Error code and meaning:

Err1:battery voltage is higher than 15V

Err2:battery voltage is lower than set cutoff voltage

Err3:load discharge current is too big for battery or circuit inner resistance is too big

Err4:current is too big (current is more than 3.1A)

Err5:Improper use or burned tester because of incorrect connection (current sampling or control switch MOS is burned)

Secondary calibration operation:

Press and hold three buttons at the same time and power tester to enter calibration mode. First display calibration record times then enter formal calibration sampling program shows 0u0A; Connect input terminals positive and negative then press the "OK" button, display shows J10u; Connect standard 10.00V DC voltage to input positive and negative then press the "OK" button, display shows J2.0 A; Connect constant 2.0A DC current to output negative and input negative then press the "OK" button to complete the calibration.Tester will pre-check calibration data, if the calibration data is correct, it will show four calibration data in turns then exit; if pre-check of data is unreliable, it discards the data then exit.

Use a Demo

Instruction:

1. The measured battery should be charged in the first place.
2. Connect the battery to the input terminals correctly(positive to positive, negative to negative), reverse input may damage the circuit.Connect load to the output positive and negative, then power the meter with micro USB work power (do not use a desktop computer or laptop USB as power supply), it displays the battery voltage at this time.
3. Direct start test just need to press the "OK" button, then meter will automatically develop an appropriate cutoff voltage according to the battery fully charged voltage, then begin testing after display flashing 3 times.If need manual setting up for cutoff voltage, you can press "+" or "-" button when ti shows battery voltage. The cutoff voltage is displayed with a initial "P", and the resolution is 0.1 V, press "OK" to start testing after setting.
4. The testing data will be displayed in turns among discharge capacity (Ah), real-time discharge current (A) and battery voltage (V). When the battery voltage reaches set cutoff voltage, tester cut off the load control switch, and displays capacity (Ah) and fast flashing indicator light. The capacity now displayed is the actual discharge capacity of the battery. Press the "OK" button to stop flashing, and press the "OK" button again to reset tester for next battery testing.