Battery energy storage systems (BESSs) are critical for integrating renewable energy, supporting data center growth, and enhancing grid performance, with AI/ML approaches enabling efficient, chemistry-flexible state monitoring and health prediction. AI/ML based approaches enable rapid and accurate state monitoring. Battery energy storage systems (BESS) use rechargeable battery technology, normally lithium ion (Li-ion) to store energy. The energy is stored in chemical form and converted into electricity to meet electrical demand. However, it is essential to model in detail the complexity of non-linear. We provide full, turnkey high-voltage grid integration, leveraging our world-class portfolio of substations, transformers, and Blue HV products including switchgear.