Microsoft confirms that the Arm and Intel versions of the Surface Pro 9 will indeed have the same size battery, with a design capacity of 47,700 mWh, so it's reasonable to expect the Arm-powered device to achieve dramatically better real-world battery life. Review: Surface Pro 8 with LTE: Still in love That would translate to nearly 10 hours of actual, real-world battery life compared to 6 hours for the x86 design. If the Surface Pro X had the same battery as the Pro 8, it's reasonable to expect that battery life would go up by 31.5% (the difference in battery capacity). If you see inaccuracies in our content, please report the mistake via this form. If we have made an error or published misleading information, we will correct or clarify the article. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. ZDNET's editorial team writes on behalf of you, our reader.

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