Questions tagged [battery]

A device that harnesses a controlled chemical reaction to produce electricity; usually carried as an emergency power source in case the aircraft's main generators fail.

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What is the difference between an aircraft main battery and standby battery?

I have just seen a diagram where it shows both a main battery and a standby battery however I am unsure what the differences are? I thought the main battery was there as an emergency power source / APU starting etc.. so what is the standby battery…
Jono
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