Description: , high quality Features: EBC-A20 is a battery tester with charge and discharge fanction, applicable to test the capacity of lithium and lead-acid (charging 5A, discharge 20A, maximum power 85W), support separate charge and discharge and charge-discharge-charge test. It may be connected to the computer, can repeatedly charge and discharge and has extended functions through online software. This model does not support NiMH, NiCd charging Specification: Model: EBC-A20 Material: Electronic component Size: approx.15x18cm / 5.91x7.09in Color: White Power supply: DC19-20V, 3.5A or more Voltage setting: Discaharge: 0.00-30.00V, the minimum step 0.01V Charge: 0.00-18.00V, the minimum step 0.01V Current setting: Discharge: 0.10-20.00A Minimum step 0.01A (Automatic limit current when power is overrun) Charge: 0.10-5.00A Minimum step 0.01A (maximum current is affected by supply current) Mode setting: DSC-CC: discharge current is constant, used to test battery capacity or supply current DSC-CP discharge power is c onstant, used to simulate constant power equipment or test power CHG-CV: constant current constant voltage charging, applicable to test lithium and lead-acid Automatic charging & discharging: support automatic charging-discharge-charging mode, used to test battery capacity Voltage test: 0.000-4.500V (low pressure) accuracy to 0.003V, error ± 0.5% 4.50V-30.00V (high presure) accuracy to 0.01V, error ± 0.5% Current test: 0.10-20.00A, accuracy to 0.01A, error ± 0.5% Capacity test: 10Ah, the resolution of 0.001Ah 10Ah-100Ah, the resolution of 0.01Ah above 100Ah, the resolution 0.1Ah Connection: four-wire detection, voltage and current channel separate wiring, to ensure measurement accuracy LCD display: voltage, current, capacity, time, power, energy test data Computer Online: dedicated USB to TTL serial port (Mini USB port, not an ordinary USB cable) computer control, curve plotting, calibration benchmarking, firmware upgrade, cycle charge / discharge etc.