Description: <br>This is a device used to simulate an electrical load, usually for testing purposes. This discharge tester is used for testing a battery or power bank. It can also be used to test current of a USB cable so you could judge if the cable is of good quality. It is designed with a aluminum heat sink and a cooling fan for better heat dissipation, which will start working automatically when temperature is higher than 55°C and stops when temperature is under 45℃. <br> <br> <br>Features: <br>There are 2 adjustment knobs, one coarse knob and one fine knob, that can be used for quick and accurate current control. <br> <br>The input USB port is reversible for easy plug in which mean that you don't have to worry about up or down position of it. <br> <br>Designed with a high standard aluminum heat sink in the middle for better heat dissipation. <br>The cooling fan of 2900rpm will start working when temperature is higher than 55°C and stops when temperature is under 45℃. <br>These is a small LCD display that you can check voltage, current and capacity. <br> <br> <br> <br>Specifications: <br>Voltage Range: 4-30V DC <br>Test Current: 0.1-4.5A <br> <br>Operation Temperature: -10 to 65°C <br> <br>Size: 105 x 55 x 43mm / 4.13 x 2.16 x 1.69" <br>Heat Sink Size: 40 x 40 x 10mm / 1.57 x 1.57 x 0.39" <br>Constant Discharge Current: 0.1-4.5A adjustable(coarse adjustment knob for 0-3A, fine adjustment knob for +/-0.2A) <br>Current Error: Less than 2%+3mA <br>Constant Rated Discharge Rate: 35W(if voltage is 21V, constant discharge current should be less than 1.6A) <br> <br> <br>Package Includes: <br>1 x Load<br>1、There are 2 adjustment knobs, one coarse knob and one fine knob, that can be used for quick and accurate current control <br>2、The input USB port is reversible for easy plug in which mean that you don't have to worry about up or down position of it <br>3、Designed with a high standard aluminum heat sink in the middle for better heat dissipation <br>4、The cooling fan of 2900rpm will start working when temperature is higher than 55°C and stops when temperature is under 45℃ <br>5、These is a small LCD display that you can check voltage, current and capacity