Project Description

Product Overview

Discharge testing batteries is the only verifiable method the capacity of your batteries. LB 3980 DC Load Bank delivers a programmable, constant current load for your testing needs. Whether you are load testing for capacity, performance, acceptance or other, LB 3980 provides you an economical complete package solution. Increase employee and battery system safety with PER CELL monitoring and standard built in auto-shutdown features. To suit a variety of industries and diverse applications, LB 3980 offers over 60 standard models to fit your exact needs at the best price.

  • Small weight, compact, convenient for onsite test

  • 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

  • Parallel connection of two units for higher discharge current

  • Can work with other load banks for assistant discharge

  • Can monitor measurement of other load banks or battery charger

  • Accurate data measurement and vivid waveforms

  • Auto sorting for lag-out batteries during discharging

  • Safe circuits avoids damage to battery during measurement

  • Automatic protection upon over-heating and overload Thermal cut-off and automatic overload protection

  • Intelligent & powerful data viewer, capable of thousands battery data management. You can view your data & analyze on PC & phone and download report to excel anytime

DAC (Optional Accessories):

LB 3980 DC Load Bank come with an optional DAC package allowing the voltage of EACH CELL to be wirelessly monitored and recorded during discharge. The DAC package allows the user to evaluate the health of each cell and replace only the cells that require replacement-saving time and money by significantly reducing labor hours and replacement cost. One DAC could monitor 12pcs 2v cells or 4 pcs 6v/12v cells, you only need to change the wiring

Produce Model Reference:

*Custom models available upon request

Loab Bank Model Discharge Voltage & Current
Discharge 24V, 0-300A
Discharge 24V, 0-400A
Discharge 24V, 0-500A
Discharge 24V, 0-100A and 36V, 0-100A
Discharge 24V, 0-300A and 36V, 0-300A
Discharge 24/36/48V, 0-300A
Discharge 24V, 0-200A and 48V, 0-200A
Discharge 24V, 0-300A and 48V, 0-300A
Discharge 24V, 0-300A and 48V, 0-600A
Discharge 24V, 0-600A and 48V, 0-600A
Discharge 48V, 0-100A
Discharge 48V, 0-150A
Discharge 48V, 0-300A
Discharge 48V, 0-400A
Discharge 48V, 0-500A
Loab Bank Model Discharge Voltage & Current
Discharge 48V, 0-100A and 125V, 0-100A
Discharge 48V, 0-200A and 125V, 0-200A
Discharge 48V, 0-300A and 125V, 0-300A
Discharge 48V, 0-100A and 240V, 0-100A
Discharge 125V, 0-100A
Discharge 125V, 0-200A
Discharge 125V, 0-300A
Discharge 125V, 0-400A
Discharge 125V, 0-100A and 240V, 0-100A
Discharge 125V, 0-150A and 240V, 0-150A
Discharge 240V, 0-150A
Discharge 220V, 0-200A
Discharge 380V, 0-50A
Discharge 380V, 0-100A
Discharge 480V, 0-100A

How to discharge batteries

1.  Chose the right Load Ban Model, plug it to battery string accordingly, then turn on it and click”Discharge”

2. Click”DIS test” (Discharge Test) to next step

3. Set the battery string No.

4. Set “Strg volt”(Battery String Voltage), “Cell volt” (Battery Cell Voltage), “Cell Qty” (Total Battery Quality) and “DIS I” (Discharge Current)

5. Set discharge test automatic stop condition, “Strg end U”(String Voltage end), “Cell end U” (Battery Cell Voltage end), “DIS Cap” (Discharge Capacity end) and “DIS time” (Discharge time end)

6. Set to”+”, if battery No.1 connect to bus bar positive; set to”-“, if battery No.1 connect to bus bar negative

7. Click “Yes” to start your discharge test

View the LB3980 test & analyze data on PC & Mobile

  • Go to the link with web browser Chrome (, create/login with your own account.

  • After login, create company>station>group, then upload the test date of each battery to specific group the battery belongs to

  • Then you could view the battery test and analyze date online anytime, or you could also “download” it into Excel