100% brand new and high quality. Features: Cause sterility new design, simple and versatile electronic load. Automatic memory function with all parameters, is well suited for automated assembly of the power adapter aging cabinet. Larger size and upgrade the fan into the original 5020 Delta high speed dual bearing fan , higher cooling redundancy , more suitable for long hours. This product is a professional testing equipment, requiring the user must have some basic electronic, or you may be unable to properly use the device , possibly mishandled cause unnecessary damage caused by the test device loss. Power supply requirement : DC12V voltage ( actual voltage 11-14V) current is not less than 0.5A of power. Specifications: Operating modes: single mode constant current (CC) Discharge current : 0.20-9.99A stepper 0.1A or0.01A Discharge current maximum error : 0.7% -0.01A The maximum capacity test error : 0.5A 2.5%, 2A 1.5%, 5A and above 1.2% Offline ( termination ) Voltage Range : 1.0-25.0V stepping 1V or 0.1V Discharge voltage : 1.00-30.00V The maximum voltage measurement error : 1% + - 0.02V It can open 9.99A 6V and 20V maximum at the only open 3.00A) Highest battery test statistic : 999.9Ah or 9999Wh, achieve value stop testing ( first value to those who stop condition )) Fan control: intelligent fan control ( according to the radiator fan can be infinitely variable automatic temperature ) Protection: Overheat protection "otP", transient overpower protection "oPP", overpressure protection "ouP", reverse polarity protection, power supply voltage abnormal protection . Material: Metal and Electrical Components Size: approx.105x70mm/4.13x2.76in Color: As pictures shown Quantity: 1 Pc Instructions: 1. A : mode settings ( default factory for electronic load mode ) : Hold down the start-stop button ( red button ) to the tester simultaneously energized until the key is released showing Fun * When , by rotating the knob to change the setting , "Fun1" for electronic load mode , "Fun2" battery capacity test mode. Push button start and stop at the buzzer after entering the settings, also set "bEon" buzzer by turning the knob to open or "bEoF" buzzer closes After setting press the button again to start and stop at the tester restart. Setting Digital Illustration: 2: Electronic Load mode: 1. Turn on the power supply 12V boot into electronic load mode , ensuring in a stopped state ("RUN" does not light, otherwise the press of the start-stop switch to turn off the load ) connected to the power supply under test to the test port input power (P + P - ) , pay attention not to take the wrong polarity 2. Set current and lower voltage knob , turn the knob to set the value of the current setting position , then press the knob to change the setting digit, digital middle two digits to the right of the indicator and digital indicator VA simultaneously determine the current set position . 3. Press the start-stop switch , load began to run , "RUN" lights , power is applied to the circuit under test is set to enter the discharge current , while the upper display the actual input load voltage , when the voltage drops below the set limit voltage " RUN " LED flashes and short beep alarm buzzer accompanied. 4. The test procedure can be modified at any current , and if you need to modify the lower voltage to stop the load can modify . Note:When in alarm state , can only transfer a small current does not increase Tester automatic power-down feature to save enough to save the set parameters and run state, when the state again after power transmission will complete before the power failure and restore data. 3: The battery capacity test mode: 1. The test battery should be fully charged with a special charger 2. Give the tester is powered into the battery capacity test mode, connect the battery current line to P + P-positive and negative terminals , if you use four-wire clamp test, while the four-wire interface to the positive and negative voltage test fixture is connected to V + V - port. 3. Turn the knob to set the discharge current and discharge voltage ( referring to two specific methods : 2 Description ) ,one press after setting the start and stop switch , a battery tester and a first line detection, automatic identification 2-4 line ( 2-wire line identification presentation JS-2,4 identification JS 4, if an error please stop the test and check the wiring ) , then enter the test , if the fault code appears , refer to later explain . The testing process will round up digital noticeable battery voltage , current , and the current discharge capacity Ah discharge energy when the discharge end ( battery voltage is below the set voltage ) , the tester displays the data stays in Ah and rapidly , with bee shortness buzzer alarm. 5. Press the start and stop at the knob or switch to stop the