The life of the battery depends on its usage. The number of kilometers, driving style, charging behavior, and a few other factors impact the battery life. However, on average, Ather batteries are expected to last for 5 years or more, with over 70% capacity. This data is based on our internal testing vehicles and on-road vehicles. We provide a battery warranty of 3 years for unlimited km - the battery will be replaced under warranty if it dips below 70% capacity.