TECHTONGDA Battery Capacity Tester & Analyzer DC Load Tester Constant Current Discharge 0.10-20A Charging 0.10-89V 4-Wire Measurement for 12-72V Lead-Acid & Lithium Batteries AC 100-240V

Parameters Input power: AC 100-240V Cut-off voltage: 9-88V, stepper 0.01V Current range: 0.10-20A, stepper 0.01A (to discharge 12V battery packs the max current is 10A) Voltage range: 0.10-89V, stepper 0.01V Capacity detection: <10Ah, 0.001Ah; 10-100Ah, 0.01Ah; >100Ah, 0.1Ah Voltage accuracy: 0.5%±0.01A Current accuracy: 0.5%±0.01A Gross weight: 20.94LB Outer packaging size: 21.65*14.57*11.02'' Product number 239699

• [Discharge and Charge in One] This battery capacity tester measures remaining battery capacity for 12–72V packs, integrating constant current discharge (DSC) and charging (CHG) in one device.Current range is 0.10-20A (to discharge 12V battery packs the max current is 10A) and voltage range is 0.10-89.00V. It accurately assesses capacity and can connects to an external charger to recharge depleted batteries, handling both testing and maintenance.
• [Four-Wire High-Precision Measurement] The dc load tester uses a professional four-wire method, it separates the current loading circuit from the voltage sampling circuit, eliminating errors from clamps and wire resistance. Voltage and current measurement accuracy reaches 0.5% ±0.01A.
• [Capacity-Adaptive Resolution Switching] The tester automatically switches resolution based on battery capacity: <10Ah displays to 0.001Ah, 10-100Ah to 0.01Ah, >100Ah to 0.1Ah, balancing precision for small capacities and display stability for large capacities.
• [Computer Connectivity] The battery capacity tester can be connected to a computer via a dedicated USB-TTL cable to unlock extended functions, including graphing, calibration, firmware upgrade and test cycling.
• [with Cooling Fans] The dc load tester is equipped with cooling fans for stable operation.