If the system does not recognize the AC adapter (check in Setup, F2 at powerup), the battery will not charge. If you've already replaced the adapter and battery, and the system has a barrel connector, replace the DC jack in the system. If that doesn't work, or you have USB-C charging only, the system board will need to be replaced.;  
Please Help. I have tried everything. My laptop only says plugged in, but it is not increasing in charge percentage.  I have tried uninstalling and reinstalling the drivers under battery in the device manager with reboots. I have removed the battery and held down the power button to drain residual power. I have ran bios diagnostics, regular power diagnostics, and diagnostics from dell website. It wont charge. It does not say not charging, but it has stalled. Ordinally thought was hardware issue, Replaced charger then battery.   What am I missing?
Battery Not Charging.