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Meaning of battery backup | Babel Free

Noun CEFR B2

Definitions

A battery installed in an electrical device to maintain power to the device during a power outage.

uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

battery booster battery cage battery cell battery charger battery electric multiple unit battery electric vehicle