Metal detectors powered by AA batteries

AA batteries

— replaceable elements of a standard size, also known as "finger". Their main advantage is the possibility of quick replacement — it is enough to stock up on fresh batteries in advance. It is also worth noting the variety of such elements — they are available both disposable and in the form of batteries, and there are many brands available on the market that differ markedly in price and quality. The main inconvenience of this option in the case of metal detectors can be called the fact that quite a lot of batteries are usually required — about 6 – 8; and they are usually not included in the package.