3911C     Battery Performance Checker (12V Constant Current)     Features     Accurate constant current test shows available ampere hour and % capacity. Test mimicks manufacturers tests. Tests all battery types including 14.4v lithium ion batteries. Simple operation, easy to use, no training required. Very portable, powered from battery being tested         The 3911C has been designed specifically to help non-technical personnel to easily determine the condition of batteries in both field service and workshop situations. No technical knowledge is required ! The 3911C contains a fully automatic program which discharges the battery under test and measures its ampere hours and % capacity. To test a battery, simply connect a charged battery, choose the battery from the preprogrammed list or enter the battery Amperehour ( Ah) value. Press the enter button and the automatic test sequence begins. That’s all there is to it ! The constant current discharge test allows the user to test the battery to the manufacturers specifications and accurately measure the amperehour capacity available. If the optional printer is used, a full battery discharge graph and a comprehensive test report of the battery test can be printed. The 3911C is a quality product, designed and built in the UK and comes with a full 12 month warranty.     Battery performance checker .... HOW IT WORKS The 3911C tests the actual capacity of a battery by discharging the battery with a precision constant current load, the same way that manufacturers test batteries. As the discharge test proceeds, the amperehours removed from the battery are measured, along with the run time of the test. The battery continues to be discharged until the battery’s on load voltage falls to the end voltage setting . This voltage can be set by the user but is automatically set if the battery being tested is chosen from the pre loaded battery list. When the battery reaches the end point voltage, the discharge ends automatically and the test results are displayed and saved. The date and time of the test are automatically recorded with the test results. During the discharge, circuits monitor the battery’s discharge voltage for signs of weak or defective cells and if detected, a warning is given at the end of the test and on the printed test report. Defective or weak cells within a battery reduce the battery’s on load voltage even though the battery may well provide a reasonable amperehour or run time result. At the end of each test, the ampere hours measured and run time the battery achieved, are shown on the front panel lcd display. If a battery was selected from the preprogrammed list or an Ah setting entered, the results also show the battery’s approximate percentage performance ( compared to that of a good battery ) A comprehensive battery discharge voltage characteristic can be printed using the optional thermal printer which shows the battery’s voltage during the discharge test. Customised and special voltage versions of the 3911 are available, contact our sales office or your local distributor for full details. Applications: Testing batteries used in:- Golf trollies Electric wheelchairs Battery scooters Power tools Garden equipment Battery powered machinery Fire alarms Security alarms UPS systems Battery backup systems Emergency lighting Specification Battery voltage 12 volt (polarity protected) Battery type Lead Acid, Lithium (14.4v),Nicad, NiMH Battery range 2.0 - 200 Ah Power Source Battery being tested Case Yellow powder coated aluminium Connection Via croc leads Size 65 (21⁄2”) H x 150 (6”) W x 257mm (10”) D Weight 0.8 Kg ( 1.7 lbs) Test sequence Constant current discharge ( fan cooled load) Discharge current 0.2A – 20A Display 4 x 20 line LCD User interface Via 3 front panel push buttons Results Shows Ah capacity, runtime,% capacity, start volts, end volts, discharge current , voltage plot of discharge Outputs Thermal printer Serial o/p to optional thermal printer     Ordering Information   The simple and accurate way to check battery performance. 3911C Battery tester Printer Interface Operating Guide Order Code: 3911C   Optional Extras Auto Recharge option. - a socket is added to the 3911 into which the user plugs a suitable charge (not supplied). The battery then automatically recharges at the end of the test. (Order Code: autoRECHARGE) Auto Cycle option. - uses plug in charger as per autoRECHARGE. This option allows the user to automatically cycle a battery. User can set number of cycles from 0-999, recharge time, rest time and minimum capacity to end test. (Order Code: autoCYCLE) Printer - Quality 40 column serial thermal printer. Prints comprehensive report of battery condition. (Order Code: EPT1) Printer paper - Refill thermal paper roll, box of 10 rolls. (Order Code: PTP1) 3911 case - A tough plastic carry case. (Order Code: 3911case) 3911 carry bag - A soft carry bag. (Order Code: 3911softbag)       Easy to use No technical knowledge required. Tests Lead Acid, Lithium Nicad & Ni MH batteries Adaptable test, works with all current battery types Tests wide range of batteries Tests batteries from 2 to 200 Ah. Remembers the last 40 tests With a stroke of a button the last 40 tests can be recalled & reprinted with test date and time record. Cell Fail Detection Software monitors for faulty cells during the discharge test Comprehensive test report Optional printer available to print full test results & discharge curve No mains power required Powered from the battery being tested. Light weight, robust and portable Powder coated aluminium case     Click here to receive more information about the 3911C

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