3THE EVOLUTIONARY CHAIN OF BATTERY TESTING TECHNOLOGIES First Generation - Physical Load Voltage TesterSecond Generation - Electronic Battery Testers/ Simulated Load VoltageThird Generation – Dynamic Load Voltage Tester
4THE 1ST GENERATION: PHYSICAL LOAD VOLTAGE TESTER BCI Automotive Battery Test Load ProcedureConnect the voltmeter and load test leads to the battery terminals. Be sure that the load switch test is in the “OFF” position.Apply a load test equal to ½ of the CCA rating of the battery at 0oF (-17.8oC) for 15 seconds.Remove Load.Estimate or measure battery temperature and compare voltage readings with the “Voltage Chart”.If the Voltage is less than the minimum specified, replace the battery.Voltage ChartEstimated Electrolyte TemperatureMin. required voltage under 15 seconds70oF (21oC) & Above9.6 V60oF (16oC)9.5 V50oF (10oC)9.4 V40oF (4oC)9.3 V30oF (-1oC)9.1 V20oF (-7oC)8.9 V10oF (-12oC)8.7 V0oF (-17.8oC)8.5 V
5PROBLEMS WITH 1ST GENERATION TESTERS Battery must be at least 75% charged (12.45V). If not, battery must be charged manually (battery charger).Time consuming.Imprecise equipment can give false results.Too many tools.Has to “rest” (cool off) between tests.Technician has to know and follow the “recipe” to perform test.Puts a physical load on the battery, with risk of shortening its life.
6THE 2ND GENERATION: SIMULATED LOAD VOLTAGE (SLV) TESTING TECHNOLOGIES Based on the BCI load test, this is today’s mostpopular type of automotive battery testing.The two major technologies used are:Conductance testingMicro-load testing
7MICRO LOAD TECHNOLOGY EXPLAINED Small load is applied to battery, which drops initial voltageLooks at battery voltage recoverySmall load is applied a 2nd time to battery, which drops voltage againFinal look at battery recovery leads to determination of battery statusNote: Some testers perform a 3rd Micro Load test.
8CONDUCTANCE TESTING EXPLAINED Conductance is a measurement of the battery's ability to produce current. It is a measure of the plate surface available in the battery, which determines how much power the battery can supply.The tester creates a small signal that is sent through the batteryMeasures a portion of the AC current response.Determines the battery condition.
9POSITIVE ASPECTS OF 2ND GENERATION BATTERY TESTERS Easy to useWork very well with fully charged batteriesWork very well with batteries out of vehicleFastAvoid most drawbacks of first generation testersDo not put physical load on batteriesExcellent tool to manage battery stock (battery rotation)
10PROBLEMS WITH 2ND GENERATION BATTERY TESTERS Affected by all other loads applied on the battery (Not recommended to test battery if still connected to vehicle’s battery terminals/ cables)The greater the discharge, the less reliablethe test result - Will give “Charge and Retest” test results on great majority of discharged batteriesEasily fooled by surface charges
11AUTOMOTIVE BATTERY TESTING The 4 Factors That Influence Battery Test ResultsBattery TemperatureBattery SizeAge/ConditionState Of ChargeAll these factors have to be measured to correctly determine the battery statusBattery State of ChargeInitial VoltagePercentage of charge12.66 Volts100 %12.45 Volts75%12.24 Volts50%12.06 Volts25%11.89 VoltsDischarged
12“CHARGE AND RETEST”Fact: All battery testers try to determine the battery condition by measuring the internal resistance. Of the 4 factors determining internal resistance, the state of charge resistance is the only parameter that can be influenced (by charge). It has such a high influence when the battery is discharged that it must be nullified for an accurate result.High internal resistance created by discharged battery (light blue) overwhelms other conditions.Test result = “Charge & Retest”The internal resistance is the sum of these 4 conditions.
13THE 3RD GENERATION: DYNAMIC LOAD VOLTAGE TESTING ELECTRO-PRO V14
14ELECTRO-PRO V14: HISTORY The Electro-Pro V14 is a result of years of development & field testing by battery testing experts, battery manufacturers and governmental R&D laboratories.
15DYNAMIC LOAD VOLTAGE TESTING EXPLAINED The Electro-Pro uses high frequency scanning to measure and perform digital signal processing on voltage, charge acceptance and battery condition simultaneously while the engine is running or the battery is charging.This enables it to determine accurately the condition of all batteries including completely discharged batteries.
163RD GENERATION: TECHNOLOGY EXPLAINED Pulsed impedance testing uses a very high frequency load pulse on a battery while the engine is running or the battery is charging to directly measure its internal resistance.The frequency is high enough that any parasitic loads that may be draining the battery do not influence its readings.The high frequency and the digital signal processing is advanced enough that the readings it makes are not even affected by an alternator charging a battery.Uses the battery’s internal resistance and other parameters to calculate its condition.Can accurately assess the condition of a completely discharged battery in a test that takes up to 4 minutes. With a partially discharged battery, the test is considerably shorter (30 sec.)All tests yield a usable test result. No results of “Charge & Retest”.
17DYNAMIC LOAD VOLTAGE TESTING EXPLAINED 4) When tester has gathered enough information from the charge acceptance versus battery condition graph, it makes an extremely accurate projection of what the battery’s condition will be when fully charged, using proprietary algorithms.3) Tester monitors charge volts.1) Through the amps probe, the tester monitors the charge acceptance.2) Tester begins to determine what the battery’s condition will be when fully charged (at least 9.6V).
183 TESTS IN 1 - STARTING/BATTERY PARASITIC AMPS DRAIN IMPORTANT: Tests not only the battery condition but also the two most common sources of problems for a discharged or defective battery:Charging system (Alternator/Regulator)Parasitic Drain
19DYNAMIC LOAD VOLTAGE TEST Quick test (30 sec. normally up to 4 minutes for flat batteries)Needs 1 volt in battery to perform test.Menu driven testTests and give you a test result every single time for all batteries, even bad/discharged/flat/shorted cell/ high resistance/sulphated batteriesTests battery condition, alternator/regulator, parasitic drain and terminal/clamp connection in same test.Customer does not come back for battery replaced unnecessarily (when bad alternator or high parasitic drain not tested)Complete printed test result (battery condition, alternator/regulator and parasitic drain)Battery stays in vehicle when testedWarning if there’s a chance of creating electrical damage to vehicleNo rest (cool off period) between tests.User friendly.Does not put physical load on battery.
20THE ONLY COMPLETE AUTOMOTIVE ELECTRICAL SYSTEM DIAGNOSTICS TOOL Battery Simulated Load Voltage TestManaged Mode (Battery, Alternator and Parasitic Drain) TestStarter Motor TestAlternator/Regulator TestFuel Injector TestCurrent Measurement/Amps ProbeAutomotive Digital MultimeterRPM & Dwell MeterTHE ONLY COMPLETE AUTOMOTIVE ELECTRICAL SYSTEM DIAGNOSTICS TOOL
21STATISTICAL ANALYSISDownloads last 250 test results directly from tester to PCProvides detailed info such as battery CCA, alternator, post/clamp voltage drop and parasitic drain condition and measurementsTime and Date stamp for each testExports easily to Excel spreadsheet
22CASE STUDY 1: AUTOMOTIVE BATTERY TESTERS COMPARISON FEATURING: 2 Automotive 2nd Generation Battery Testers The Electro-Pro V Used Automotive Batteries, randomly selected
23During the charging process, this battery exploded.. While the other testers’ initial message was “Charge and Retest”, the Electro-Pro message was: “Shorted Cell-Jump Start Caution”.SAFETY ISSUE
27RESULTS – BATTERY VOLTAGE VERSUS “NO USABLE TEST RESULT”
28CONCLUSIONS ALL TESTERS WORK WELL ON FULLY CHARGED BATTERIES BELOW 10.6 VOLTS (THE MAJORITY OF BATTERIES THAT WILL NEED TESTING) , 2nd GENERATION TESTERS ONLY GAVE RESULTS OF “CHARGE & RETEST”.ELECTRO-PRO V14 GAVE A USABLE TEST RESULT 100% OF TIME, EVEN DOWN TO LESS THAN 2 VOLTS
29THE ONLY COMPLETE AUTOMOTIVE ELECTRICAL SYSTEM DIAGNOSTICS TOOL Battery Simulated Load Voltage TestManaged Mode (Battery, Alternator and Parasitic Drain) TestStarter Motor TestAlternator/Regulator TestFuel Injector TestCurrent Measurement/Amps ProbeAutomotive Digital MultimeterRPM & Dwell MeterTHE ONLY COMPLETE AUTOMOTIVE ELECTRICAL SYSTEM DIAGNOSTICS TOOL