I have seen the following cure somewhere along the line.
I had a similar issue , its not a fault , it's just the way dell software looks after the battery.
Make sure the laptop is OFF.
Plug the charger into the laptop and the power socket on the wall and switch the power ON so the charger is charging.
Now switch on the laptop.
Let it boot up fully.
Now pull the charger lead out from the socket of the laptop.
Wait a few moments.
Now plug the charger lead back in to the laptop.
And that's all there is to it , well it worked for me !
Now your laptop battery should fully charge .