English Dictionary

sand battery

noun

(electronics, historical) An unspillable electrochemical battery whose cells use electrolyte soaked sand – typically used to test telegraph cables at sea.

The sand battery is a new type of electronic device.

意味（1）

(electronics, historical) An unspillable electrochemical battery whose cells use electrolyte soaked sand – typically used to test telegraph cables at sea.

意味（2）

(military, historical) A sand fort equipped with an artillery battery, frequently found in coastal defense, usually having organic infantry attached.

意味（3）

(thermodynamics, industrial planning) A thermal storage battery which uses sand as the storage medium.