The Volvo battery in this car is 6 years old which probably means that the original battery was 6 years old when it was replaced. What's the normal lifespan of the Volvo battery? I'm having absolutely no problems with cranking, but I do carry a battery booster in the trunk. My son has an '01 S60 that still has what is probably the original battery. Should I be replacing these before winter? This seems like pretty good service because I usually get 4 years from a 5-year-warranty O'reilly battery. Should I go back to Volvo brand? Thanks.
Marlin
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