Winston 12 Volt Convertible Car User Manual

Initial Print Date: 5/01 Revision Date:Subject PageBattery Construction 4Battery Types

10The BatteryCommon Battery Terms• Ah -Amp Hour CapacityThis rating is derived from discharging a fully charged battery at a constant amp draw for 2

11The Battery•ElectrolyteThe mixture of sulfuric acid and water. 35% sulfuric acid, 65% water.•Specific GravityThe measurement (by weight) of the volu

12The BatteryBattery TestingThere are four steps to follow in testing an automotive battery:• Inspection• Removal of Surface Charge• State-of-Charge T

13The BatteryInspectionVisual inspection is important for the detection of obvious problems:• Loose Generator Belt• Low Electrolyte Level• Corroded Ca

14The BatteryFor non-sealed batteries, check both specific gravity (SG) in each cell with a temperaturecompensated hydrometer and battery OCV, without

15The BatteryBattery MaintainenceElectrolyte LevelIf battery electrolyte level is allowed to drop substantially, the gas volume inside the batterygrow

16The BatteryBatteries that are fully discharged should be charged according to the following table.The best charging method is to SLOWLY recharge the

17The BatteryBattery FreezingA fully charged battery can be stored at sub-freezing temperatures with no damage. Thebattery is protected from freezing

Vehicle In Storage, Battery Disconnect Switch Left In The Vehicle.Since the battery disconnect switch is left installed and in the “OFF” position the

19The BatteryNote:If the battery voltage drops below 11.6 v for three days or more the battery must bereplaced before delivery to the

2The BatteryThe BatteryModel: AllProduction Date: AllObjectivesAfter completing this module you should be able to:• Explain the battery components and

20The BatteryBattery Maintenance FlowchartVehicle Received at BMW centerQuality Certification IShowroom StorageCondition 1 Condition 2Quality Certific

21The BatteryBattery ReplacementBatteries determined to be defective through testing procedures should be replaced usingthe following guidelines.• Rec

22The BatteryWorkshop HintsSafety Tips• Proper Clothing:-Always wear a face shield or safety goggles.-Plastic gloves can prevent acid burns to hands.•

23The BatteryWorkshop Exercise1.Vehicle Model:Record OCV and Battery Ratings:Perform Battery Test:Step A:Step B:Step C:Step D:What was the State-of-C

3.Vehicle Model:Record OCV and Battery Rating:Perform Battery Sulphation Test:Is this battery sulphated:A voltage reading during this test of 15V indi

25The BatterySpecial Battery SystemsSpecial battery systems are broken into two groups:• Vibration Compensating Battery Systems• Dual Battery SystemsV

26The BatteryDual Battery SystemsE31 (850i):The dual battery system on the 850i was introduced to handle the higher level of electron-ic technology w

27The BatteryBattery Isolation SwitchThe Battery Isolation Switch provides the vehi-cle with separate battery systems for the vehi-cle circuits and th

28The BatterySafety Starting• In response to a discharged condition of the vehicle circuit battery, the isolation switch closes to momentarily boost

29The Battery

3The BatteryAll things electrical start at the Battery

30The BatteryCharging Mode (in the workshop)The isolation switch monitors starter battery voltage during key off conditions and contin-ues monitoring

31The BatteryWorkshop Exercise1.Vehicle Model:Access battery isolation switch through Diagnosis:Though Component Activation, check status of disconnec

32The BatteryClosed Circuit Current Draw TestingIncreased closed-circuit currents may occur permanently or intermittently and cause thebattery to

33The BatteryPerforming Closed Current Draw Test• Select proper measuring device (DISplus, MoDic or DVOM)-Remember amperage draw in excess of 10A will

34The BatteryWorkshop Exercise1. Vehicle Model:Perform Closed Current Draw Testing:Record current at:Initial:5 Minutes:10 Minutes:16 Minutes:2.Vehicle

35The BatteryReview Questions1. What functions does the battery provide?2. What is electrolyte?3. A battery rating of 425CCA indicates what?4. What fo

36The Battery17.What is the maximum current flow the battery isolation switch can withstand?18.When does the battery isolation switch allow the vehicl

4The BatteryThe BatteryPurpose of the Automotive BatteryThe battery is the primary EMF source in the automobile. In addition the battery performsthe

5The BatteryBattery CaseMost battery cases and their covers are made of polypropylene. The case is divided into sixsections or cells, shaped similar t

6The BatteryElementsIn the most common method of construction, a stack of alternate positive and negativeplates are formed with separators bet

7The BatteryBattery TypesThere are at least three types of the Lead-acid batteries that are currently used in theAutomotive Industry.Le

8The BatteryHow The Battery WorksDischargingBatteries don’t store electrical energy, they store chemical energy and convert it to electri-cal energy d

9The BatteryChargingApplying voltage to the battery from an external source such as the generator or batterycharger reverses the chemical action in th