Battery Load Unit BLU220T



Discharge test (capacity test) is the only test method that provides a comprehensive insight into battery capacity, and is therefore an essential part of vigorous battery maintenance programmes.


The Battery Load Unit – BLU220T is the stand-alone or a PC-controlled battery capacity test set, based on the state-of-the-art technology. Its design is using the most advanced power electronics solutions with coolers and fans integrated into device itself.

The BLU220T device is lightweight (15,1 kg / 33 lb.) and developed to meet a customer’s wide ranging test procedure requirements (standardized as well as customized). Using the BLU220T device, the capacity test is performed in an accurate, user-friendly way in accordance with the battery testing standards:

  • IEEE 450-2010
  • IEEE 1188-2005
  • IEEE 1106-2015
  • IEC 60896-11/22 and other relevant standards).

Discharging can be performed at:

  1. constant current,
  2. constant power,
  3. constant resistance or in accordance with a pre-selected load profile.
    The discharge test can be conducted even in case a battery remains connected to the load – by measuring the load current during the process.

    The BLU220T device provides the discharge current of up to 340 A and may be applied to battery strings with up to 70,5 V voltage level.

Main Features

  • Lightweight – 15,1 kg (33 lb.)
  • Powerful – discharge power up to 19,2 kW
  • Battery voltage: 6 to 60 V DC (min 5,25 – max 70,5 V DC)
  • Discharge current – up to 340 A DC
  • Battery internal resistance measurement according to IEC 60896
  • Expandable for larger banks using BXL-T extra load units
  • Current measurement range using Current Clamp 0 – 1 000 A DC
  • User – adjustable alarm and shutdown parameters to prevent excessive discharge
  • Testing without disconnecting the regular load
  • Detailed test analysis using DV-B Win software
  • Test resume feature in case of interrupted power supply


Included accessories

  • DV-B Win software, including USB cable
  • Mains power cable
  • Ground (PE) cable
  • Transport case
Recommended accessories

  • Current cables 2 x 3 m 70 mm2 with alligator clamps (A4) isolated 
  • Cable bag
Optional accessories

  • Current cables 2 x 3 m 70 mm2 with alligator clamps (A4) isolated 
  • Sense cables 2 x 3 m with banana plugs + dolphin clip
  • Current clamp 30/300 A power supplied from the instrument with extension 5 m
  • Current clamp 100/600 A with internal battery supply and extension 5 m
  • Adapter for current clamp 30/300 A power supplied from the instrument with banana plugs
  • Cable for external alarm
  • Extension cable for external alarm 5 m
  • Cable for BLU-BLU parallel operation 3 m
  • Transport case for BLU – medium size
  • Canvas Transport case – medium size
  • Cable bag
  • Mains power cable EU 10 A
  • Mains power cable NA 15 A (NEMA 05-15)
  • Mains power cable UK 10 A
  • Mains power cable AU 10 A

DV-B Win

The DV-B Win software is included in the price, and all its updates are free of charge. Using the DV-B Win software a test can be performed and monitored from a PC, and the results can be saved directly to a PC. Communication between the BLU and a PC is achieved through a USB cable. Using the DV-B Win, the results can be arranged and printed for a report in selectable formats as XLS, PDF, Word, or RTF. Also, a possibility of importing other types of data formats (jpg, png, doc) into standardized DV-B Win report is provided, as well as exporting the numerical and graphical results from the DV-B Win into a customizable report. Additionally, the software provides a possibility of setting extra parameters (cell voltage, string voltage, capacity and time) for alarming and terminating the test.



Application Notes

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