Laptop Battery Health After a Year of Windows 11 Updates: How to Check It
Quick answer: Battery wear is normal, and by the one-year mark shorter run-times usually reflect capacity loss rather than a Windows bug. Check your true battery health with a built-in report — on Windows the powercfg battery report, on macOS Tahoe the Battery Health panel. Watch how yours discharges in real use with the battery test.
Windows 11: the powercfg report
Windows doesn't show battery health in Settings, but it generates a detailed report. Open Command Prompt or Terminal, type powercfg /batteryreport, and press Enter — Windows saves an HTML file and tells you where. Open it and compare Full Charge Capacity to Design Capacity; dividing one by the other gives your health percentage, and the report's capacity-history section shows how fast it is degrading.
macOS Tahoe: the Battery Health panel
On macOS Tahoe 26, go to System Settings, Battery, and click the information icon next to Battery Health to see the status and maximum capacity. The cycle count lives in System Information under Power, and Optimized Battery Charging learns your routine to hold the charge below full until you need it, slowing wear.
When to replace, and how to slow wear
As a rough guide, once health drops to around 80% or run-times become frustrating, a replacement is worth considering — and significant capacity loss within warranty may be a valid claim. To prolong life, avoid the extremes: regularly hitting 0% or sitting at 100% for long periods both add wear, so keeping it roughly between 20% and 80% is gentler, and heat is a battery's enemy.
See it in action
The battery test lets you watch your battery's real-world discharge behavior, and our full guide on how to check laptop battery health explains cycle counts and capacity in plain terms.