A laptop AC adapter makes it possible to charge the laptop in order to give it maximum mobility. It converts alternating current supplied by the wall unit into direct current which helps the laptop to function. A fully charged laptop can work for a long duration without being connected to any external power source. Without an adapter to recharge the computer battery, you can never imagine carrying it to all the places that you want. Therefore, it is important to take good care of it and keep it functioning at all times.
A faulty battery can be a reason behind the battery not charging with the adapter connected to it. It is important to attempt charging the laptop with another laptop AC adapter. If everything works as desired, the user should change the adapter.