Potential energy battery
A gravity battery is a type of energy storage device that stores gravitational energy—the potential energy given to an object when it is raised against the force of gravity. An old and simple application is the driven by a weight, which at 1 kg and 1 m travel can store nearly 10 newton-meters [Nm], joules [J] or watt-seconds [Ws], thus 1/3600 of a watt-hour [Wh], while a typical 18650. The earliest form of a device that used gravity to power mechanical movement was the , invented in 1656 by. Large scale (PSH) is the most widely used and highest-capacity form of grid-energy storage. From 1870 to 1930, the term "gravity battery" was used to describe a collection of popular battery types where gravity was used to keep the chemical constituents separate based on their respective densities.
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