АА\ААА batteries powered radio sets

Batteries

— the radio is powered by replaceable batteries of a standard format (usually AA or AAA). This type of power supply is convenient due to the ability to quickly replace a “dead” battery: the process usually takes a few seconds, does not require tools, and spare batteries are sold almost everywhere. At the same time, the power provided by such a power supply is low, and therefore it is used mainly in compact devices with a short range.