Abstract: It is desirable to facilitate maintenance of a battery of a vehicle. Ideally, any non-optimal action performed on the battery—for instance excessive charging—should be identified such that an appropriate recommendation for a battery maintenance operation can be provided. For instance, a user of the vehicle may be instructed to charge the battery less often. Thus, in an embodiment, a device such as an Electronic Control Unit (ECU), will monitor one or more operational properties of the battery. Thereafter, the monitored property is evaluated by the ECU to determine an effect that the monitored property has on the lifetime of the battery. Based on this evaluation, the ECU performs an action with aim to prolong the lifetime of the battery, such as instructing a user of the vehicle to perform a particular action.