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K-900 Smart DC Load Bank

K-900 series are your best choice Smart DC load bank with Kongter’s updated solutions. This new series resistive load bank includes a series customized load models that feature rugged design and and excellent performance. They facilitate your work for DC load and battery capacity testing. With different models of DC load bank, it covers a wide range from 12V to 480V nominal voltages with current up to 600A. Its big TFT touch screen with vivid display makes it more user-friendly for setting and operation. Kongter’s new PC software make it easy for remote control, measurement monitoring and report print out.

Same CDL in K-900 DC load bank can also work independently with “String Data Logger” to make another product, BDL-3927 Battery Data Logger using same PC software. For quick test of battery internal resistance or conductance, please refer to BT-301 Battery Condition Analyzer.

K-900 DC Load Bank–general info-Catalog



Optional Cell Data Logger (CDL)
Each CDL is recording voltage of up to 12 cells for all cell types (1.2V, 2V, 6V and 12V). It has wireless communication with K-900 main unit and PC. Kongter also offers customized CDL for non-standard battery types. CDL numbers are easily expandable to cover more battery volumes.

CDL can work with SDL (String Data Logger) without load bank for monitoring of cell voltage, string voltage, temperature and current in the same software.

Kongter battery load bank data logger

Its Connection:
Each CDL is connected with 12 cells of 1.2V, 2V, 6V or 12V. Therefore, different battery systems will require different amount of CDLs.

Kongter Powerful PC Software
All standard load units of K-900 come with PC software. It could remotely control the load bank via wifi and have a real-time monitor for the whole process of discharge, analyze the measurement data and easily print out detailed test report. Same PC software is also compatible for Kongter’s whole series battery test equipment.

Our Advantages 

  • K-900 series load bank have many customized models to meet precise requirement of users from various industries.
  • Its optional data loggers enable a wireless communication with computer. And PC software will control and monitor the whole process of discharge including voltage of EACH cell.
  • Standard discharge function and other functions like assistant discharge, parallel load and monitor for external loads. Compatible with non-Kongter load banks.
  • Rugged, reliable and durable product quality with very competitive price.
  • Timely and professional tech support with precise understanding of customer need


  • Touch screen with easy and user-friendly data setting and operation
  • Optional wireless CDL enables real-time PC monitor during measurement
  • It sets 4 conditions for discharge auto shut-down:
    Discharge time, discharge capacity, string voltage and cell voltage
  • Continued discharge available when previous discharge is stop abnormally
  • Discharge data adjustable during battery discharge
  • Parallel connection of up to 5 units for higher discharge current
  • Assistant discharge to add load to even non-Kongter load banks
  • Can monitor measurement of other load banks or battery charger
  • Accurate data measurement and vivid waveforms of PC software
  • Auto sorting for lag-out batteries during discharge
  • Powerful management software for data analysis and report generation
  • Automatic protection upon over-heating and overload
Power supply1)    AC 220V/110V, 50/60Hz; 
2)    DC (from batteries, optional for some models)
Cell type1)     Standard: 2V, 6V and 12V
2)     Customized: 1.2V or other uncommon cell types.
Discharge voltage range10V-552V
Customized as nominal voltages of 12V, 24V, 48V, 72V, 80V, 110V, 120V, 220V, 240V, 380V and 480V.     
Discharge current rangeSingle load bank: 10A-600A
Parallel load: 10A-3000A (up to 5 loads)
Current is customer-tailored per different string voltage 
AccuracyCurrent: 1%              Voltage: 0.5% – 0.8%
Resolution Current: 0.1 A or 0.5%     Voltage: 0.001 V
Sampling Interval5s –1min
Discharge pattern Constant current discharge 
Display 128*64 pixel, 5” TFT touch screen (resistive screen)
CDL power supply9~36Vdc
CDL measurement range0~15Vdc
Data transferUSB, Wifi (for CDL to load bank and PC) 
CoolingForced air
Operation Temperature0℃~40℃ (32 – 104 °F)           
Humidity 5%~90% Relative humidity
StandardCE marking, EMC standard
Main Unit Dimension2 XS: 200*275*420mm
S: 200*350*570mm
M: 200*425*570mm
L: 300*425*760mm
XL: 300*425*896mm
XXL: 440*725*650mm
XXXL: 440*1025*650mm
Main Unit WeightXS: 11kg (24 lbs)
S: 15kg (33 lbs)  
M: 18 kg (40 lbs) 
L: 33 kg (73 lbs) 
XL: 45 kg (99 lbs) 
XXL: 50 kg (110 lbs)
XXXL: 60kg (132 lbs)

Kongter offers many customized models of battery load bank to fit almost all users of different industries. For telecom, power, forklift and other industries, we have built regular models as below. If you do not find the right model, please kindly contact our sales representative with your detailed requirement.
Kongter load bank order info

Kongter load bank order info

Q: What industries is the battery load bank applied for?
A: Kongter covers various industries with its wide range customer-tailored battery/DC load bank models. It includes telecom, power utility, data center, forklift battery maintenance, industries manufacturing and many others. For details, please download the data sheet with more info. 

Q: Can I test the battery systems in short time?
A: Depending on different regulations, you could alternatively discharge batteries based on C5, C10 or C20. Shorter discharge time will require higher discharge current for the same unit. Kongter also offer some customized load units with high discharge current. For details, please contact us with your requirement. 
For quick test of batteries to pick up weak batteries from whole string, we will also recommend BT-301 Battery Condition Analyzer for measurement of both battery internal resistance and conductance. Test  can be done in seconds. 

Q: How do I record voltage of each cell in the string effectively?
A: Kongter offers optional Cell Data Logger (CDL) for each load bank model for recording voltage of each cell in real time during battery load test. With CDL, you could also use the PC software to monitor all measurement data during battery discharge.

Q: What voltage rating does the CDL support?
A: Standard CDL is designed for measurement of 1.2V, 2V, 6V and 12V cells with connection of up to 12 cells each CDL. Default CDL quantity is calculated based on common cell types of 2V, 6V and 12V. Measurement of 1.2V will require more CDLs for same load bank model. Other non-standard cell types including lithium batteries are optional. 

Q: Can I use PC software for data monitoring if there is no CDL with my load bank?
A: Yes, you can. However, you will not see voltage of each cell. And all measurement data is saved in the load bank automatically even if there is no connection with PC. You could also view the data in load bank during discharge.

Q: If I do not have CDL, what battery type can I discharge?
A: You could discharge any type of battery if there is no CDL as long as string nominal voltage fit your load bank. 

Q: Can the CDL work independently without load bank?
A: Yes, it can work along with SDL (String Data Logger) to make another product, the BDL-3927 Battery Data Logger. It will be using same PC software for data monitoring.

Q: Can Kongter’s load bank work with non-Kongter load banks?
A: Yes, if you have requirement to discharge higher current than max current of non-Kongter load bank, you could use “Assistant discharge” function of Kongter load bank to increase discharge current.

Q: How do I use Kongter’s load bank to discharge at higher current?
A: Besides using another customized load model with higher current, you could also use parallel discharge of up to 5 units K-900 to increase the discharge current.

Q: I am a contracting company, can I have one single load model with wide voltage range for different industries?
A: Yes, Kongter offers load models of DLB-2348 and DLB-2415 with wide voltage range. If you have different requirement, you could also contact us with your requirement. Click HERE for helpful guideline on how to select the right load bank model.

Q: In the datasheet, I see that most load bank models can discharge down to10V. Does that mean that all load banks can discharge in wide voltage ranges?
A: All load banks can discharge as low as 1V. However, the discharge current at 1V will be pretty small for most models. If you have requirement to discharge at higher current in low voltage, you are suggested to send Kongter your detailed requirement including string nominal voltage and discharge current for each string. If you have different strings to discharge, list all of them.

Click HERE for helpful suggestions on how to select your right battery load bank models.
Kongter provide best support for its battery load bank/battery capacity tester, you are welcome to contact us for questions regarding battery load bank.

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