power systems for supplying electrical power for telecommunications equipment and reserve energy systems of components for supplying energy as a reserve or backup to a principal supply to equipment requiring a substantially uninterruped source of power comprising one or more of the following; battery chargers, DC/AC converters, batteries, electrical power supplies, electrical buses, battery trays and racks, counterelectro-motive force cell panels, meter and alarm display panels, electrical voltage disk connect, circuit breaker and distribution display panels, electrical grounding and termination bars, electrical buses, electrical fuses and circuit breakers, electrical power board, electrical testing and calibration equipment and computers for monitoring and controlling power systems, all of the foregoing being sold separately and/or together; battery chargers; electrical power supply and distribution boards; electrical panel displays and controllers; uninterruptible electrical display panels, especially for battery power distribution; electrical power supplies; battery trays and racks; counter electromotive force cell panels for use with uninterruptible power supply systems; meter and alarm display panels; electrical voltage disconnect, circuit breaker and distribution display panels; electrical grounding and termination bars; electrical buses; electrical fuses; electrical fuses and circuit breakers; power plant monitoring and control equipment; power plant monitoring and alarm equipment; computers for monitoring and controlling power systems; electrical testing and calibration equipment; electrical power boards; switchgear battery chargers

installation and repair of electrical power equipment for use in the telecommunications industry