How to fix an Acer laptop battery that's not charging

⚡ Fast fix

• Start with the charger. A faulty charger is often the real problem, not the battery.
• No charging light? Try a compatible charger before assuming your laptop needs repair.
• Battery stuck at the same percentage? A BIOS or power management issue may be preventing it from charging.
• Swelling or excessive heat? Stop using the laptop immediately and have the battery checked.

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An Acer® laptop that won't charge has a way of showing up at the worst possible time. You plug it in expecting the battery to climb, but it stays stuck at the same percentage—or worse, keeps dropping.

It can be hard to tell whether the problem is the charger, the battery, or something deeper inside the laptop. Asurion Experts troubleshoot charging issues like these every day, and a few simple checks can usually narrow it down. Here's how we'd figure out what's keeping your Acer laptop from charging and what you can do next.

Why isn't my Acer laptop battery charging?

When an Acer laptop stops charging, it's usually due to 1 of 3 things: power delivery, battery health, or software.

That could mean a faulty charger, a battery that's reached the end of its life, or something less obvious like a power management or BIOS issue. Heat and age also play a role since lithium-ion batteries naturally lose capacity over time.

Step 1: Figure out whether it's the charger or the battery

Before changing settings or running diagnostics, we want to know whether the laptop is actually receiving power. One of the quickest ways to tell is by watching how the laptop behaves when it's plugged in.

If the laptop runs normally from the charger but the battery percentage never increases, we're usually thinking about the battery itself. If the laptop won't power on reliably even while plugged in, the charger or power input becomes much more likely.

If you have another compatible Acer charger available, try it. Also look for the charging indicator light. Those two checks can quickly tell you which side of the charging system deserves your attention.

Step 2: Check for BIOS or power management issues

Outdated BIOS firmware or power management drivers can interfere with how Windows communicates with the battery. We've also seen laptops stop charging at certain percentages because of battery health features designed to extend battery life.

If charging suddenly stopped after an update—or the battery consistently stops at the same percentage—it's worth checking for:

• BIOS updates from Acer.
• Windows updates.
• Updated power management or chipset drivers.

Those updates won't fix a worn-out battery, but they can resolve software issues that prevent normal charging.

Step 3: Check the battery's health

If the charger looks good and software isn't the problem, the next question is whether the battery itself has simply worn out.

Windows includes a built-in battery report that compares your battery's current capacity to its original design capacity.

To generate one:

1. Open Command Prompt as an administrator.
2. Type powercfg /batteryreport and press Enter.
3. Open the report that's saved to your user folder.
4. Compare Full Charge Capacity with Design Capacity.

If the numbers are far apart—or you've noticed rapid battery drain or inconsistent charging—that usually points to battery wear rather than a charging problem. If you're not sure what other warning signs to look for, our guide to signs your laptop needs a new battery explains what happens as laptop batteries reach the end of their lifespan.

When it's time for a new battery

If the battery no longer holds a usable charge, charges very slowly, or the battery report shows a major drop in capacity, replacement is usually the next step.

One exception is swelling or overheating. Those aren't normal signs of battery wear—they're safety concerns. If you notice either one, stop using the laptop and have the battery replaced as soon as possible.

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FAQ

Why is my Acer laptop plugged in but not charging?

If it runs on AC power but the battery percentage doesn't increase, the battery is often the problem.

How do I know if my Acer battery is bad?

A battery report, rapid battery drain, or inconsistent charging are all common signs.

Can a BIOS update fix charging problems?

Sometimes. BIOS and power management updates can resolve certain charging issues.

How do I check my Acer laptop battery health?

Generate a Windows battery report and compare the current capacity to the original design capacity.

When should I replace my Acer laptop battery?

If it no longer holds a useful charge—or it's swelling or overheating—it's time for a replacement.