Some Dell laptops have an issue where they loose the ability to charge laptop batteries. Sometimes this can be fixed with a Bios update , however Dell has security to stop you updating the Laptop with less than 10% battery which will not work due to the issue of charging the battery

To force a BIOS update

1. download the .exe in Windows
2. Open command prompt and navigate to the .exe using CD
3. RUN “biosupdatename.exe /FORCEIT” which will install the bios update without the warning about 10% charge