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Automotive Battery

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VISUAL

Battery Main Failure Mode

Battery Main Failure Mode
FailureType Battery Part Factor of Failure Appearance Check Method
OverCharge Battery all cell 1)To charge Alternator with high voltage
2)Handling negligence (recharging error)
1)Electrolyte Overflow
2)Indicater color: RED
- Exhaustion of electrolyte
- Etc
1)Indicater color : RED
2)Electrolyte Color : Black ,etc
Over Discharge Battery all cell 1)Electric part trouble
2)User discharge (light)
3)Generator, fan belt
4)Long period stop
1)Not Starting
2)Electric equipment
ability weak
1)All cell specific gravity : 1.220/25℃ ↓
2)OCV 12.30V ↓
3)Generater vs battery voltage difference : 0.2-0.3V ↑
Short Special cell Short 1)Not Starting
2)Ability loss of electric equipment
1)Specific gravity : low above 0.05 than different cell
2)When discharge, gassing is not in the special cell
3)When charging, gassing is not and S.G is changed in the special cell
Electrolyte leakage Sealing part
case, etc
1)Heat sealing failure
2)Damage
Electrolyte leakage  
Explosion Exhaust hole 1)Handling negligence
- Flammable
- Pole short
Battery explosion  
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