join’ and Adaptive Brightness were disabled, and screen was set to 100 nits. Battery life varies significantly with network and feature configuration, signal strength, settings, usage, and other factors. Battery has limited recharge cycles and cannot be replaced. 

Talk time: Testing conducted by Microsoft in September 2021 using preproduction Surface Duo 2 units and software. All settings were default, and device was connected to a cellular network and Wi-Fi was enabled but not connected. Battery life varies significantly with network and feature configuration, signal strength, settings, usage and other factors. Battery has limited recharge cycles and cannot be replaced.     

Surface Duo 2 has all-day battery life:   Testing conducted by Microsoft in September 2021 using preproduction Surface Duo 2 units and software over Wi-Fi with cellular associated to a network. Testing consisted of full battery discharge during active use scenarios and a power drain measurement in Suspend. The active use scenarios excluded cell calls and included both single screen and dual screen scenarios, consisting of (1) a web browsing test accessing 8 popular websites over multiple open tabs, (2) productivity tests utilizing Microsoft Teams audio and video calls and Microsoft Word, PowerPoint, Excel and Outlook, (3) sending and receiving SMS text messages, and (4) streaming a video through the YouTube app. All settings were default except Adaptive Brightness was disabled, and screen was set to 150nits. Battery life varies significantly with network and feature configuration, signal strength, settings, usage and other factors. Battery has limited recharge cycles and cannot be replaced. 

Up to 15.5 hours of local video playback
Up to 10 days of standby time
Up to 27 hours of talk time 

Local video playback: Testing conducted by Microsoft in July 2020 using preproduction Surface Duo units and software. Testing consisted of full battery discharge during local video playback on a single screen. Video playback consisted of a repeated 30-minute .mp4 file in 1080p at 24 fps. All settings were default except: LTE and Wi-Fi were both associated with a network with ‘ask to join’ disabled and Adaptive Brightness was disabled, screen was set to 100 nits. Battery has limited recharge cycles.

Standby time: Testing conducted by Microsoft in July 2020 in an AT&T Validated Lab using preproduction Surface Duo units and software. Testing conducted in accordance with AT&T requirements and test specifications.  All settings were default, and network settings were: connected to LTE, and Wi-Fi was enabled but not connected. Battery has limited recharge cycles.

Talk time:  Testing conducted by Microsoft in July 2020 in an AT&T Validated Lab using preproduction Surface Duo units and software. Testing conducted in accordance with AT&T requirements and test specifications. All settings were default, and network settings were: connected to LTE, and Wi-Fi was enabled but not connected. Battery has limited recharge cycles.

Up to 15.5 hours of local video playback
Up to 10 days of standby time
Up to 27 hours of talk time 

Local video playback: Testing conducted by Microsoft in July 2020 using preproduction Surface Duo units and software. Testing consisted of full battery discharge during local video playback on a single screen. Video playback consisted of a repeated 30-minute .mp4 file in 1080p at 24 fps. All settings were default except: LTE and Wi-Fi were both associated with a network with ‘ask to join’ disabled and Adaptive Brightness was disabled; screen was set to 100 nits. Battery has limited recharge cycles.

Standby time: Testing conducted by Microsoft in November 2020 in a third-party lab using preproduction Surface Duo units and software. All settings were default, and network settings were connected to LTE, and Wi-Fi was enabled but not connected. Battery has limited recharge cycles.

Talk time: Testing conducted by Microsoft in November 2020 in a third-party lab using preproduction Surface Duo units and software. All settings were default, and network settings were connected to LTE, and Wi-Fi was enabled but not connected. Battery has limited recharge cycles.

Up to 41 hours of continuous typing while detached.

Testing conducted by Microsoft in April 2024, using preproduction compatible Windows 11 devices and software, under controlled conditions. Testing consisted of full battery discharge with continuous typing while keyboard is detached from the device. All settings were default including backlight off and no pen in tray. Battery life varies significantly with settings, usage, and other factors.

Up to 15 hours of typical usage.

Testing conducted by Microsoft in August 2021 using preproduction Surface Slim Pen 2 and Surface Pro 8 units and software using automated equipment. Testing consisted of Surface Slim Pen 2 directly in contact with the screen and consisted of inking and hovering with default settings. Battery life varies significantly with settings, usage and other factors.