Quote:
Originally Posted by Notleks24
This maybe a stupid question. But why do these premium car batteries need to be charged? Why doesn't running the car do this.
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Engine operation will charge the starting battery IF the vehicle engine is run long enough. If all you do is short trips the starting battery may never get brought up to full charge. (Not sure how mild hybrids work.) And if the vehicle is not operated for weeks (or especially months) at a time, the various functions of the vehicle requiring continuous battery power will deplete it. Severe temperature extremes will also accelerate self discharge.
I have several automobiles that I do not drive enough to keep a good charge on the battery so I try to put charger on them every week or so.
If your vehicle has an AGM starting battery make sure you get the correct charger. Chargers for FLA batteries do not sufficiently charge AGM's due the difference in charging profiles.