From Manufacturer
The ONsite Power Plug Angle Adapter from Tether Tools is designed to replace the AC power cord on a camera battery charger or power supply with an integrated IEC C7 socket.
Used to eliminate the clutter of a long cable, one end of the adapter is a 2-prong IEC-C7 connector that attaches to your charger and the other end is a standard 2-prong United Kingdom plug that goes into a power outlet. This adapter's right-angled shape streamlines your charger, enabling it to lay flat against the wall or power strip while charging.