ITEM NAME:DIY Qi Standard Wireless Charging Coil Receiver Module PCB Circuit Board, 5 B5X4 DIY Qi Standard Wireless Charging Coil Receiver Module PCB Circuit Board, 5 B5X4 Pure copper coil, high permeabillity, low loss, assuring fast charging Can charge the battery directly Charging current is around 5V1A Can be directly connected to the phone's motherboard, the phone will display wireless charging Red is positive and gold is negative. The wire can be bent freely Product Name: Wireless Charger Receiver Module Input Power: 5V 1A or 9V 0.5A Output: Power up to 5W Charging Efficiency: 75% Transmission distance: 2-8mm Charger Applicable Form: Wireless Charger Executive Standard: Qi Wireless Charging Standard Board Size: 1.9 * 3.2cm / 0.7 * 1.3in Copper Coil Size: 4.1 * 2.9cm / 1.6 * 1.4in Cable Length: 5cm / 2.0in Weight: approx. 6g colour:Photo Color Material:plastic Package Contents: 1 * Charger Receiver Module PCBA board coil