Product Info
Now you no longer have to carry the power adapter back and forth between the office and home. Equip yourself with a second power adapter for your notebook, so you have one for the office and one for home or on the road. Dell's 90-watt power adapter is specifically designed to meet the power requirements of your Dell notebook. The powerful 90 watt power adapter allows you to connect your system to the power supply to operate and charge the battery at the same time.
If your notebook does not charge via USB-C, this is usually not due to a defect, but to compatibility or performance problems. USB-C uses the power delivery standard (USB-PD), which must be supported by both devices.
The most common causes:
Troubleshooting tips:
Caution: You can tell that charging is working if the charging indicator reacts immediately and the power supply unit clicks or hums briefly. If this does not happen, there is almost always a compatibility problem.
Inside a power supply unit are components that convert the mains voltage (e.g. 230 V) into the right voltage for your notebook. GaN power supply units use gallium nitride semiconductors for this purpose.
This has several advantages:
Important: GaN power supplies are currently still somewhat more expensive than conventional notebook power supplies. The combination of compact form factor and proven quality makes them an attractive choice for many customers.
Modern laptop power supplies are so-called switching power supplies - they work with very high switching frequencies and should function practically silently. If you still hear a humming, hissing or whirring noise, this is not normal and often indicates a technical defect or inferior components.
Typical causes are
Such noises hardly ever occur with original power supply units as they undergo strict quality and safety tests. Replica power supply units, on the other hand, often use simple components without sufficient interference suppression - here, humming or hissing is a clear warning sign.
Important: If a power supply unit hums or hisses audibly, stop using it!
Disconnect it from the power supply immediately and dispose of replica power supply units immediately, as they can pose a safety risk. Only use original power supply units to ensure a stable, quiet and safe power supply for your notebook.
No, just because the power supply has more watts, your battery will not automatically charge faster. The decisive factor is the power required by your notebook and the permissible power of the charging electronics - not the maximum power of the power supply unit.
How does charging work technically?
This means:
If your notebook is only designed for 65 W, for example, a 90 W or 120 W power supply alone will not provide a turbo charging advantage. The device limits the charging current itself.