What causes laptop battery failure?

Question

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Answer 1

First rule out charging cord issues.

 Next Review your software options.

If your battery not charging,chances are you have a faulty battery. One of the most common reasons a battery may not charge is its health.

Answer 2

1. Laptop battery is made of Lithium ion cell's and they do have finite amount of charging cycles. So they do go bad over time.
2. Extreme weather condition may also affect battery's health as most of them have specific operating temperature.
3. Damaged cell due to fall or any other accident.
4. Damaged connecting pins of the battery.
5. Not using proper charger.
6. Faulty battery or manufacturing error/defect.