Hello, in order to better experience the work of the load tester, the product has been optimized to upgrade, even below 3V when the fan will work, and will not damage the goods, because before the customer, at 3V, the current is 4.5A, the device will be due to overheating and lead to work, so now the fan is the whole proce changes with the temperature changes, Promise speed, thank you for your question! Products do the latest upgrade, the site picture description is not updated, please wait patiently, and now sent to the latest version of the goods are, thank you! Hello, my friend, the current product has been upgraded 1. The fan will not turn off 2. There is a current of 0.07A, which is the current of the fan! The main function of this product is the aging discharge test! In order to better experience the work of the load tester, the product has been optimized to upgrade, even below 3V when the fan will work, and will not damage the goods, because before the customer, at 3V, the current is 4.5A Time, the device will be caused by overheating does not work, so now the fan is the whole proce changes with temperature, Promise speed, the greater the power, the faster the fan speed! Cooling better! Thank you for your question! 35W constant current double adjustable electronic load + QC2.0/3.0 triggers quick voltage usb tester voltmeter aging discharge 35W Industrial discharge load USB tester:1pcs QC2.0/3.0 triggers:1pcs Note: you need to test Qualcomm QC2.0/QC3.0 quick voltage (5V, 9V, 12V, 20V) and requires a combination of our QC2.0/QC3.0 trigger can test, can directly read Qualcomm QC2.0/QC3.0 fast charging voltage (5V, 9V, 12V, 20V), thank you Industrial discharge load USB tester 2016 new upgrade electronic load King Intelligent temperature control Double adjustment design USB Dual Adjustment accuracy Electronic Load discharger Industrial grade long life 35W power continuous discharge Voltage:1-25V Current:0.1-4.5A Real-time monitoring Voltage display Current display capacity display Electrical voltage display Power display Timing display Power Down Data Retention Charging time protection Support Qualcomm QC2.0 compatible QC3.0 quick voltage range test One screen multi group data Display Take-all Mteasurement 1.35W power continuous discharge,voltage; 1~25V/4-25V, current; 0.1-4.5A 2. using 40 * 40 * 20MM copper roll fan, low noise, strong wind, 3.6063 aerospace aluminum 40 * 40 * 10MM aluminum radiator. , a strong cooling, to protect the life of the load, 4.support iphone5s / 6s, Android Mirco usb, MINI USB, Type-c usb interfaces current test, By current size, you could distinguish charge data cable quality is good or bad . 5. USB tester function to facilitate the test charging voltage and current size. Application example !!!Strong packing!!!