If your laptop has not fully charged after being connected to a power source for a prolonged period of time, you will need to conduct some basic troubleshooting activities to identify what is causing the problem. Try one of the options provided below to identify what is preventing your laptop battery from charging properly.
Verify that the AC/DC cable is in full working order
Remove the battery and plug the power adapter into the laptop to verify that the device can power without a battery source. If not, the AC/DC cable may be faulty. Purchase a new cable and try again.
Service the battery
Once you have verified that the AC/DC adapter is not the culprit, you will need to check that the battery is working properly. An old battery may be inefficient and may need replacing or servicing. If you’re using Windows, an application like BatteryCare can help you to identify the total capacity of the battery. Connect the device to power for two hours and monitor how this affects the battery power levels. If the total capacity doesn’t shift much, now would be a good time to get the laptop serviced. In some cases, you may need a new battery.
Check the charger board
If you replace the battery and have checked that the AC/DC cable is in full working order but continue to experience problems charging your laptop, it may be that the charger board is broken. If that is the case, you will need to arrange for your laptop to be professionally repaired by a qualified IT service company.