USB ports at home, such as those of a wall plug or on the side of your laptop, tend to have an output of 2.1A or 2.4A. For comparison, ... USB-C charging from a 12V socket.

The Kensington “Power It” line additions include the Auto Power Inverter with USB Power Port (SKU K38022), Portable Power Pack for Mobile Devices (SKU K38021), Wall Ultra Portable Notebook ...