Floating battery

(Mil.)

a battery erected on rafts or the hulls of ships, chiefly for the defense of a coast or the bombardment of a place.

floating battery

[¦flōd·iŋ ′bad·ə·rē] (electricity) A storage battery connected permanently in parallel with another power source; the battery normally handles only small charging or discharging currents, but takes over the entire load upon failure of the main supply.

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