Dell G15 (5510)
On the Dell website it says has one option that says 240W (the one I was using is 180.0 W) is compatible with mine but for $140 I want to be 100%
Also my old one shocked the shit out of me because it was frayed and I had no idea so I want to be 1000% sure so I don’t get accidentally shocked again.
Your current adapter should have the wattage on it - buy the same. If you no longer have it, you can search yoir laptop by the service tag on the Dell Support page (it should detect it, if not the service tag is on a label on the bottom cover) and check the configuration there - it should have the original adapter listed. Buy the same.
If in doubt, just buy the 240W as that should work even if it used 180W.