Lookatool&reg; for LG G4 Qi Wireless Charger Charging Pad + Receiver Sticker Support NFC Compatible for LG G4 F500 H815 H815 and Other Versions. Very easy to use: 1. Please take off your case of mobile phone. 2. USB plug in the AC adapter. 3. Micro USB plug in the charger. 4. Put mobile phone on wireless charger panel. Any questions, please feel free to contact us, we will do our best to serve you. 100% brand new and high quality. High power, quick-acting charging. Short-circuit protection of the receiver to avoid overcharge & overheating, security and reliable. Ultrathin, lightweight and portable, good for using at home, office, public area, etc. Note: Please make sure the hungry device is put in the magnetic inductive center and not askew when wirelessly charging. Wireless charging standard: Qi standard. Wireless distance: 5mm. Input: 5V 2000mA. Output: 5V 1000mA. Size: 60mm x 10mm. Frequency: 100-200kHz. Power transform efficiency: &gt;70%. Note: will need to install Qi ReceiverBefore you buy, make sure your cell phone have Mounting receiver.