Unfortunately there is no golden rule that can be applied to give an estimate on run time for any particular RC as there are too many variables to consider. While one person might get 10 minutes, another might get 15 minutes or more with the same RC set up depending on how it's driven and the terrain it's being driven on. However, once we determine a run time estimate for an RC using a particular battery, we can then estimate the run time with different or higher capacity batteries.