How to Use: Wiring mode: four‑wire detection, separate wiring for voltage measurement and current channel Specification: Item Type: Battery Capacity Tester Material: Cold rolled steel Power Supply Mode: DC 19V-20V, current above 3.5A Voltage Setting: Discharge 0.00-30.00V, minimum step 0.01V; charge 0.10-18.00V, minimum step 0.01V Current Setting: Discharge 0.10-20.00A, the minimum step is 0.01A (the current is automatically limited when the power exceeds the limit); charge 0.10-5.00A, the minimum step is 0.01A (the maximum current above 10V is less than the power supply current) DSC-CC: Constant discharge current, used to test battery capacity DSC-CP : Constant discharge power, used to simulate constant power equipment CHG-CV : Constant current and constant voltage charging, supporting lithium battery and lead-acid Automatic Charge and Discharge: Support automatic "charge-discharge-charge" mode to test battery capacity Voltage Measurement: 0.000-4.500V (low voltage range), accurate to 0.003V, error ±0.5%; 4.50V-30.00V (high voltage range), accurate to 0.01V, error ±0.5% Current Measurement: 0.10-20.00A, accurate to 0.01A, error ±0.5% Capacity Measurement: Within 10Ah, resolution 0.001Ah; 10Ah-100Ah, resolution 0.01Ah; above 100Ah, resolution 0.1Ah LCD Display: voltage, current, capacity, time, power, energy and other test data Computer Connection: Dedicated USB to TTL serial cable (MiniUSB port, not an ordinary USB cable), computer control, curve drawing, calibration of measurement benchmarks, device firmware upgrade, cycle charging and discharging, etc Maximum Discharge Power: 85W, 20A within 4.2V, 10A within 8.4V, less than 10A at higher voltage Package List: 1 x Detector 2 x Test Line 1 x Manual Note: This model does not support Ni‑MH, Ni‑Cd charging