BBU Power Supply for AI Server Market by Product Type (AC-DC Hybrid Backup Unit, DC-DC Power Backup Unit, External Battery Pack), Form Factor (Blade Enclosure, Customized Form Factor, Rack-Mount), Power Capacity, Battery Chemistry, Cooling Method, Input Voltage, Mounting Type, Deployment Model, Management Interface, Communication Protocols, Scalability And Modularity, Application, End User Industry, Output Voltage - Global Forecast 2026-2032