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B1.Testing the BatteryB1 Using Recognised Digital tester - Batteries without removable vent plugsWe recommend that a test is carried out with a recognised digital tester, for example Midtronic or Bosch Type 121 testerIn the absence of specialised testing equipment perform a high rate discharge test (go directly to Procedure B2 )B1If testing battery on vehicle, you must remove surface chargeWith engine off, switch on lights for 1 minute then switch off all electrical loads and leave for 2 minutes prior to testingBefore testing, ensure battery terminals are clean and tester leads are in good conditionMIDTRONICSBOSCHLeave tostand for4 hourminimumChoose the correct SAE testing modeEnter 70% of the SAE Rating of the battery(shown on the label of battery*)* For Marine, Leisure Batteries use4x 20 hour ratingChoose the correct SAE testing modeEnter 65% of the SAE Rating of the battery(shown on the label of battery*)* For Marine, Leisure Batteries use4x 20 hour ratingLeave tostand for4 hourminimumRECHARGEBATTERYPress the Test KeyTypically Midtronics reading are reduced by4A for every °C loss in temperatureLatest models - automatically adjust for temperature.For Earlier Midtronic 415 tester use * keyPress the Test Key*Note Data differs considerably from Midtronic tester,hence reason for use of 90% rating for testingsuspect warranty batteriesUse arrow keys to adjust for temperatureRECHARGEBATTERYRESULTSRESULTSGOOD BATTERYGOOD BATTERYBattery is fully charged and ready to useBattery is fully charged and ready to useREJECT CLAIMREJECT CLAIMGOOD + RECHARGEGOOD + RECHARGECharge battery then ready for useCharge battery then ready for useREJECT CLAIMREJECT CLAIMCHARGE + RETESTCHARGE + RETESTBattery TestingCharge battery and test again If same resultsappear after charging thenREJECT CLAIM*REPLACE BATTERYBattery has lost performance due toexternal factorsREJECT CLAIM**BAD CELL BATTERYBattery is defective => ACCEPT CLAIMReplace under warranty terms and conditionsIf repeated failures from one fleet customer, furtherinvestigation of battery overdischarge is requiredTEST NOT POSSIBLE / CHECK CONNECTIONNo display - check tester leads contactCheck Voltage with digital multimeter as batterycould be deeply dischargedSwitch off all electrical consumers when testing abattery fitted to a vehicle.Multimeter OK , but not Midtronics, then disconnectbattery from car and retestNO DISPLAYCharge battery and test again If same resultsappear after charging thenREJECT CLAIM*REPLACE BATTERY / UNSERVICEABLEBattery has lost performance due to external factorsIs Start capability less than 60% thenREJECT CLAIM** (using 90% of label rating)REPLACE BATTERY / CELL SHORT CIRCUITBattery is defective => ACCEPT CLAIMReplace under warranty terms and conditionsIf repeated failures from one fleet customer, furtherinvestigation of battery overdischarge is requiredTEST NOT POSSIBLE / CHECK CONNECTIONNo display - check tester leads contactCheck Voltage with digital multimeter as batterycould be deeply dischargedSwitch off all electrical consumers when testing abattery fitted to a vehicle.Multimeter OK , but not Midtronics, then disconnectbattery from car and retestNO DISPLAYRecommendedEquipmentA voltage meter tocheck Open CircuitVoltageA recognised branddigital tester (egMidtronics)A variable high ratedischarge tester tocheck/confirm thebatteries ability to startthe vehicleA hydrometer to checkacid specific gravity andconditionDespite GOOD CONTACT and RECHARGINGCheck Voltage with digital multimeterIf Voltage = 0 volts ACCEPT CLAIMDespite GOOD CONTACT and RECHARGINGCheck Voltage with digital multimeterIf Voltage = 0 volts ACCEPT CLAIMA good quality chargerto enable dischargedunits to be rechargedNote* The battery has been subjected to excessive charge/discharge whilst in use. This may be a malfunction of the vehicle charging system, as a result of excessive electricalconsumers, infrequent vehicle usage or extreme operating conditions (eg Mini cabs service or delivery vehicles) These are not Manufacturing Defects.** The battery can no longer deliver performance compatible with the original specification, the battery has lost performance due to outside factors, overcharging, undercharging,deep cycling, wear and tear. These are not Manufacturing Defects.510