Tripp Lite by Eaton External 48V 4U Battery Pack for select UPS Systems (BP48V48RT4U)Tripp Lite BP48V48RT4U External 48V 4U Battery Pack for Select UPS Systems The BP48V48RT4U is a purpose built external battery pack designed to dramatically extend the runtime of compatible Tripp Lite and Eaton branded UPS systems. Engineered for reliability in demanding data centers, server rooms, and network closets, this shallow depth, 4U rack mount battery solution integrates seamlessly with your existing infrastructure to help protect critical