At some point, you’ve felt the twinge of anxiety as your laptop’s battery slowly winds down, out of range of a power outlet. Microsoft is testing a new technology to give you a bit more juice — both when you need it and when you think you don’t. Last week, Microsoft debuted a new “self healing” PC technology as part of its Windows 11 Release Preview Channel. That technology also is available to test within the far more experimental Canary Channel, which...
