35W USB Intelligent Electronic Load Tester Digital Display Voltmeter Adjustable Constant Current Aging Resistor Voltage                     USB intelligent electronic load, intelligent temperature control fan, precision adjustable potentiometer, load open indicator, plug and play. No components on the back to increase reliability and reduce quality control points     Note: Some power banks or chargers have a low-current automatic shutdown function. If the EL35 type load is inserted and does not start, due to the very small current consumption, such power banks or chargers will automatically shut down. In this case, it is recommended to choose to turn on the load by default.     The output current capacity of ordinary chargers or power banks is only 1-2A, pay attention to the load should be reduced, otherwise the voltage will be pulled down or even power off. The capacity statistics will only be stored once when the load is turned off or OPP OTP occurs to ensure that the data will not be lost when the power is turned on again.     SMALL AND PORTABLE: This product is small and light, does not take up space, and can be easily taken away.          Product parameters     Input voltage: DC3.5-28V     Maximum discharge power: 35W     Adjustable load current: 0-5A     Constant current accuracy: +(1%+3 words)     Operating temperature: -10°C~40°C     Display type: 4-digit LED digital tube     Capacity statistics range: 0.001AH-9999AH     OTP temperature: Greater than 70°C     Fan speed: large size intelligent temperature control fan (speed 8000+10%RPM) Cooling method: intelligent temperature control fan + all-aluminum heat sink     Adjustment potentiometer: precision adjustable potentiometer     Product interface: USB-A interface, pad     Fan start conditions: temperature 50 ℃ or power Greater than 7W     OPP power: Greater than 36W     Product size: 81 x 40 x 41 mm     Product weight: 50g     Note: The storage capacity is only once when the ON button turns off the load.     Material: PCB     colour: black          Package Contents:     1 x USB Tester Electronic Load          Only the above package content, other products are not included.     Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.