Battery design to last only 2 years or less. It's purposely being set it out because the manufacturer want you to buy new one. They will out of business if you did not change the battery. If yo have ,ore than 2 years battery, it's your bonus. There is nothing to do with the battery but the people that maintain the car. All those complainant is only show off like clever but for me stupik fella. Spoilt just change that all, no need so be so problematic on this issue. Every car has their problem.