If you have a modern smart phone you may have noticed that it comes with built in wireless charging capability called 'Qi charging.' Qi is a trademark name for a thin and smart inductive charging system. This is the 20mm Reverse version of our different Qi Micro USB Modules. These receivers only provide power on the USB's +5V and Ground pins. Some phones (like the Moto X) require a special voltage on the data lines, and won't charge. Check online documentation for your phone to see if you can get away with not having any voltages or connections on the data lines! Technical Details Output Voltage: DC5V Output Current: 600m A Max Max Power Transmission: DC 5W Operating Frequency: 100-200Khz Conversion efficiency: >70% Charging distance: 2-6mm Weight: 25g