How powerful of a power bank do you need to safely charge a laptop?

Choosing the right power bank for a laptop involves more than just looking at the total capacity in milliamp-hours (mAh). While capacity determines how many times you can charge your device, the power output, measured in watts (W), is crucial for ensuring your laptop charges efficiently while in use. Many standard phone chargers lack the necessary wattage to sustain a laptop's power draw, which can lead to slow charging or the battery draining even while plugged in. To safely and effectively charge a modern laptop, users should look for power banks that support USB-C Power Delivery (PD) and provide a wattage output that matches or exceeds the laptop's requirements. Understanding these technical specifications is essential to avoid hardware issues and ensure that your portable power solution can actually keep your device running during travel or remote work sessions.