How to tell if your laptop battery is really the problem?
If your laptop is giving you a warning message that you need to replace your battery you can skip the troubleshooting and order a battery.
If your laptop doesn't turn on while it is plugged into the wall you likely have a charger or hardware problem and not a battery problem.
If your laptop works without the battery while it is plugged in you likely have a battery problem.
Go to our battery will not charge to 100% page for more details.