The easiest way to find out how much power is required to charge your laptop is to inspect the charger that was sold with it, if you have that to hand. Alternatively you can look for its specification on the manufacturer's website.  You're looking for a figure in watts, although it may be expressed in volts and amps. If so, simply multiply these two numbers to get the figure you need. For example, a device that requires 12V/2A to charge will need a 24W USB-C PD charger (12 x 2 = 24). Once you know what power rating you're looking for, finding a USB-C PD charger for your laptop or console is easy. Sometimes it can pay to get one a little faster than you need - it may be more expensive, but you'll be pleased you bought it if you later decide to upgrade your laptop.