Traffic UPS


Leveraging PowerGenix nickel-zinc technology, the EnSite Power UPStealth® Battery Backup System is a lead-acid free, energy efficient, intelligent digital battery backup management system designed to power signalized intersections during loss of utility power.

A major challenge for nearly all traffic cabinets is that there is limited or no space available for installing a battery backup system. As a result, most agencies are forced to pay for an expensive external enclosure or piggy-back cabinet to provide battery backup for their intersections. Furthermore, the lead-acid batteries currently used in battery backup systems and other uninterruptable power supply systems are large, heavy, and contain dangerous chemicals that require special handling. Most lead-acid battery backup systems also need costly routine maintenance two to three times per year.

UPStealth® was designed as an alternative to lead-acid battery backup systems, enabling EnSite Power to provide an environmentally friendly product that is completely recyclable with no hazardous out-gassing, corrosion, flammable or explosive characteristics.

EnSite Power spent a considerable amount of time and research choosing the best rechargeable battery chemistry for the Traffic Industry. EnSite Power ultimately selected NiZn for its:

  • High energy density and performance
  • Environmentally friendly material
  • Durability and overall safety of the cell
  • Size and weight
  • Lifespan, which is approximately twice as long as lead-acid batteries

UPStealth® Battery Backup Systems are available in various configurations that allow the intelligent battery to bend around corners and fit into spaces that cannot be accessed by traditional battery backup systems. The innovative Living-Hinge UPStealth® Battery Panel, which is designed with a natural flex, fits between the internal rack and cabinet shell of a primary 170/33X series traffic cabinet. Utilizing the unused space between the internal rack and shell of the cabinet, it takes up no rack space, thus eliminating the need for an expensive external cabinet or piggyback cabinet.

In addition, for NEMA cabinet users, the NEMA UPStealth® Battery Panel can be mounted on the top or underside of the NEMA cabinet shelf. A rack mount version is also available for other Transportation Cabinets.

Compared to lead-acid battery backup systems, UPStealth® has a lower cost of ownership, requires less maintenance, performs several years longer, and eliminates costly hazardous disposal issues and in most cases provide twice the energy in less space.

For more information on EnSite Power and the innovative UPStealth® Battery Backup System, please visit