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CBA A2 500W Amplifier



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  • CBA amplifier
  • 6 inch Powerpole® Cable
  • Power Supply Cable
  • Owner's Manual
View Details | Restock Alert. The estimated return to stock date is January 31, 2023.

Note: When using a CBA III unit, Extended Software is required to operate


Perform Fast, High Power Testing

  • Test at 5 times the power with a CBA amplifier in between a CBA and your battery
  • 500 watt discharge with a single amp and a CBA
  • 1000 watt discharge with two amplifiers, a harness and a CBA
  • 2000 watt discharge with four 20X* amplifiers, a harness and a CBA
  • Designed for commercial or industrial use
  • Test a Lithium cell at up to 120 amps / 500 watts with a single amplifier
  • Test a Nickel cell at 160 amps regulated down to .9 volts with a single amplifier
  • Test batteries at or near their current and temperature limits
  • Support for operation with one or more CBA 500 watt amplifiers and CBA V or CBA IV (CBA III units require Extended license)

* 20X amplifiers are a special order item.

Test at Real World Load Conditions

  • Increases 100 watt continuous capability of CBA to 500 watts
  • Discharge rates at up to 500 watts or 160 amps maximum, whichever is higher
  • High voltage testing at up to 55 volts; the equivalent of 1 to 38 NiCad or NiMh cells

Extended Software License Unlocks Features for Serious Battery Testing

  • Programmable automatic duty cycle test with up to 999 second on/off cycle periods
  • Regulated constant power discharge (current goes up as battery voltage drops)
  • Temperature graphing with a recovery time option
  • Ragone power density charting using battery weight (used for performance comparison of energy sources charting energy density (Watt-Hours/kg) vs power density (W/kg))
  • Test-lead resistance voltage calibration utility to give higher accuracy voltage readings right at the battery terminals
  • Enables placement of user notes on graphs

Easy-to-Use Software for Data Analysis

  • User selected battery cell chemistry, number of cells and test current
  • Software recommends safe tests based on user supplied battery information
  • Automatic graph setup and scaling
  • Measures and displays voltage, current, amp-hrs, watts and temperature*
  • Easy overlay comparisons of multiple graphs may be displayed saved and recalled
  • Save, display and print battery test graphs and battery labels
  • Plug and Play high speed USB interface, with easy to use and intuitive Windows® software supplied on USB flash drive

* Requires optional temperature probe

Hardware Requirements


Computer System Requirements

Basic Requirements:

  • A PC with a Pentium 233 or better
  • At least an 800 X 600 graphics card and display monitor
  • 98SE, W2K, XP, Vista®: 32 or 64 bit, Windows® 7: 32 or 64 bit, Windows® 8, Windows® 10, Windows® 11
  • An available USB port


  • AMD or Intel 1.2 GHz or better
  • Better than 800 X 600 graphics and display monitor
  • Windows® XP or newer 32 or 64 bit 4 GB RAM
  • An available USB port (external hubs not supported)

For graph and label printing:

  • Any Windows compatible, laser or ink jet, color or black and white, printer
  • Windows compatible single label printers are also supported


  • Maximum continuous discharge rate: 500 watts
  • Discharge rate amplification typically 10X +- 1%
  • Absolute maximum operating voltage: 55 Volts
  • Maximum discharge rate: 160 amps (3.12 Volts at test start)(Battery dependent)
  • Minimum Voltage for a 160 amp discharge: .9 volts at completion of test (Battery dependent)
  • Supplied with copper bus 5/16 bronze bolt battery connections and plug in Powerpole® CBA connector.
  • On/off/bypass switch. On and over-temperature LED indicators, viewable from across a room.
  • Automatic fan operation senses 1 amp or more current from the CBA. Stays on approximately 5 minutes after test completion.
  • Dimensions (overall): 5.5" H x 6.25" W x 13.75" D.
  • Weight: 134 oz.

Please click here for more information on Powerpole® Connectors.

Quality Declaration

Product designed, tested and used by ham radio operators onsite.


CBA A2 500W Amplifier

  • CBA amplifier
  • 6 inch Powerpole® Cable
  • Power Supply Cable
  • Owner's Manual
CBA Amplifier Diagram

CBA Amp with Charge Controller Diagram
Powerpole® is a registered trademark of Anderson Power Products.
Powerpole® Connector Features & Benefits
  • Genderless Housings: Provide simplified assembly and minimize the number of components
  • Stackable Modular Housings: Available in four sizes to right size your connection need
  • Connection Versatility: Contacts for wire, PCB, or busbar all fit into the same housings
  • Low Resistance Connection: Silver or tin plated contacts inside housings that strongly force the contacts together
  • Color Coded Housings: Help ensure that connectors are assembled and mated correctly
  • Self Securing Design: Stainless steel springs create a robust force between the contacts that holds the connector in the mated condition, but allows it to be quickly disconnected.

Anderson Powerpole® Connectors and General Installation Tips

Powerpole® Connectors
  15A 30A 45A
Amps (UL) Per Pole 0 to 55 0 to 55 0 to 55
Volts (UL) Per Pole 600 600 600
Amps Continuous 15 30 45
Wire Gauge (AWG) 20 - 16 16 - 12 14 - 10
Polarized Housing
PDF Files
Data Sheet
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