I just replaced an original battery for my Acura RDX. Only warning was several clicks on two previous starts. I should have taken it someplace for replacement at that time. On the third time, no start, and a call to the auto service who jumped the car. I had AutoZone replace the batter with their best Duralast. When the red cover was removed over the positive terminal it was totally corroded. AutoZone did the replacement and their was a lot of serious acid cleanup involved in the tray. My battery was about $140. The AGM batteries such as Optima was over $200. My problem was not replacing the battery at the 3 year point.
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