The Leader-Follower battery system typically uses a CAN bus or similar protocol for inter-module communication. The leader module acts as the central Battery Management System (BMS) coordinating charging, discharging, and cell balancing. Data such as individual cell voltages, module temperature, and current flow are transmitted between modules. Error 8x32 indicates a disruption in this communication, preventing the leader module from properly managing the entire battery bank. The system relies on this communication for optimal performance, safety, and longevity. Disruption can prevent NEC 690.15 rapid shutdown features from operating correctly.