150W Constant Current Electronic Load Board Battery Discharge Capacity Tester Module Description: Features: 1602 LCD screen, display information comprehensively. Configuration of 9cm CPU fan, very quiet. Test all kinds of power load or burn-in, can also test capacity of battery discharge. Specifications: Voltage: DC 12V±5% Load Type: Constant current Load Current: 0-10A Maximum Power: 150W Current Reading Precision: ±(0.2%+0.1%FS) Constant Current Accuracy: Current reading Precision + 1d Noise: 25dD(A)  Weight: 341g(approx.) Instruction: Wiring Diagram of 2 Wires (Safe and convenient): Note: 2 wires must be respectively connected to A+ and A-. V+ is connected to A+, and V- is connected to A-. Wiring Diagram of 4 Wires:  Note: 4 wires must be connected completely before use. Below is the operation interface. The operation is very simple and easy(when it displays "ON", it must be connected to load, otherwise it will beep and won't work) Bottom left screen corner will display information that automatic switching between power, AH, temperature, time, and can be set to always display certain one. "I": Setting load current 1, the power adapter: DC 12V, load power and power supply should be 2 independent power. 2, Power on and screen shows "Welcome e" which means equipment is normal 4, Connect to power source that need to be tested, and make sure the wiring is correct. 5, Press "start" button to start/stop electronic load, and screen shows "ON" or "OF" 6, Press and hold "start" button for more than 1 second to reset AH and time, and power off the electronic load (if it was powered on) 7, The bottom left screen corner will display information that automatic switching by default every 2 seconds between power, AH, temperature, time. Press and hold "set" button, then press "add" button to switch, and the display information will not switch automatically.  If you need the information to switch automatically again, press and hold "set" button, then press "subtract" button till bottom right screen corner shows "Auto". 8, Settings will be automatically saved after power failure. Electric loaf need to be manually started when power is back. 9, Continuous operation power of load is associated with operating temperature. When temperature is too high, operation power should be reduced. If the heat sink temperature reaches 87 ℃, the load will automatically reduce power. When the core temperature reaches 91 ℃, it will stop work, and need to be manually started after cooling. 11, Reset first if need statistics of AH and time. It has been accumulating by default, will not automatically reset, and can only be reset manually. 12, Turn On/Off Buzzer: Press and hold "set" button, then press "start" button to turn on/off buzzer, screen displays "BU-ON" or "BU-OF", automatically saved after power failure.   Note: 1, Power supply and load testing power supply must be independent from each other; otherwise it may lead to uncontrollable load or other unpredictable situation. 3, Connecting wrongly positive and negative positive and negative electrodes of test power supply will cause short circuit, and if the current is too large, power tube may be damaged. Avoid wrong wiring, please. 4, Users need to have some knowledge of circuit, please make sure you know how e it. 5, It is suggested to power on this item before connecting with test power supply or test batteries. Package Includes: 1 x Electronic Load Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.