How to know if my laptop charger is broken?
It is recommended as a test of whether battery is the problem to connect your laptop to a power source via the laptop charger. Give the laptop plenty of time to charge. Then turn the PC on and go to the system tray within Windows to see if the battery icon is full. If your laptop charger is broken, consider a replacement universal laptop charger as a quick and cheap alternative.
Also in Charging Angels Q&A Blog