windows powercfg

Windows already includes a diagnostic that can tell you, in clear numbers, whether your laptop battery is merely tired or is approaching the end of its usable life — and it’s just one command away. Background / Overview Laptop batteries are consumable components: their usable capacity declines...

Windows includes a built‑in diagnostic that can tell you, in plain numbers, whether your laptop battery is merely tired or truly failing — and it’s one command away. Background Laptop batteries are consumable parts: they age, their usable capacity falls, and the moment they stop holding charge...