Battery is not charging properly ....?

Have you checked the bios battery status and bios version? first check if battery has charge if yes then update the bios. also try to remove batt and use ac adapter alone and check if laptop has sufficient power. try connecting ac adapter to a diff wall socket. if laptop works fine with ac adapter alone then batt might has problem.

hi there !

-battery of laptop only carry 1yr warranty; if the battery is more than 1yr you need to purchase a new one.
-if battery is less than 1yr then
1.visit support.dell.com
2.click on drivers and downloads
3.click or choose by service tag
4.download the BIOS and install it on the computer
if problem persists this could be a problem on the AC adapter or main board of the computer, consult manufacturer for further information

cheers!