Product Description EBC-A40L is a high-current battery charge and discharge capacity tester for 5V battery and performance testing, through the online software with more extensions. This model default 220V power supply, If need 110V power supply, please contact me. Thank you! Product Parameter: 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 Capacity test: 10Ah, the resolution of 0.001Ah 10Ah-100Ah, the resolution of 0.01Ah above 100Ah, the resolution 0.1Ah Cooling method: fan active cooling Equipment Supply: 220VAC Package Include: 1x tester 1xOnline line 1x test lines 1xpower cord