brand new and high quality Features: Made of high quality material, solid, durable and good conductivity and performance, long service life. It is designed for testing battery capacity, resistance, discharge and so on. Single function that by controlling the load off and get real-time integrated discharge current capacity results. Maximum support 15V 3A discharged through the discharge voltage and current, itself does not discharge. Maximum capacity statistics support 9999Ah (9999000mAh). Automatically identify and develop appropriate battery termination voltage can also be manually adjusted. High energy efficiency, long life, low power consumption. Small size, easy to carry and use. Specification: Material: Circuit Board, Electronic Components Size: app.5 x 3.7cm/1.97 x 1.46in Color: Blue Quantity: 1 Pc Product Parameters: Power Supply Voltage: DC4.5-6V (micro USB connector) Operating Current: Less than 70mA Discharge Voltage: 1.00V-15.00V, 0.01V resolution Termination Voltage range: 0.5-11.0V Supported by Current: Max.3.000A, 0.001A resolution Maximum Voltage Measurement Error: 1% + 0.02V Maximum Current Measurement Error: 1.5% 0.008A Maximum battery capacity range: 9999Ah (1Ah = 1000mAh) greater value by shifting the decimal point to switch, when the display is less than 10Ah X.XXX, as shown above, to achieve 10Ah XX.XX, and so on. Instructions: 1. The first test should be fully charged battery. 2. Connect the battery to be tested positive to positive input, a negative input to the negative, can not be reversed (with load reversal may damage the circuit) The load connected to the output of the positive and negative output, to work through the tester micro USB power supply (not available desktop or laptop USB powered), then the battery voltage. 3. Direct start test needs only one press of the "OK" button, the tester can automatically develop an appropriate termination voltage of the battery full charge voltage, and will start flashing after the test three times. Need to develop artificial termination voltage only when the battery voltage display state by pressing "+" or "-" buttons to modify the termination voltage display beginning with P, behind the representative voltage resolution 0.1V, set up after pressing the "OK "start testing. 4. After the start of the test the tester will control the load of the electronic switch is turned on, the test data shows that the process will release capacity (Ah), current discharge current (A) and battery voltage (V) between the wheel was. When the battery voltage reaches the set cut-off voltage, load control switches off the tester display data stays in capacity (Ah) and above and the corresponding indicator flashes quickly together, now displays the actual capacity of the battery is discharging capacity, about the press "OK" to terminate flashing allows stable data display, press again "OK" button to return to the power-on state can just replace the battery test the next section ...... Tips: This circuit voltage in order to improve the measurement accuracy, specially designed for DC bias, when the terminal displays nothing then a small voltage does not affect the actual measurement, if you are shorting the input terminals (absolute 0V) will show 0 Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Battery Capacity Tester