A lithium-ion battery pack consists of multiple lithium-ion cells connected in series and/or parallel to achieve the desired voltage, capacity, and power output. These packs are equipped with a Battery Management System (BMS) to monitor and manage cell performance, ensuring safety and longevity. For communication backup systems (e.g., telecom towers, data centers) and UPS systems (e.g., for IT infrastructure, servers, or critical equipment), lithium-ion battery packs provide reliable power during outages.