If you need to replace your laptop charger or would like to order a charger to have at home, here is the link to a Dell genuine part on Amazon. You may find one less expensive. Just please make sure it matches the specs of the original charger to avoid damage to the laptop. 

https://www.amazon.com/Dell-65-Watt-AC-Adapter/dp/B0163TTCL4/ref=asc_df_B0163TTCL4/?tag=hyprod-20&linkCode=df0&hvadid=309833041189&hvpos=&hvnetw=g&hvrand=10505880633948623997&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9009970&hvtargid=pla-569188205731&psc=1

Power Adapter Specs