Dynamic power source selection, charging, and discharging

A computing device comprising:

• processing hardware and storage hardware;
• energy storage devices that store energy to power the computing device;
• components powered by the energy storage devices;
• electric paths between the energy storage devices and the components of the computing device;
• a controller that controls providing of power from the energy storage devices to the computing device and its components by (i) controlling which energy storage devices are used to power the computing device, and/or by (ii) controlling how much power is drawn from the energy storage devices relative to each other;
• the storage hardware storing a history of usage data, the history of usage data comprising indicia of removal/addition of energy storage devices and/or indicia of connections to external power resources;
• and
• wherein the controller controls which energy storage devices are used to power the computing device and/or how much power is drawn from the energy storage devices relative to each other based on predictions of expected removal/addition of energy storage devices and/or predictions of connections to external power resources, the predictions based on the history of usage data.