Unplug the system, remove the base cover and disconnect the battery from the system board.  Hold the power button for 30 sec. Reconnect the battery and check again. if the battery is detected, you're set. If not, you will need to replace it -- though it does not require a repair shipment;  on just about all Dell systems, the battery is user-replaceable.  If you don't want to replace it yourself, parts-people.com can likely supply the battery and replace it for a flat fee.  
Hi, My Laptop warranty has expired and unfortunately I am having issues with the battery reporting as non genuine and occasionally not charging. I can confirm that the battery has not been changed. Is there any way to reset the battery or fix this issue without sending it into dell? Laptop is just over a year old and battery has minimal cycles with a charge limit of 80%.   [IMAGE]  
Battery Not Genuine