Are you worried that your battery is starting to die and may need to be replaced? Are you looking for a used laptop and want to make sure that the battery is in reasonable condition before you buy?

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Lithium-ion batteries are one of humanity’s greatest inventions. They have already helped us develop portable electronic devices and electric vehicles and are on the verge of conquering the grid ...

If your laptop battery isn't charging, first make sure there is no problem with your power adapter and cable. On a modern laptop that charges via USB-C, make sure you're using the right USB-C port.