This product is either discontinued or we cannot get that from suppliers.
Hp 3TB55AA Usb-c Essential Power Bank, Black, Input Connectors 2 x power DC jack 7.4 mm, power DC jack 4.5 mm.
Charge and power your Windows or macOS® notebook and USB devices from a single USB-C™ connection, even when you can’t plug in, with the HP USB-C Essential Power Bank.