It transforms batteries from dumb devices into a cloud-based and smart energy storage system. It supports features such as voltage boosting, hybrid use, peak staggering, antitheft, and remote O&M. In the digital era, lithium-ion batteries (lithium batteries for short) have become a crucial force in energy transition considering the advantages of high energy density, 1 long lifecycles, and easy deployment of intelli-gent technologies. Over 10 million UPSs are presently installed utilizing flooded, valve regulated lead acid (VRLA), and modular battery cartridge (MBC) systems. This paper discusses the advantages and disadvantages. This marks a significant milestone in telecom energy storage solutions, advocating for high-quality lithium battery adoption to enhance efficiency, reduce carbon footprints, and increase operational resilience in telecom networks worldwide. The ultra-lean structure enables 1 blade per site while keeping reliability, helping cut TCO and carbon. Under TTCL Project PH8, Huawei 2025 is implementing cabinet installations for rural sites. Each cabinet is equipped with: • BBU (Baseband Unit) – for site operation and connectivity. • Breakers with different capacities – to.