There is likely a fault with at least one of three items: It's a process of elimination to figure out where the problem lies, or at least where it doesn't lie. For example, if your charger is recognized and works on another Dell laptop, then the problem is likely your charging jack or charging circuit. Hold F2 while booting, to enter BIOS. See if the charger is recognized. Try another genuine Dell charger of at least the same wattage/amperage as your original. If that second Dell charger works, then the fault is likely with your charger. If it doesn't work, then the fault is likely with the jack or the circuit. The jack is a relatively inexpensive item that is not difficult to replace for someone experienced in working on laptops. If a good charger and a new jack won't work, then the fault is likely with the charging circuit on the motherboard, which would normally require replacement of the motherboard. I would have given you a link to where you can buy the charging jack, if that's needed, but I don't know your laptop model. You wrote 3505 but you selected 3793 on the form when creating this thread.
I've done several things to resolve the charging issues, but nothing has cleared the problem. Here's what I've done; And the white charger light at the power socket doesn't come on. The new Dell battery stays charged at 33%. Any suggestions or solutions would be appreciated.
Inspiron 3505 battery not charging