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Yes - now that I can physically trace most of the major cables I would say we have a common setup - which does make sense. ;-)
Yes - now that I can physically trace most of the major cables I would say we have a common setup - which does make sense. ;-)
And everyone so far with the dual battery set up does not have the smart alternator cable connected , just a different way of wiring it up I guess but mine seems to work OK regards charging but have not had the opportunity to test the start assistance when the starter battery is flat. I’ll keep my emergency jump starter with me just in case.
Yes does seem a little odd nothing at all is connected to the consumer out of the smartpass. Perhaps was easier for all vehicles to be wired this way and remains the same, smartpass fitted or not....
I'm being dense - but how would the aux battery charge when the alternator is off?
I'm learning on this as we go, we really need to understand the design philosophy from Ineos and in particular the details of what it has in the BCM/software that essentially does the same thing as the Smartpass loose red wire - which is the initial take I get from @Logsplitter's reply from Ineos.
Hopefully we will get to hear the root cause analysis for @das mo's issues.
Your not being dense. I think the point I was making was that the aux battery would be always take charge from the main battery. But it you want connect the smart alternator fuse, the Aux battery will start taking charge once the car is started.
Yes, if I've correctly identified the feed as I said earlier. The MTA auxiliary fuse box is bottom fed and there's no common busbar, so that's puzzling me.
That doesn’t sound a lot of good then. If both batteries are down to that level or possibly lower for the start battery then not much hope of starting the engine I guess. I wonder if it can be changed to cut off if voltage goes below 12.3 for example, otherwise even if not using the service battery for auxiliary loads it would soon flatten anyway after a few days of pulse charging the start battery. I think I would prefer something like a voltage sensitive relay that disconnects the two batteries or the link between the two can even be disconnected manually although this wouldn’t be compatible with a smart alternator. I need to try and learn more about this set up before possibly being stranded in the middle of nowhere.
Yes that makes sense to me. So do you think that the two batteries are isolated when the engine is not running so that the power in the service battery can be reserved to help start the starter battery if flat.
Where in the manual does it state that the service battery trickle charges the starter battery or was that the Ctek manual and not the Grenadier manual. I’ve searched so much I’m boggle eyed
. But I found this in the Grenadier manual. . “The Auxiliary Battery is connected to the vehicle's electrical system but isolated from the starter circuit. The Auxiliary Battery is used as a safety back-up to support the main battery when required or to provide voltage for specific vehicle systems. The Auxiliary Battery protects the vehicle as it prevents a voltage drop when cranking the engine.” I would like to think that the two batteries are separated when the engine is not running or voltage drops below 12.5 volts. 
The ctek manual does indicate the two batteries are isolated when the ignition is off. But it does also state it will attempt to assist the starter battery if the starter cannot start the car on its own. The assist functionality is most likely insufficient to start the car when the starter battery is severely drained. The way the 120 was designed was for all your ignition off power needs to be drawn from the aux battery. This would draw down your aux battery first not the opposite . Unfortunately Ineos has taken the approach of connecting all power draws from the starter battery, even the power from the aux switch panel. This means the starter battery will always be drawn down first, thus the assist logic would be require.
Trickle charging the starter battery is a feature of the D250SE not the 120. (correction the 120 feature list does show a trickle charging capability as well)Where in the manual does it state that the service battery trickle charges the starter battery or was that the Ctek manual and not the Grenadier manual. I’ve searched so much I’m boggle eyed
Thanks
That’s why I couldn’t find it in the Grenadier manual then
. I thought I was going mad. Thanks for that I’ll sleep easier now.I'd like to think what Ineos has said is correct but....Where in the manual does it state that the service battery trickle charges the starter battery or was that the Ctek manual and not the Grenadier manual. I’ve searched so much I’m boggle eyed
Thanks
Are we able to confirm that if the starter battery is drawn down to 60 or 70% then so to is the aux battery or is the Aux completely separate when the vehicle is not running (and therefore the Aux remains fully charged)?
I’m very confident that what Ineos told me is correct. My vehicle will be in a container for 5 to 6 weeks as of next week on its way to Cape Town that will be a good test as to whether the auxiliary battery will help start the engine. I will make sure the batteries get a good maintenance charge before hand.I'd like to think what Ineos has said is correct but....
This also begs the question.. when adding the D250SE (say for solar input), is the red wire attached to 12volts or not. I'm guessing Ctek will say it needs to be attached. Anyone know?
