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    FST-840CT Battery Discharger &Capacity Tester

    ? Wide voltage range battery discharger: 12V to 280V

    ? 5.7 inch LCD touch screen for easy operation and showing various parameters real time

    ? Selectable discharge mode: constant current/power / resistance

    ? 4 adjustable stop points and multiple alarm designs to control the discharge process intelligently

    ? Support RS232 real time monitoring by PC or USB download data after discharge

    ? PC software for capacity evaluation and report generation

    ? Optional wireless modules for 1.2V/2V/6V/12V cells voltage real-time measuring


    Although battery resistance testing methods are improving and very popular, battery discharge test still is the most accurate and reliable method for actual capacity evaluation of battery groups. Because only constant current discharge can perfectly simulate the working status under loading for batteries, power supply departments in many companies and utilities keep the periodic discharge testing in their maintenance management.

    Because the DC power systems in various industrial utilities are using different voltage level battery groups (24V, 48V, 110V, 120V, 220V, 240V etc.), and most of professional users hope to find an unattended and automatic instrument to simplify discharge process, the battery discharge tester with intelligent designs and super voltage variability for almost all battery types would be preferable.


    Wide Range

    FST-840CT can support 10-300V battery groups, the application of FST-840CT includes:

    Battery Nominal Voltage Max Discharge Current

    240 V / 220 V 60 A

    120 V / 110 V 120 A

    96 V 120 A

    48 V 120 A

    24 V 120 A

    12 V 60 A

    Multiple Adjustable Stop Points

    FST-840CT offers 4 adjustable points for test stop points to avoid excessive discharge:

    Stop Point Setting Range

    Group Low Voltage 0-250.0 V

    Discharge Time 0-99 Hour 99 Min

    Discharge Capacity 0-9999 AH

    Cell Low Voltage 0-15.00 V

    FST-840CT also offer selectable quantity of cellswhich voltages below the stop point, this design could help you to locate more lag batteries in once constant discharging.

    Selectable Discharge Modes

    FST-840CT provides 3 dischargemodes for different test requirement:

    Discharge Mode Range

    Constant Current 0-120 A

    Constant Power 0-14 Kw

    Constant resistance 0.16Ω-∞

    5.7 inch Touch LCD Display

    Super big size touch LCD can display all real time data and graphs andsupport the click operations directly, humanized input method and menu designs simplified operating process.

    Presetting Function

    The presetting function for discharge parametersprovide 8 locations for setting up all discharge parameters in advance, this design can skip the setting procedures for the same discharging, simplified the operation and speed up the test.

    Internal Memory

    ? FST-840CT can save several independent discharge records automatically without Laptop monitoring, non-volatile internal memory guarantee the data security even in unexpected shutdown.

    ? The menu interface provides some management operations like reviewing, deleting, downloading to PC by USB disk or RS232.


    Optional wireless cells voltage monitoring

    ? Wireless modules for cells voltage measuring are available for 1.2V/2V/6V/12V batteries voltage monitoring during discharge test.

    ? Each wireless module can monitor 4 batteries simultaneously. Comparing with the traditional cable voltage measuring method that each module only can monitor 1 battery, the new wiring operation is much easier.

    ? With proper number wireless modules, main tester can real time scan and display the voltage data of each battery during the discharging, and display the histogram of all batteries to follow the battery voltage tracks in whole discharging process.

    ? Intelligent judge program: FST-840CT can identify the situations that the battery voltages reach the threshold value or the signal missing by manual mistake. Avoiding manual interruption in the discharging, this revolutionary program makes the test stable and smooth.

    ? FST-840CT also supports cable modules for special requirements.

    Multiple Protections & Alarms

    Malfunctions LCD prompt beep warning

    Input over-voltage √ √

    Reverse polarity √ √

    Overload √ √

    Overheat √ √

    FST-840CT provides ample protective measures for various abnormal situations during discharge. Automatic termination, LCD prompt and beep warning would assist users to make proper treatments.

    Extendable & Compatible

    Connecting with clamp current, FST-840CT cooperate other types in FST-CT series or any other load units, and clamp current can count external current in.


    ? Support data downloading and analyzing through real time communication or USB memory devices

    ? The software interface includes: battery voltages curve and bar chart, battery resistances bar chart, group voltage curve, current curve, capacities histogram, data form and so on.

    ? Powerful capacity estimating function, the software can predict the capacity of each battery in the tested group.

    ? The software shows the data by various ways like bar charts, curve, and form. And users can magnify or minify any windows to read more details.

    ? Automatically create EXCEL data report, it’s so convenient to send or download the data.


    Single unit for 1 battery group

    Single unit for 2 battery groups

    Parallel co-work for 1 battery group


    Discharge Ranges

    Voltage range current range

    10-15V 0-60A

    15V-60V 0-120A

    86-150V 0-120A

    190-280V 0-60A

    Current measurement

    Internal current range 0-120A

    Accuracy &resolution ≤±0.5%, 0.1 A

    External current range 0-600A(optional current clamp)

    Accuracy &resolution ≤±1%, 0.1 A

    Voltage measurement

    Group voltage range 0-300 V

    Accuracy &resolution ≤±0.5%, 0.1 V

    Cell voltage range 0-15V

    Accuracy &resolution ≤±0.5%, 0.01 V

    Power Supply

    Power supply voltage 220 V AC (-20% to +30%)

    Frequency 50/60 Hz

    Power consumption 350W(max)

    Communication & Storage

    Communicate port USB/RS232

    Internal memory 8Mbit Flash

    CE Certificate

    LVD standards 2006/95/EC:EN 61010-1:200

    EMC standards 2004/108/EC Annex II:

    EN 61000-6-1:2007

    EN 61000-6-3:2007

    EN 61000-3-2:2006+A2:2009

    EN 61000-3-3:2008


    Operation temperature -5 to 50o C

    Storage temperature -40 to 70o C

    Humidity 5% - 95% RH

    Altitude below 4000 m

    Working noise <60 dB


    Main tester 230 x 370 x 670 mm

    Carrying case 280 x 640 x 750 mm

    Weight 24 kg (main tester only)

    42 kg (included all accessories and carrying case)

    0.3 kg (each optional wireless module)


    Carry case 1 x 280 x 640 x 750 mm, 13 kg

    Power cable 2 x 3 m cables 50 mm2

    AC power cord 1 x 3 wires x 1 mm2

    Software 1 x CD-ROM

    RS232 wire 1

    User manual 1

    USB disk 1 x 2GB

    Current clamp 1 x 200A or 600A (Optional)

    ??Ordering Information

    Type Description

    FST-840CT Battery discharge & capacity tester

    FST-AS PC analysis software

    FST-200CC 200A current clamp

    FST-600CC 600A current clamp

    WX-2612 Wireless module for 2V/6V/12V

    WX-12612 Wireless module for 1.2V/2V/6V/12V

    YX-12612 cable module for 1.2V/2V/6V/12V

    Shaanxi Foresight Electronics Co., Ltd.

    18/F, Foreign Xi’an Trade building No.68 Middle sector South Huancheng Road Xi’an China

    Tel: +86-29-68995523 Fax:+86-29-87261871

    Load Bans

    Feel free to contact us with all your questions

    Company Contact:

    • Phone: 008602968995523

    • Address: Xian Foreign Building No.68.Middle sector Huanch, XIAN, China

    • Email: Email

    Published date: September 7, 2012 -

    • Business Description: Foresight Electronics Co., ltd. is the high tech enterprise specially engaged in
      R&D and production and marketing of all kinds of optical communication networks,
      backup power supply maintenance test apparatuses and other electrical equipments etc.
      It has passed authentication of ISO9000 2000 qualityu management system、
      and also with Batch of skillful and hard working aftermarket team for users providing strong guarantee.

      Foresight products cover UPS/Stationary battery test equipment、
      AC Load bank、data transmission testing、
      optical communication testing etc.

      We are dedicated to maintaining a lasting relationship with our customer by having a clear
      understanding of their needs and best interests." Dedication、Innovation、Good Faith、Win win" is
      our business desicions and actions of value orientation.

      We provide our customers with the best quality service and products with honesty and
      integrity to achieve the highest persionalized service

      The technologies and products of Foresight Electronics has been obtained wide applications
      in major chinese telecom carries and electric power system, peotroleum and coal system,
      financial system, transportation sys tem, police system and large scale industry and mining enterprises and
      other communications network markets with high price/performance ratio and excellent servcies of our company,
      and there are a lot of products to export abroad and obtain favorable reputations of clients.

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