power pack

American  

noun

Electronics.

1. a device for converting the voltage from a power line or battery to the various voltages required by the components of an electronic circuit.

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power pack British  

noun

1. a device for converting the current from a supply into direct or alternating current at the voltage required by a particular electrical or electronic device

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Etymology

Origin of power pack

First recorded in 1935–40

Example Sentences

The alert added that people should "consider gathering torches, batteries, a mobile phone power pack and other essential items you already have at home", in case of power cuts.

From BBC

Each morning, I receive links to a plethora of stories about fires caused by these power packs.

From Seattle Times

Instead, we need to ask whether lithium-ion power packs — typically used in consumer electronics and electric vehicles — should be used for such energy storage at all.

From Seattle Times

Bring a portable power pack to keep phones charged.

From Seattle Times

Separating yourself from the power pack, as Judge is doing, is something that really hasn’t happened since Ruth’s days, which we will get to.

From Washington Post