1. Storing a battery on a concrete floor will discharge them. Wooden container Porous materials Sealing method Battery Myths

2. Driving a car will fully recharge a battery. Alternator rating System load & charge current availability Engine idling, stop-starts, weather ambient Battery Myths

3. A battery will not explode. Charge inefficiency Water decomposition Explosive mixture – 4.1%H2 Improper venting High temperature Improper topping up External /Internal sparks Battery Myths

4. A battery will not lose its charge sitting in storage. Self discharge 1% to 25% High temperatures High humidity Arrhenius Effect Battery Myths

5. Test the alternator by disconnecting the battery with the engine running. Dynamo vs Alternator Similar to voltage stabilizer Electronics Computerization Data acquisition systems Battery Myths

6. Pulse chargers, aspirins or additives will revive sulfated batteries. Not proven Different theories Effect of Sodium sulfate Effect of ligands Battery Myths

7. On really cold days turn your headlights on to "warm up" the battery up before starting your engine. High current May discharge battery further Useful in very cold climates - Thawing Battery Myths

8. Car batteries last longer in hot climates than in cold ones. Effect of temperature on life Effect of temperature on capacity Arrhenius factor for life determination Battery Myths

9. Charging Cables or an Auto Jump Starter will start your car. cables rating No of jump starts Diesel Engine vs Petrol Engine cranking current Cold weather Battery Myths

10. A larger capacity battery will damage my car Higher capacity More starting cycles Higher CCA / CA Alternator rating Hood space economics Battery Myths

11. Car batteries have memories. Memory Effect Ni-Cad Lead acid Battery Myths

12. NiCad batteries have memory Cell with crystalline formation. New nickel-cadmium cell. Restored cell Battery Myths

13. Bad batteries will not harm the charging system or starter. Stress on charging system Premature failure of electronics Voltage stabilizer effect Latent damage on electronics parts to be checked Battery Myths

14. The battery with the highest CCA rating will last the longest. Battery design CCA vs life vs capacity Surface area of plates Battery internal resistance Battery Myths

15. Cranking Amps and Cold Cranking amps are basically the same thing. CCA – 0 dig F CA – 0 dig C CA > CCA ~ 30% + Battery Myths

16. A longer warranty means a better battery. Cranking current Design Materials Process parameters Application Electronics Charging system economics Battery Myths

17. "Maintenance free" batteries never require maintenance. H2O to H2 + O2 Recombination Effect of Temperature Topping up Battery Myths

18. Sealed Gel and AGM (absorbed glass mat) batteries are dangerous. Gas generation Operating pressure Sealing valve operation Explosive mixture External parameters impact Battery Myths

19. Sealed batteries do not need to be vented. Gas generation Gas release Valves Explosive mixture Ventilation requirements Battery Myths

20. While Nominal voltage is 2 Vpc why actual varies Electrolyte SOC SOH Battery Myths

21. A cell reaching a voltage of 2V mean it is fully charged? Electrolyte Electrolyte strength [sp. Gr] vs SOC Battery Myths

22. Why the voltage drops on connecting to load? ( Discharge) Electrolyte Electrolyte strength [sp. Gr] vs SOC Discharge current vs SOC vs time Ragonne curves Battery Myths

23. Can the battery be discharged to Zero volts? Electrolyte conduction Discharge rate vs ionic mobility Battery Myths

24. Then up to what cell voltage discharge can be sustained. Rate of discharge Battery rating C20, C10, C5 Application Cut-off voltage Battery Myths

25. What is the effect of deep discharge? Sulfation Battery charging Stress due to expansion Battery Myths

26. Why is the operating Sp.Gr. Is always recommended between 1.220 to 1.280 in flooded batteries. Electrolyte resistance Application ambient Battery Myths

27. Why battery grade acid & distilled water is recommended for use in batteries? Electrolyte resistance Impurities & effects ambient Battery Myths

28. Besides the load applied what factors cause voltage drop in a battery? Electrolyte volume Electrolyte strength Internal resistance due to mechanical parts

29. Why topping up is always done with distilled water & not acid? Over charge Water loss Role of electrolyte Battery Myths