I bought a used 2003 Civic Hybird that had only 37000 miles on it from a dealer 150 miles from where I live. I took the car into Ed Morse Honda in So Fl for service and had them do the 36000 mile service since I did not know if it had been done. 3000 miles later I noticed my battery would loose 50% of its charge just sitting over night. I took the car back to Ed Morse and 3 days later they had a new battery in my car at no charge. These batteries have an 80,000 mile warranty so any dealer should take care of the problem. I was very pleased.