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Electrical device which, when energised by a small electrical current, safely switches a larger electrical current.

8 votes
2 answers
1k views

Why a relay frequently clicks when a battery is low?

Shouldn't the starter relay be closed while a car is starting? Why does it open/close frequently when key is turned, making a repeated clicking sound? … Does the relay behave this way only in the low battery case or it clicks always while a car is starting, but clicks are not audible due to the working starter noise? …
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