CCDD USB Electronic Load Tester Multifunctional Digital Voltage Current Meter Battery Tester with Fan LD35 NOTE: This product has no reverse connection protection, the input polarity cannot be reversed, otherwise the product is permanently damaged and cannot be repaired._x000D_ Application suggestions: Charger, power supply and other device manufacturers want long-term discharge or batch aging test of products, please choose LD35 (LD25 is not applicable)_x000D_ Application: Assist to measure Micro-USB cable good or not. Assist to measure Type-C cable good or not. Assist to measure output current capacity of charger good or not. The usage of large batch ageing test at the charger factory._x000D_ "SET" button:press "SET" to switch display status, Press and hold the button to set the load output recovery mode after protection removed._x000D_ "ON/OFF" button: press the button to open or close output. Press and hold the button to set the boot default status of open or close. NOTE: Please check the output current of power bank carefully. The current of the general power bank is generally small, so adjust smaller current when the load was used._x000D_ _x000D_ Specifications:_x000D_ Product Model: LD35_x000D_ Rated operational voltage: DC4-25.0V_x000D_ Max discharging power: 25W / 35W_x000D_ Rated operational current: 0.25-4.00A / 5.00A (when fan don't work, the minimum constant current is 0.05A )_x000D_ Hydraulic bearing intelligent temperature control fan,speed 8000±10%RPM(LD 35)_x000D_ Working temperature: -10-40 degC_x000D_ Adjustable potentiometer: Precision multiloop adjustable potentiometer_x000D_ Display mode: 4 bit LED tube_x000D_ Expansion port: Micro-USB port,Type-C port_x000D_ Product Brief Introduction:_x000D_ Micro-USB port:MAX current 2A_x000D_ USB male port (widened power wire,MAX current 5A)_x000D_ Type-C port:MAX current 4A_x000D_ Due to different batches, the words and pictures on the center label may be different, but it will not affect the use_x000D_ Color: black_x000D_ Material: ABS_x000D_ _x000D_ Package Contents:_x000D_ 1 x adjustable resistor_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_