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Battery status in laptop how to#
Battery status in laptop Patch#
Battery status in laptop pro#
Battery status in laptop software#
Battery status in laptop windows#

Testing conducted by Microsoft in April 2020 using preproduction software and preproduction configurations of Surface Book 3. Up to 15.5 hours of battery life based on typical Surface device usage

Surface Book 3 13.5” Intel® Core™ i5, 256GB, 8 GB RAM See below for more details about test parameters and estimated battery performance by product.

Battery status in laptop how to#

The following articles provide more info about battery life along with tips about how to make your battery last longer: Details for the testing can be found below by Surface device. We currently use battery life test models that reflect activities typical to a Surface user. For some of our older devices, we used a local video playback battery life test. For more information on battery care, see Caring for your Surface battery. Like all batteries, lithium-ion cells are consumables that age and deteriorate over time and with usage. The actual amount of battery life you experience can vary significantly and depends on which Surface device you have, how you use it, network and feature configuration, signal strength, and settings and other factors. In addition, users of Surface devices with lithium-ion batteries will also experience changes in battery life over time. For some products, testing is also conducted according to carrier specifications. Once you've finally gotten your DSDT patched and battery working in macOS, it's time to finally create our very own hot-patches.We test Surface devices so we can provide you with an estimate of how much battery life you might expect from your Surface device. Note 2: Avoid using the MaciASL and iASL provided by Rehabman, they have been long neglected and so highly recommended grabbing a newer variant from Acidanthera: MaciASL (opens new window) And also remember that the patched DSDT would also go into EFI/OC/ACPI Note: When re-injecting your DSDT, it should be the first in the list of ACPI -> Add in the ist.

Battery status in laptop Patch#

Rehabman's how to patch DSDT for working battery status (opens new window)

Battery status in laptop windows#

While custom DSDT injection should be avoided as to prevent issues with Windows and firmware updates, it can be quite helpful as a starting point since it's a bit easier to grasp and do yourself:

Note: Rehabman's guides say to use ACPIBatteryManager, you must use SMCBatteryManager instead.

Refer to the VirtualSMC documentation for information on how to implement these methods: Link (opens new window) Legacy Patching Resources Thus, SMCBatteryManager supports two ACPI methods, CBIS and CBSS to provide this information to macOS. manufacture date and battery temperature) in their EC fields, the traditional _BIF, _BIX, and _BST ACPI methods do not support providing this information. # Battery Information SupplementĪlthough many laptops supply supplemental battery information (e.g. The documentation may also prove useful for those implementing cycle count for the first time rather than transitioning from the ACPIBatteryManager cycle count hack. Refer to the VirtualSMC documentation for information on how to transition from the ACPIBatteryManager cycle count hack to a proper _BIX method implementation: Link (opens new window) In the past, Rehabman's ACPIBatteryManager employed a hack to support cycle counts on firmwares which do not have a _BIX method, however with SMCBatteryManager this is no longer supported. However, their firmwares either do not implement or expose it within the _BIX method. Some laptop vendors, such as HP, already supply cycle count information. Refer to the VirtualSMC documentation for information on how to handle dual-battery laptops: Link (opens new window) # Cycle Count B1B2, B1B4, RE1B, and RECB).īecause macOS does not properly support systems with dual batteries, you have to merge the two batteries in ACPI. This means that you can use the field names in your DSDT directly instead of through utility methods (e.g.

Note: If you are using the ECEnabler kext, you do not need to split EC fields as shown in the guides below.

Battery status in laptop pro#

If battery status is not working even with ECEnabler, make sure you have the SMCBatteryManager (opens new window) VirtualSMC plugin enabled in your OpenCore configuration.Ĭertain devices, such as the Surface 3, Surface Pro 5, Surface Book 2, and Surface Laptop (and all subsequent Surface devices), use proprietary Embedded Controllers (or other similar hardware) instead of standard ACPI battery devices and OperationRegion fields, and thus without device-specific kexts, battery status cannot work. cycle count, or temperature/other supplemental data) or have dual batteries, you still will need to create ACPI patches - see the resources below. If you would like battery functionality beyond charge percentage (e.g. With ECEnabler.kext (opens new window), ACPI patching is no longer required for working battery percentage.