ITEM NAME:DIY 3 coils Qi wireless charger PCBA circuit board 5V/2A Qi wireless charging ME Specification: 100% brand new and high quality 1. Input voltage: DC5v, beyond this range, the voltage stops charging. 2. Input current: DC1.5-2A 3. Output voltage: DC5V. 4. Radio Current: 0.5-1A 5. Charging power: up to 5W 6. Conversion efficiency: greater than 73% 7. Transmission Distance: Maximum 7mm, Recommended Transmit-receive Distance 2mm~4mm 8. Standby power consumption: average power consumption is less than 50 mW 9. Over-temperature protection: When the charging temperature is higher than 60 degrees, automatically stop charging for 1 minute, and recharge after the temperature drops. 10. Overcurrent protection: When charging, the output current is greater than 1.8A, it automatically stops charging to prevent damage to the charger. 11. Implementation Standard: Qi Wireless Charging Standard WPC1.1 12. Working frequency: 100-205KHZ 13. Coil Type: QI A6 Three-coil Fine workmanship and stable performance. Long service life. Package included: 1 x Wireless Charger Transmitter Module Coil PCBA Circuit Board Note: Due to the hand measurement, there have size error about 1-3cm Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.Coil Type: QI A6 Three-coil. Charging power: up to 5W. Radio Current: 0.5-1A. Standby power consumption: average power consumption is less than 50 mW. Working frequency: 100-205KHZ.