B&K Precision 8500B Programmable DC Electronic Loads

B&K Precision 8500B Programmable DC Electronic Loads improve upon all aspects of the 8500 series while maintaining dependability and cost-effectiveness. A set of comprehensive functions makes the 8500B units a versatile tool for testing and evaluating DC power supplies, DC/DC converters, batteries, battery chargers, and photovoltaic arrays. The list, transient, automatic test, and battery test modes provide a range of test tools for lab or production line applications. Load behavior can be triggered internally, externally, or remotely from the included application software. B&K Precision 8500B Programmable DC Electronic Loads feature a compact benchtop form factor and operate in constant current (CC), constant voltage (CV), constant resistance (CR), or constant power (CW) mode. For quick system recall, the internal memory enables 100 sets of user-configurable parameters, such as current, voltage, slew rate, and width.


  • Maximum input power 600W
  • CC / CV / CR / CW operating modes
  • 16-bit voltage and current measurement system providing up to 0.1mV / 0.1mA resolution
  • Transient mode up to 10kHz in CC mode
  • List mode function for custom step sequences
  • Supports both SCPI and backward-compatible 8500 series protocol
  • Store and recall up to 100 instrument settings
  • Adjustable slew rate in CC mode
  • Flexible triggering options via front panel, external input, timer, or bus
  • Built-in battery test function, specify cut-off voltage, capacity level, and time
  • Test modes to validate the OCP/OPP protection functions of a power supply
  • Protections include overvoltage (OVP), overcurrent (OCP), overpower (OPP), overtemperature (OTP), including local and remote reverse voltage (LRV / RRV)
  • Remote sense
  • Short-circuit test
  • Analog current control and monitoring
  • 2 thermostatically controlled fans (linear-speed control to minimize noise)
  • TTL (DB9) interface with USB adapter
  • Integrated meter measures voltage, current, and power
  • Rack-mountable unit


  • Performance verification of photovoltaic solar panels
  • CR-LED mode to simulate loading behavior and test LED drivers
  • Fuel and solar cell tests
  • Battery tests and power supply evaluations


  • 150W to 600W power
  • 120V to 500V rated voltage
  • 15A to 120A rated current
  • 2U half-rack form factor

Front Panel

Chart - B&K Precision 8500B Programmable DC Electronic Loads

Rear Panel

Chart - B&K Precision 8500B Programmable DC Electronic Loads


Published: 2019-06-17 | Updated: 2023-06-13