Description:OOTDTY100% brand new and high quality Material: electrical components ZB2L3 battery capacity tester discharge type 1.2-12V external battery load capacity and other 18650 testsTools, single-function, controlling the load and obtaining real-time integrated discharge current resultsMaximum support 15V 3A discharged by voltage and discharge current, it does not discharge by itselfMaximum statistics capacity support 9999Ah (9999000mAh)Automatically identify and develop the appropriate battery termination voltage can also be manually adjustedSpecifications:Power supply voltage: DC4.5-6V (micro USB connector)Working current: less than 70mDischarge voltage: resolution 1.00V-15.00V 0.01Vend voltage range: 0.5-11.0Vsupported by current: resolution 3.000A 0.001AMaximum voltage measurement error: 1%+0.02VMaximum current measurement error: 1.5%+-0.008ABattery maximum capacity range: 9999Ah (1Ah=1000mAh) greater value by moving decimal point to switch when the display is less than 10Ah X.XXX as shown above to reach 10Ah XX.XX and so on. Board Size: 50mmX37mm End Size: 50mm X 37mm X 17mm (Length X Width X Height Maximum Position Size, Includes Height With Copper Feet)Package Included:1*ZB2L3 Battery TesterInstructions:1. The first test should be fully charged.2. Connect the battery to be tested positively to the positive input, the negative input to the negative, it must not be reversed (with the load reversal may damage the circuit)! Load connected to the output of positive and negative output, to work by the tester's micro USB power supply (USB power supply of desktop or laptop not available), then the battery voltage.3. Direct start test only need one press "OK" button, the tester can automatically develop the corresponding solution of battery voltage full charging voltage, and it will flash after the test three times. Only need to develop an artificial end voltage when the battery voltage displays the status, by pressing the "+" or "-" buttons to modify the end voltage display starting from P, after a representative voltage resolution of 0.1V, configure after pressing the "OK" button start testing.4. After the test starts, the tester will control the load electronic switch is turned on, the test data shows that the process will release the capacity (Ah), the current discharge current (A) and the battery voltage (V) between the wheel was. When the battery voltage reaches the set cut-off voltage, the load control turns off the tester display data with capacity (Ah) and above, and the corresponding indicator flashes quickly together, now it displays the actual battery capacity is discharge capacity, o press "OK" to finish flashing allows stable data display, Press the "OK" button again to return to the power-on state can just replace the battery test in the next section. Error codes and their meanings:Err1: the battery voltage is more than 15VErr2: the battery voltage is lower than the termination voltageErr3: the battery cannot afford to load or discharge the current line of too much resistanceErr4: overcurrent (current exceeds 3.1A)Note: use the resistance of the discharge process, the resistive load will get seriously hot, please pay attention to safety! It's circuit voltage to improve the measurement accuracy, specially designed DC bias when the terminal doesn't display anything, and the small voltage doesn't affect the actual measurement, if you're shorting the input terminals (absolute 0V) will show 0