You might need to replace your laptop's battery for a few reasons. An obvious one is when you notice your battery life is dwindling. Every laptop battery will start diminishing at some point.

HP, Lenovo, and Dell all sell replacement ... Wondering if it's time to replace your laptop or battery? Replace your laptop ...

5] Check if the laptop battery needs a replacement The laptop battery performance and capacity decrease over a period of time. What you need to check is if the charge capacity is decreased a lot ...