Battery life in NYC averages 3–5 years. By year 4 most batteries are losing capacity even if they still start the car. By year 5–6 you're rolling the dice every cold morning.
A load test (which any auto parts store does free) tells you exactly how much capacity is left. If you're below 75% rated CCA, replace before winter.
We do on-curb battery replacement at $249 / hour service rate plus the battery at retail. Most common group sizes in stock on every truck.
