Overview Accurate voltage and current measurement is critical for battery cell grading and quality classification in lithium battery production. The XWELL XW-5V300A16CH Prismatic Battery Cell Grading Machine provides voltage measurement with 0.1mV resolution and control accuracy of ±(0.5‰ reading + 0.5‰ full scale), combined with current measurement at 1mA resolution and matching accuracy. This measurement performance, implemented through a four-wire test interface across 16