Tip: If you need English manual and software, or if you need any help, please tell the seller to send it to you. NOTE: The voltage of the test element (battery, etc.) cannot exceed 5V. If it exceeds 5V, the circuit board will be burned out and irreversible.Positive and negative connections should not be reversed.Always use the tester within the allowed range. Testing interface The first line shows mode (CC-constant current), voltage, and current. The second line shows working process, working time (in minute) and capacity (automatic switch between 0000mAh and 00.00Ah). Working process reads OFF when the test stops and DSC or CHG in testing.It shows AT1 if you choose automatic charging/discharging and 1 means the step 1 of current testing. A short press on the “SET” button and the display changes to power and energy. In auto test of “charge-discharge-charge”, you can check test results of each step by spin the “SET” knob. Press the “ON” button to start discharging test (shows DSC) and one more press to stop (shows OFF). You can open setting interface by press on the “SET” button for 2 seconds in the stop state (This function is invalid when the tester being connected with the PC software). Model EBC-A40L Voltage range charge 0-5V, discharge 0-5V Voltage accuracy 0.2% ± 0.03V Current range charge 0.1-40A, discharge 0.1-40A Current accuracy 0.2% ± 0.01A Discharge mode CC constant current discharge / CP Constant power Discharge termination time / voltage is lower than the set limit / Manual Discharge power maximum 200W Charge mode CV constant current constant voltage charging Charge termination constant current is less than the set limit / Manual Package included: 1 x Tester 1 x Online line 1 x Test line 1 x Power cord