Engine battery charging using leisure battery?

[Dellmassive]

Correct from solar only. (On a ctek d250sa)

No, smart pass wont help.

You need a seperate charger for the starter battery.......

Either a reverse charger or separate mains charger.

 

[Dellmassive]

Eg....

Battery Chargers - How I Did It -

Battery Chargers - How I Did It - So its that time of year again, cold, rainy. . . . . . . flat battery =[ This time we look at Battery Chargers. Our vans will most likely come with a AGM style starter battery, for this type of battery we need a "Smart Charger" . . . . but what does this...

www.t6forum.com

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[Dave F]

Ok thank you I’m going to buy this and just charge it up .
Cheers

 

[Dave F]

I’m also going to get this at 3.3m do I can connect to the battery and then fit it behind the drivers seat so I can see how much charge is in the battery.
I can Aldo them plug the charger into it and into a socket in the van and then plug the van in it also means when I’m on hookup I can charge/ trickle charge the battery on site if required.

 

[Lukefx]

@Deaky I've Just added proper solar and the votronic trickle charger for the starter battery. Running off the load output from the victron saolar control same as you, what settings have you set for high and low voltage please?

 

[Deaky]

@Deaky I've Just added proper solar and the votronic trickle charger for the starter battery. Running off the load output from the victron saolar control same as you, what settings have you set for high and low voltage please?

High 13.6v Low 13.5v

 

[awillyfootball]

Dead simple. Wire from load output to "I BOARD" and a wire from "II START" to your starter battery (or the starter connection at your Orion) Set the voltage you want the load to turn on and off in the app and it just works automatically.

Hi there, I know its an old post bit I'm looking at doing the same. Could or can you remember what you set the app voltage for yours or does it depend on the battery itself I have a 110ah agm fitted. Also is the mppt app or the orion app that you make the change in I have a 110ah agm fitted. Thanks

 

[Wolstenholme]

I use a simple trickle charger, connected to the load output of the Victron MTTP and the starter battery. This will keep the starter topped up when sunny. You can set the parameters of when the load output turns on in the Victron App. Really useful, we have electric doors and boot and I was worried constant use while camping might flatten the battery. I've never had such issue.

https://www.amazon.co.uk/VOTRONIC-Votronic-Standby-Charger-12-V/dp/B01MCRV17U/ref=asc_df_B01MCRV17U/?tag=googshopuk-21&linkCode=df0&hvadid=534732308385&hvpos=&hvnetw=g&hvrand=202936994963899621&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9045481&hvtargid=pla-789456830144&psc=1

Can you draw a wiring diagram for me please?

 

[bobbybasic]

This will also be a factor in your starter battery running flat. You should not connect any -ve connections to the starter battery post. There is a shunt on it that measures the amps in and out. anything connected here will not be measured. All -ve connections must be made to the body of the van.

This is almost certainly why you’ve suffered a flat battery.



View attachment 169891

This is interesting. Would the same apply to the BM2 battery monitors? So attach the negative to the body of the van and not the -ve battery post?

 

[roadtripper]

This is interesting. Would the same apply to the BM2 battery monitors? So attach the negative to the body of the van and not the -ve battery post?

That would be best practice yes. More importantly with the BM2 devices make sure you fit them with a fuse as otherwise having that set of unfused wires across the battery with little separation is a bit risky.