A laptop battery that will not charge is often caused by the power source, charger, charging port, or a battery-protection setting—not necessarily a failed battery. Start with the simple checks below before replacing anything or changing advanced settings.


Laptop showing a low battery warning with its charger connected on a home office desk
Check the power source, charger, and charging port before changing laptop settings.


Start with the power and charger



  1. Check the wall outlet and power strip. Plug a lamp or phone charger into the same outlet to make sure it has power. If the laptop is connected through a surge protector or power strip, test a known-good wall outlet instead.

  2. Reconnect the charger at both ends. Unplug the power adapter from the wall and laptop, then reconnect it firmly. Look for a loose connector, bent pin, frayed cable, damaged brick, or debris in the charging port. Do not use a damaged charger or force a connector into place.

  3. Use the charger designed for the laptop. A lower-wattage USB-C charger may keep a laptop running while charging very slowly—or may not charge it at all under load. Use the original charger and cable when possible, and confirm you are using the USB-C port that supports charging.

  4. Let an overheated laptop cool down. Charging can pause when a battery or charging circuit is too warm. Shut the laptop down, place it on a hard surface with clear ventilation, and let it cool before trying again.

    5. If you need a replacement after confirming the exact model and power requirements, compare compatible laptop chargers
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For a related troubleshooting path, see Computer Won’t Turn On? 9 Safe Checks to Try First.


Check what Windows is telling you



  1. Read the battery status message. Select the battery icon in the taskbar. “Plugged in, charging slowly” usually points to a charger, cable, or port that does not provide enough power. If the battery stops below 100%, check whether the manufacturer’s smart-charging or battery-health feature is intentionally limiting the charge.

  2. Restart before changing drivers. Save your work, restart Windows, and connect the charger again after the desktop loads. A restart can restore communication between Windows, the battery controller, and the power adapter.

  3. Refresh the battery device in Device Manager. Right-click Start and open Device Manager, then expand Batteries. Right-click Microsoft ACPI-Compliant Control Method Battery, choose Uninstall device, and restart the laptop so Windows can detect it again. Do not remove unrelated devices.



Know when it needs service



  1. Stop if the battery looks unsafe. Turn the laptop off and unplug it if the case is bulging, the trackpad is lifting, the battery area is unusually hot, or you smell burning. Do not press, puncture, or try to remove a swollen battery yourself; arrange service through the laptop manufacturer or a qualified repair professional.


If the laptop only works while plugged in, the battery may have lost much of its original capacity. Windows can generate a battery report that shows installed-battery information, recent usage, and capacity estimates; use it as a clue, then compare the result with your laptop maker’s support guidance.


Know when charging is a battery issueA battery that is not charging can look similar to a laptop that will not turn on, but the indicators matter. Check whether the charging light changes when you reconnect the original charger and whether the device runs from wall power. Avoid forcing a connector or using a damaged cable. A swollen battery, hot charger, damaged port, or burning smell is a stop signal; do not continue charging or attempt to open the battery compartment.

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Laptop battery not charging: quick answers


Why is my laptop plugged in but not charging?


The most common causes are an underpowered or damaged charger, a loose connection, the wrong USB-C port, overheating, a battery-health limit, or a battery that is wearing out. Testing the original charger directly in a wall outlet is the fastest first check.


Why does my laptop stop charging at 80%?


Some manufacturers use smart-charging features to hold the battery below 100% and reduce long-term wear. Check the manufacturer’s battery or power app before assuming the battery has failed.


Is it safe to keep using a laptop with a swollen battery?


No. Stop using and charging the laptop, avoid pressing on the case, and arrange professional service. A swollen lithium-ion battery can be a safety risk.


Helpful Microsoft resources



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