EBCA20 Battery Capacity Tester LeadAcid Lithium Iron 5A Charge 20A Discharge Electronic Load Meter AC Item Type: Battery Capacity Tester Material: Cold Rolled Steel Power Supply Mode: DC 19V-20V, Current Above 3.5A Discharge Current: 0.10-20.00A, The Minimum Step is 0.01A (The current is automatically limited when the power exceeds the limit) Charging Current: 0.10-5.00A, The Minimum Step is 0.01A (The maximum current above 10V is less than the power supply current) DSC-CC Mode (Constant Current Discharge): constant discharge current, used to test battery capacity. DSC-CP Mode (Constant Power): The discharge power is constant, used to simulate constant power equipment. Automatic Charge and Discharge: Support Automatic "Charge-Discharge-Charge" Mode Current Measurement: 0.10-20.00A, Accurate to 0.01A, Error ±0.5% Capacity Measurement: Within 10Ah, The Resolution is 0.001Ah; 10Ah-100Ah, The Resolution is 0.01Ah; Above 100Ah, The Resolution is 0.1Ah. Wiring Mode: Four-Wire Detection Computer Connection Interface: Dedicated USB to TTL Serial Cable (MiniUSB Port, Not Ordinary USB Cable)