Can You Charge a Laptop with a Phone Charger?
It depends on the laptop and charger. Many modern USB-C laptops can charge from phone chargers, but at a slower rate. The charger must support USB Power Delivery (PD) and provide sufficient wattage. Laptops with proprietary charging ports cannot use phone chargers.
Key Takeaways
- USB-C has enabled universal charging across devices.
- Gaming laptops and workstations typically require more power than any phone charger provides.
- Older laptops with barrel connectors or proprietary ports cannot use USB chargers without adapters.
Explanation
USB-C has enabled universal charging across devices. Laptops that charge via USB-C can accept power from any USB-C PD charger, including phone chargers. However, phone chargers typically provide 18-30W, while laptops often need 45-100W for optimal charging.
Using an underpowered charger may result in very slow charging or only maintaining battery level while in use rather than gaining charge. Some laptops will not charge at all if the power source is below their minimum threshold.
Always use chargers that support USB Power Delivery protocol for laptop charging. Standard USB chargers without PD support may not work even if the connector fits. Check your laptop's specifications for minimum power requirements.
Things to Know
- Gaming laptops and workstations typically require more power than any phone charger provides.
- Older laptops with barrel connectors or proprietary ports cannot use USB chargers without adapters.
- Charging while the laptop is off or in sleep mode requires less power than while actively in use.