Laptop unable to charge battery

4.5

The laptop runs on AC power but the battery remains at 0%.

Symptoms
  • "0% available, plugged in"
  • Sudden shutdown if unplugged
  • Battery error LED
Possible Causes
  • Dead battery cells
  • Charging circuit failure
  • BIOS limitation

Step-by-Step Fix

1

Reset Battery

Some laptops have a pinhole reset button on the bottom.

2

Update Battery Firmware

Check manufacturer site for battery-specific patches.

3

Replace Battery

If the battery is over 4 years old, it's likely reached its cycle limit.

When to See a Technician

If a new battery also won't charge, the charging controller on the motherboard is faulty.

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