Why does my Dell say “adapter cannot be determined”?
That warning usually means a non-genuine or faulty adapter, a damaged centre pin, or a wrong-wattage charger. Use a correctly rated Dell adapter with the proper 4.5mm pin to clear it.
Dell Laptop Chargers & Adapters (45W, 65W, 90W, Type-C)
Dell uses a 4.5mm barrel pin with a centre signal pin on many Inspiron, Latitude and Vostro models, plus USB-C on newer ones, rated 45W, 65W or 90W. A Dell charger missing the centre pin signal can cause “unknown adapter” warnings and slow charging.
Each Dell charger lists wattage and connector. Match the rating on your old Dell adapter, or send the model and we will confirm.
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Dell
Compatible 90W Laptop Charger for Dell Inspiron 15 3521, 15r 5010, 15r 5537, 17 5748, Latitude 14 E5450, Vostro 3560, Studio XPS 16 Series 19.5V, 4.62A, 7.4mm x 5.0mm
5.0 (13)
₹450 ₹1,299
Dell
Compatible Dell 65W Laptop Charger for Inspiron 15, 17 5758 5759 Series (19.5V, 3.34A)
4.8 (10)
₹450 ₹1,299
Dell
Compatible Dell 130W Laptop Charger for Inspiron 15R, 17R, Latitude E6400 Series (19.5V, 6.7A)
4.0 (1)
₹450 ₹2,499
Dell
Compatible Dell 45W Laptop Charger for XPS 13 9343, Inspiron 15 3552, 5368 (19.5V, 2.31A)
5.0 (5)
₹450 ₹1,299
Dell
Compatible Dell 150W Laptop Charger for Alienware M14x, Latitude E5450, E5550 Series (19.5V, 7.7A)
5.0 (1)
₹450 ₹1,999
Dell
Compatible 180W Dell Laptop Charger (19.5V, 9.23A) 4.5*3.0MM
5.0 (1)
₹450 ₹2,499
Dell
Compatible 130W Dell Laptop Charger for Dell Inspiron 15 7501, 945M8, 7590, 5510, 5520, 3800, 5540 (19.5V 6.67A) 4.5*3.0MM
4.6 (0)
₹450 ₹1,999
Dell
Compatible 130W Dell Laptop Charger for Dell G3 15 3579, 3590, 3779, 5590, 7588 (19.5V 6.7A) 7.4*5.0MM
4.6 (0)
₹450 ₹1,999
Dell
Compatible Dell 90W Laptop Charger (19.5V, 4.62A) 4.5*3.0MM
4.6 (0)
₹450 ₹1,299
Dell
Compatible 90W Type-C Universal Laptop Charger for Microsoft Surface 4 3 Pro 8, Hp, Lenovo, Dell Latitude 5280, 5480, 5580, 7280, 7380, 7480 Series Laptops
5.0 (4)
₹450 ₹1,699
Dell
Compatible 180W Laptop Charger for Dell G7 15 7590, Precision 7670, Alienware M15, X51 Series (19.5V, 9.23A) 7.4*5.0MM Pin
5.0 (2)
₹450 ₹2,999
Dell
Compatible 150W Laptop Charger for Dell Latitude E4200, E4300, Vostro 3700, XPS 14 Series (19.5V, 7.7A) 7.4*5.0MM Pin
5.0 (1)
₹450 ₹2,499
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Frequently asked questions
Can I use a 90W Dell charger on a 65W Dell laptop?
Yes. Same connector, higher wattage is safe. Avoid going below the original wattage.
How do I know my laptop charger wattage?
Read the original adapter’s label. It shows output like “19.5V 3.34A” — multiply volts by amps to get watts (here ~65W). Buy the same wattage or higher, never lower, and keep the same voltage and pin type.
Can I use a higher-wattage charger safely?
Yes, if the voltage and connector match. A 90W charger on a laptop that came with 65W is safe — the laptop only draws what it needs. A lower-wattage charger is the one to avoid.
What is the difference between barrel-pin and Type-C chargers?
Older laptops use a round barrel pin in a specific diameter. Newer thin laptops charge over USB-C Power Delivery. They are not interchangeable; check which port your laptop uses and the required PD wattage for Type-C.
My laptop says “plugged in, not charging” — is it the charger?
Often yes, especially if the laptop runs only while plugged in or charges intermittently. It can also be the battery or DC jack. See our diagnosis guide and test with a known-good charger of the correct rating.