Optimal One-Dimensional Free-Replacement Warranty Period for AGM Batteries

The objective of this study is to analyze the suitability of the age-based warranty model and a mileage-based warranty model for absorbent glass mat batteries (AGM) for the automobile industry. Battery life expectancy can be assessed and described by a combination of different terms such as: state of health (SOH), deep of discharge (DOD), state of energy (SOE) and state of charge (SOC). However, using actual data from the field, the implementation of reliability engineering and statistical modeling we aim to calculate optimal limits for warranty policies that minimize warranty costs. The outcome of this research will enable battery manufacturers, motor companies and warranty managers in decisions making strategies for cost savings in warranty projects without negatively affecting customer satisfaction.