EVO-AT Series: Microprocessor Controlled SCR Battery Charger

The “EVO” Series battery charger is a SCR-based float battery charger for stationary/utility applications. Its next-generation design incorporates all the quality and reliability of the original AT charger series and offers a built-in health and diagnostics system.

  • The EVO is designed to help with compliance to NERC PRC-005 standards and other utility industry requirements.
  • The charger’s open architecture design allows for flexible operation including user-configured alarm relays and field-upgradable firmware.
  • Its built-in health system continuously runs self-diagnostics to provide status notifications, alerting you of any issues in real-time.
  • Pressing the Health button initiates a system diagnosis of all parameters and components to verify that the charger is operating properly.


  • Universal main control board
  • Alarm suite with LED indicators (AC failure, low DC voltage, high DC voltage, DC output failure, positive ground fault, negative ground fault)
  • Common alarm LED indicator (for all alarms including: low AC voltage, high AC voltage, end of discharge, low DC current)
  • Programmable summary relay contact that can be configured to indicate any or all alarm conditions
  • Float and multiple equalize charging models with LCD display indication
  • Manual equalize timer (0–999 hr.)
  • AC line automatic failure equalize timer (0–255 hr.)
  • AC on indicator
  • 0.5% digital metering for Vdc and Adc measurements
  • Graphical LCD display with LED backlight
  • AC input and DC output circuit breakers
  • Password protection for security
  • Multiple processor design for exceptional reliability
  • Input and output MOV surge suppressors
  • Battery open alarm
  • Reverse polarity protection diode
  • Baked epoxy powder coating in ANSI 61 gray
  • Plug-in socket for removable memory card used for event logging and firmware upgrades
  • Health system and intelligent self diagnostics
  • Standard output filter per NEMA PE5

Available Options

  • Battery eliminator DC output filtering per NEMA PE5
  • Medium and high AIC breakers
  • Auxiliary alarm relay board
  • Copper ground bus
  • AC lightning arrestor
  • Fungus proofing (tropicalization)
  • Static proofing
  • Serial communications modules (RS-232/RS-485)
  • Ethernet communications module
  • Modbus and DNP3.0 commuication protocols
  • Battery temperature compensation
  • Fan control contactor
  • NEMA 4/12 type enclosure w/ fan
  • Relay rack mounting
  • Floor mounting stand
  • NEMA Type 2 drip shield
  • Forced load share
  • AC voltmeter
  • AC ammeter
  • Cabinet heater assembly
  • Custom drawing package w/ optional CAD and PDF files
  • Remote shutdown
  • Battery discharge alarm


Charger Model Number EVO-AT Series
Output Voltages (V) 24, 48, 130 and 260
DC Output (Amps) 6 – 25
N56 W16665 Ridgewood Dr. Menomonee Falls, WI 53051
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