The BS-VCD system is designed for use in the high accuracy performance test of rechargable batteries. High accuracy. Accuracy of current and voltage measurement is ±(0.05% FS + 0.05% RD). Each device has 1-8 channel. each channel is equipped battery holder meets the needs of different cells and battery packs. DC internal resistance. Modularization structure Multiple optional working steps. Powerful testing function, including voltage, current, DC internal resistance, and temperature,etc. Sampling rate of current and voltage is 2 data/second respectively; sampling rate of temperature is 1 data /3seconds.