Which of the following is NOT a form of energy associated with batteries?

Batteries primarily store and convert energy through chemical reactions, which is expressed as chemical potential energy. When a battery is functioning, the chemical potential energy is transformed into electrical potential energy, allowing the battery to power devices that run on electricity. Additionally, some of the energy released can be converted to thermal energy due to internal resistance during the flow of current.

Mechanical energy, on the other hand, is associated with the motion or position of an object and is not directly generated or stored in a battery. While batteries can power mechanical devices, the energy itself does not take the form of mechanical energy within the battery system. Hence, identifying mechanical energy as not a form directly associated with batteries is accurate.