SOC estimation ensures users have accurate information about available battery capacity, utilizing sophisticated methods like ampere-hour counting, open-circuit voltage measurements, Kalman filtering, and increasingly advanced machine learning algorithms. The battery Pack consists of 104 single cells, the specification is 1P104S, the power is 104. 499kWh, and the nominal voltage is 332. Battery Rack (Two battery clusters) NO. Outside View of 5MWh Battery Container. A Battery Management System (BMS) is an intelligent electronic controller that monitors, protects, and optimizes battery performance. The unit is designed to be fully scalable to meet your storage requirements. In this guide, we'll explain what the BMS does, why it's one of the most important components in any solar battery, and what you should look for when choosing a battery for your home or business.