Laptop Says "Plugged In, Not Charging" in Windows? Here's What It Means and How to Fix It
Your Windows laptop is plugged in, but the battery sits below 100% and the icon says “plugged in, not charging” (or hovering over it says “Fully smart charged”).
Why: in many cases this is Smart charging working exactly as designed — Windows deliberately holds the battery below 100% to slow long-term wear. A genuine charging fault is also possible, but rule out the intentional behavior first.
Fix 1: Check whether it’s Smart charging (a heart on the battery icon)
Hover over the battery icon in the taskbar. If it says “Fully smart charged,” or you see a heart on the battery icon, this is intentional. As Microsoft explains, “Your device may not charge to 100%, which helps keep your battery healthier in the long run.”
- Open Settings > System > Power & battery and look at the battery section for a Smart charging note or heart icon.
- Because each manufacturer implements Smart charging differently, Microsoft directs you to your device manufacturer’s website to turn it off if you genuinely need a full charge (for example, before travel away from outlets).
There is nothing to repair here — the battery is being protected.
Fix 2: Keep the battery in a healthy range instead of forcing 100%
Microsoft’s own battery-care guidance is that constantly topping a laptop to 100% and leaving it plugged in is worse for the battery, not better:
- Try to keep the battery level between 20% and 80% several times a week.
- Avoid using or charging the laptop at high temperatures — heat permanently reduces lithium-ion capacity.
So a battery that stops a little short of 100% on a healthy machine is doing the right thing.
Fix 3: Confirm the battery’s real health with a report
To separate “intentional limit” from “worn-out battery,” generate a battery report. In admin Command Prompt or PowerShell:
powercfg /batteryreport /output "%USERPROFILE%\battery-report.html"Open the HTML file and compare Design Capacity to Full Charge Capacity. If Full Charge Capacity has dropped far below Design Capacity, the battery is genuinely degraded — and short charge times or a battery that won’t hold charge point to replacement, not a software fix. (Microsoft notes severely deteriorated batteries may visibly swell; if a battery has expanded, stop using the device immediately.)
FAQ
Why does my laptop stop charging at 80%? Almost always Smart charging or a manufacturer “battery limit” / “conservation mode” setting. It is intentional protection, not a fault.
Should I turn Smart charging off? Only if you regularly need the full battery away from power. For day-to-day desk use, leaving it on extends battery lifespan.
The battery genuinely isn’t charging at all (stuck at one number). That’s different from “smart charged.” Check the charger and cable, then see Fix 3 — a Full Charge Capacity collapse means a worn battery.
Sources: Microsoft Support — Use Smart charging in Windows, Microsoft Support — Caring for your battery in Windows