It depends on the specific model, and other factors such as speed and the type of terrain it’s driven on. First, it’s important to note that Lil’ Quads run on six-volt batteries, while most other Power Wheels run on 12 volts. Ideally,12-volt batteries run about one to three hours on a full charge, meaning the battery’s been charged for at least 18 hours, but no more than 30 hours. However, vehicles with higher speeds and specialized features will drain the battery faster. If the vehicle’s driven over challenging terrain like wet grass, that can certainly have an effect on battery life. As for the battery’s overall lifespan, you should expect a battery to last one to three years on average, but this is dependent on the total number of hours the battery is used.