Battery discharger analyzer

The battery discharger will allow a controlled discharge of the battery while analyzing the voltage and discharge current. Being the most common constant current discharge, the equipment is programmed for constant current discharge precisely while keeping the battery voltage under control. After the test is complete, thanks to its data download port, the user will be able to generate a report on the status of the battery capacity.

Model: BDX

Producer: Bassi

Country of origin: Italy

The BDX is an automatic battery discharger/analyzer, designed to test the efficiency of industrial batteries of any type, voltage, and capacity.

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Key features

High frequency IGBT regulator, featuring constant current discharge of the battery.
Rugged construction for maximum reliability in heavy duty industrial applications.
Compact and easily portable.
Standard models for battery voltages up to 600Vdc.
Single units with parallelable design, for unlimited total discharge current.
Intelligent electronic protection system (includes soft start, battery polarity reversal and overtemperature).
Programmable digital board, microprocessor controlled.
Can operate with batteries of any type.
Digital display (battery voltage and current, time, capacity discharged, programmed values).
Integrated Data Logger, PC interface (RS-232 or USB).
Dedicated PC software TrendCOM for data acquisition and analysis, automatic generation of test reports, export capability to external spreadsheets (MS Excel, Openoffice Calc, etc...).
CE certified.
UL / CSA certified.
ISO9000 Quality control compliant.


This equipment can be programmed to discharge the battery with a precisely controlled constant current, adjustable from zero to the maximum rated value, while keeping the battery voltage under control.

While the discharge is in progress, the control board measures the total capacity (Ampere-Hours) discharged from the battery. When the battery voltage reaches the minimum programmed value, or when the maximum programmed test time is reached, the BDX shuts down automatically, while the measured parameters remain available to the user.

The BDX is very simple to use and does not require training. The programming of the test requires less than 2 minutes and the operation is completely automatic.


An active circuit prevents any arcing between the connectors when the battery is being connected. If a battery relates to reverse polarity, the BDX does not start and no current flows.

When the BDX is powered, an automatic test of the control logic and power electronics is performed in less than 10 seconds. In case of components failures, the BDX remains in a safe, stand-by mode.

While the discharge is in progress, it is not necessary to leave a PC always connected to the BDX, because the integrated Data Logger has enough memory to save the entire discharge curve. At the end of the test, it is possible to download the data from the BDX to the PC in seconds. The standard connection interfaces are serial (RS-232) and USB. Wireless interfaces are available on request.

TrendCOM is a powerful, dedicated software that extends the capabilities of the BDX. It offers the opportunity to generate different plots of the discharge curve:
- Battery voltage [V]
- Discharge current [A]
- Discharge power [kW]
- Capacity discharged [Ah]
- Energy discharged [kWh]
Many functions are available, and very simple to use it is possible to generate test reports with plots and comments automatically, to export the test data to external spreadsheets (compatible with Microsoft Excel, Open office CALC and others), to save a complete test to a single file and send it by email etc...

When two or more BDX units operate in parallel, it is possible to download all the data to TrendCOM, and to merge them into a single, complete test report. This feature gives the opportunity to achieve an unlimited discharge power, by connecting an unlimited number of BDX units in parallel.

During the operation, the external parts of the cabinet remain cold (max temperature rise is 10°C), for maximum safety for the user.

The BDX can be moved easily and safely on any floor, and can operate without problems in any industrial environment.

AC Input
Standard Voltage
Input voltage range: 85 – 135 o 180 -250Vac
Single phase
Maximun powe: 250W
Frequency: 50/60Hz
Standard models
Model code
Voltage range
Current range
External diemnsions
325 x560 x550 (alto) mm [por unit]
2 mm steel.
Four wheels kit for easy moving.
Forceed cooling by controlled fan.
Digital display
Battery voltage (Volts)
Battery current (Amps)
Time elapsed (hours.minutes)
Programmed minimum battery voltage (Volts))
Programmed maximum time of discharge (hours. Minutes)
Capacity discharged (ampere-hours)
Buttons and controls
Three buttons (SET, +, -) for programming and control.
Two potentiometers for current regulation (Coarse – Fine regulation).
Maximum discharge time
48 hours
Pc interface
RS-232, USB Interface, PC software (TrendCOM) for data acquisition, analysis and printing.

Complete product details

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