If your laptop can charge via USB-C PD, you can plug in a portable charger that supports USB-C and charge from it. But you can’t use just any battery: You’ll want a battery that offers enough charging speed (watts) to charge your laptop and enough capacity (mAh) to fill it up.
Can you charge a laptop with USB C?
USB-C is a universal charging standard. That means that, technically, it doesn’t matter what USB-C charger you use, it should be able to power up a laptop with a USB-C charging port and power bank. … Some laptops come with USB-C ports that don’t charge.