Charging a laptop through a car's USB port isn't the best option. The ports typically found on dashboards or center consoles are designed primarily for smartphones and media playback, not for the higher power requirements of laptops. This can lead to slow charging or even no charging at all if you attempt to use them for your laptop.
Understanding Power Requirements
Most vehicles have USB ports that offer limited power output. For instance, standard smartphone charging usually starts around 5W to 7.5W. In contrast, modern laptops require significantly more power. Take the M5 MacBook Air, which features a dynamic charger of 40W (max 60W) and requires a USB PD source of 70W or higher for fast charging. Similarly, the latest 14-inch MacBook Pro comes with a 70W charger and needs at least 96W for optimal charging performance.
Windows laptops also have comparable power requirements. You can find the wattage needed for your laptop charger printed on the power brick or adapter. This number is crucial when selecting an appropriate charging solution.
Check Your Vehicle’s Capability
Some newer vehicles, including many electric cars, come equipped with more powerful USB-C ports that can charge laptops. However, do not assume your vehicle falls into this category without verification. Check for labels near the port or consult the owner's manual for mentions of USB-C Power Delivery (PD) or high-watt charging capabilities. If no such indication exists, standard USB ports are unlikely to charge your laptop effectively.
Best Charging Solutions
For most users, a USB-C PD 12V charger is the optimal choice. This device plugs into the car's accessory socket (often referred to as the cigarette lighter) and typically provides much greater power than the built-in USB ports. Make sure to check the watt rating on the charger and ensure it matches your laptop's power brick specifications. If your laptop typically uses a 45W or 65W charger, look for a USB-C PD 12V charger that supports at least that wattage range.
Another option is a power inverter. This accessory also connects to the accessory port but provides a full AC outlet. This way, you can bypass USB-C and directly plug in your laptop's wall charger. Ensure that your car's socket can handle the load, especially if you're using a larger charger or inverter. You can verify this by checking the manual or labels near the port.
Using Power Banks for Convenience
A third alternative is to utilize a laptop-friendly power bank. Models designed specifically for laptop charging usually serve as a good starting point. However, always check the watt rating to confirm that it meets your laptop's requirements.
By understanding your laptop's power needs and selecting the right charging solution, you can ensure that your devices remain powered during travel without relying on the often insufficient USB ports found in cars. Always align your choice of devices with the specifications of your laptop's original charger to guarantee efficient charging.
Source: https://telset.id/how-to/jangan-cas-laptop-di-port-usb-mobil-ini-solusinya
