Common Causes of Premature Battery Failures
|Loss of electrolyte||Overheating or overcharging||Engine maintenance and alternator output correction|
|Deep discharges||Leaving the lights on||Immediate recharging|
|Misapplication/use of under rated battery||False economy; inappropriate brand||Replacement of battery|
|Undercharging||Loose alternator belt; spent carbon brush||Belt tightness adjustment; repair/ replacement of alternator.|
|Excessive vibration||Loose hold-down clamp||Clamping adjustment|
|Acid contamination||Use of tap water||Replacement of battery|
|Corrosion||High overcharge||Use of batteries with expanded plates|
• Reduce parasitic (key off) load to 120mA or less
• Parasitic load is the cumulative load produced by electrical devices (clocks, computers, alarms) that continue to operate even after the
engine has stopped.
- Loads in excess of 120 mA indicate the presence of extraneous loads that discharge the battery prematurely.