56V Ultracapacitor Modules

Maxwell Technologies 56V series of ultracapacitor / supercapacitor modules provides power during dips and sags in the main power source. In longer-term outages, the modules provide transition/bridge power to a longer-term backup source, such as a motor-generator or fuel cell. For industrial applications, ultracapacitor / supercapacitor modules provide power for graceful shutdown of process equipment.

The modules can last up to 15 years in backup, occasional-use applications. They are designed to fit in standard rack systems with up to 10KW (15 seconds) in 4U height. Two modules can fit in a 19-inch rack, while three can fit in a 23-inch rack.

Maxwell ultracapacitor / supercapacitor modules cost effectively replace batteries in these applications. They are maintenance-free for up to 14 years and entirely non-toxic. The built-in passive balancing system requires no monitoring. An optional overvoltage alarm is available but not required.


  • BMOD0130 P056 B03 56V, 130F, overvoltage alarm


  • UPS systems


  • Up to 14 year DC life
  • 56V DC working voltage
  • Resistive cell balancing
  • Overvoltage outputs
  • High-power density
  • 4U, half-rack package
  • UL registered