Keys in the Ignition - Audio Runtime

Deviant Tubs

Senior Member
T6 Guru
Dearest Hive Mind,

I've got a rather wonderful 'Signature' system care of the Audio wizards at @Absolut5 in my T6.1

Setup is Audison Amp under the driver seat with a belter of a JL Sub under the passenger seat. Hertz speakers dotted around.

It's a superb system, so much so it seems a shame not to be using it when parked up (no not in Tesco car park on a Saturday night) but out camping or at bus socials.

When parked I can manually fire up the Discover Media Head Unit, get the music playing - happy days. But the head unit has an auto shut down after a few minutes - which makes sense. Wouldn't want to accidentally kill the battery.

That said I want to be able to run the music and take advantage of the system for at least an hour (maybe two). So my new tactic is to leave the key in the Ignition turned to the first ON position only. Electrics fire up, leave it there. Lovely!

But then I started remembering my formative years and my old man warning me about leaving the Ignition in the on position and how it would knacker the points.

I'm pretty sure that's old tech these days, but I'm not expert. Does anyone see an a issue arising from doing this? Will leaving the vehicle electronically 'ON' but not the engine running knacker components?

Which brings me on nicely to my next question... Runtime?

Has anyone got the faintest idea how long a relatively new (2022) starter battery would run a an audio sound system?
An hour/Hours/Many hours?

If I run it for too long do you get a helpful warning to save the battery? Or does it just suddenly die and you're stranded in the Tesco car park.. Ahem... I mean field :p

Anyone's thoughts majorly appreciated.

Cheers guys
 
I don't think it will knacker anything these days but like you I was told the same and it's engrained now so I don't risk it just to be safe rather than sorry.
If you've got Carista or similar maybe you could run live data on the battery voltage next time just to give you an idea.
 
I have the same setup in my Caravelle and run it for hours parked up with ignition switch in first position with no issues, just make sure if you have auto lights to set them to off so DRL's are not on for the duration
 
I don't think it will knacker anything these days but like you I was told the same and it's engrained now so I don't risk it just to be safe rather than sorry.
If you've got Carista or similar maybe you could run live data on the battery voltage next time just to give you an idea.
Yes now that's a good idea - I've got the Victon Bluetooth Doodarr for Solar and Battery charger. That'll tell me voltage. What do you recon? Running to 12.5v at the very lowest?
 
I have the same setup in my Caravelle and run it for hours parked up with ignition switch in first position with no issues, just make sure if you have auto lights to set them to off so DRL's are not on for the duration
Perfect mate - That's great good hear you run it no problemo.

Great shout on the Auto Lights. I wouldn't have thought of that
 
best get yourself a jump-pack, for when you do run your battery flat - which you will do.


have a look here:





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FYI you can extend your run time by having a leisure battery fitted and using that to power your kit.
 
At the moment I've got a Lifos 105 but I'm pretty certain the setup doesn't feed back into the Starter Battery. It's on a Victron DC/DC charger.

Am I right in thinking you can add a trickle charger to the starter batt off Solar MPPT?
 
Just remember if you have keys in the ignition make sure one of you is legal to drive if near anything regarded as a public road.
 
Hopefully if you're parked up on a campsite with the tunes going full beans, your fellow campers share your taste in music :whistle:
 
You get a warning on the infotainment system when the battery is too low so simplest way is buy a NOCO and try it yourself.
 
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