Battery: Start car with HU on okay?

[tracyrick 10+ year member]

So is it bad for my battery to start my car with the HU and heater/air conditioner on? Does it make a difference? My HU feeds into 800 watts of amps, that also come on via the remote wires.

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[helotaxi 5,000+ posts]

Your car will usually turn off the HU and all other accessories when you engage the starter.

 

[HannaS10 10+ year member]

Your car will usually turn off the HU and all other accessories when you engage the starter.

yeah and then once its starts it turns on the other stuff again.

 

[ultimate157 5,000+ posts]

Your ignition switch kills the accessories.