The battery estimate is based on recent activity. So if you just started up it might update as you use it. The life can vary dramatically based on what you are doing. If you are doing anything CPU or GPU intensive the life will be really short. The longest life will be achieved at low brightness, wireless & bluetooth off, all background/system tray apps closed, and doing something like reading a document.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…