Hey guys so as the title says, I have a SAINSMART 16 Chanel Relay Board, I got 12volts from my battery going to the relay Board, It then powers up the arduino UNO and bluetooth module (hc-06) I am just wondering if they would kill the battery? I am assuming no as It is literraly only powering 2 leds…

Would an arduino and relay board kill a car battery?

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