175 Ah Battery Backup Unit | GBU-2U

175 Ah Battery Backup Unit | GBU-2U

Product Information

The Guardian Battery Unit GBU-2U is a 48V 23” rack-mountable Lithium ion Battery Backup Unit (BBU) designed to be used in conjunction any modular DC Power System. The GBU Series of 48V batteries have been designed for data center and telecom applications as a replacement to Lead Acid batteries. This Modular Energy Solution can be scaled to meet any mobile switching center need.

The patented Energy Balance Technology (EBT) provides internal balancing among the BBU modules connected in parallel. The EBT ensures consistent voltage and current delivery from the entire system of connected modules, which maximizes runtime and power delivery. This technology allows the energy storage rack to be simple and self contained.

Remote management via the Modbus, over RS-485 or Ethernet via the Unipower GCC Controller with PowCom™ software provides immediate access to performance and alarm information.

Lithium Nickel Manganese Cobalt (NMC) chemistry provides the best energy density and the smallest footprint in the industry.

Features and Options
  • 2RU High variant with 175Ah of capacity
  • 23-Inch Rack Mounting
  • Current Capacity: 100A
  • Operating Voltage: 48Vdc
  • Scalable, connect multiple units in Parallel
  • RS-485 Communication Ports
Electrical Parameters
Lithium-Ion Chemistry Lithium Nickel Manganese Cobalt (NMC)
Nominal Voltage 46.8V
Voltage Range 42-54.6V
Nominal Capacity 175Ah (8190Wh)
Continuous Discharge Current 100A
Pulse Discharge Current 115A for 300ms
Quiessentient Current Draw 1mA
Min/Max Charge Current Range 3-100A
Cell Balancing Passive, 300mA
Maximum in Parallel Operation Contact Green Cubes
Physical Parameters
Terminals Four threaded receptacles, M6 bolt pattern
Dimensions, case 21.4″ X 29″ X 3.4″, 544mm X 737mm X 86mm
Weight 63kg (139 lbs)
Communications and Control
Serial Communication ModBus over RS-485
Operating Humidity 5% to 95% non-condensing
Charge Temperature Range 0°C to +55°C
Operating Temperature Range -5°C to +45°C
Storage Temperature Range -40°C to +60°C
Thermal Management Variable Speed Fan
Airflow Direction Front to Back
IP Rating IP 20
Approvals and Safety
Agency Approvals UN 38.3, IEC 62619, UL 1973 Pending
Radiated and Conducted Emission EN55032 / CISPR 22 Class A
Calendar Life @ 80% SOC Up to 20 Years
Cycle Life @ 80% SOC 800 Cycles
Battery Modes Battery modes – Ship and active
Shipping Classification Class 9