Batteries are one of the most common parts we see failing in laptops. They’re a part that wears out, just like your car battery. The problem is name-brand ones are expensive. You can save 90% or more by buying generic. Don’t.
Although the news is full of examples of minor fires or personal injuries, few top this story. A cheap battery from Amazon destroys a house. We’ve seen permanent damage to laptops from counterfeit batteries, but nothing like this.
It’s just not worth skimping on a battery. That’s one reason why we usually recommend replacing a laptop after a few years. With new laptops costing around $400 and replacement batteries around $100, it’s often better to get a new laptop with a new battery and a new warranty.