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Re: Enabling dual battery mode

Posted: Sat May 28, 2022 11:05 am
by Bala1
Can't help with most of that but where is the bcdc -ve connected to.

Re: Enabling dual battery mode

Posted: Sat May 28, 2022 1:20 pm
by bim05
The -ve terminal on the battery in the tub, which has the -ve feed from the primary. It is not connected to the chassis in the tub.

Re: Enabling dual battery mode

Posted: Sat May 28, 2022 1:21 pm
by bim05
That is to say the BCDC -ve is connected to the -ve terminal in the tub, and that -ve battery terminal is not connected to the chassis in the tub.

Re: Enabling dual battery mode

Posted: Sat May 28, 2022 3:47 pm
by Bala1
bim05 wrote: Sat May 28, 2022 1:21 pm That is to say the BCDC -ve is connected to the -ve terminal in the tub, and that -ve battery terminal is not connected to the chassis in the tub.
I always connect -ve of the aux battery to chassis. That way if you have a short to chassis anywhere the fuse/breaker will work.

If it is as yours is I suspect, but am not sure, that if you have a short to chassis it may damage the bcdc as it would be a path to aux -ve.

I do have a set up in the Ute I'm in at the moment that is set up basically the same as yours but it was a quick temporary set up for this trip. I have managed it with solar so not left it connected to the Ute 12v input.

Re: Enabling dual battery mode

Posted: Fri Jun 03, 2022 9:37 am
by P-L-N
This topic is great. I have a PX3 and only run the single start battery.

From reading every post in this topic, i have come to the conclusion that in my circumstance 90% (14.4v) will keep the battery well charged. I will eventually put in a 2nd battery but for now, i just dont want to replace the battery every 2 years.

Is this setting suitable for a totally stock setup to maintain a higher SOC?

Cheers,

Pete

Re: Enabling dual battery mode

Posted: Fri Jun 03, 2022 12:41 pm
by Bala1
Im happy with running 90%. On my px2 I need to have headlights on to keep charge v at 13.2. I still give the battery a charge with mains charger when I deem necessary. I live on a rural property so not really any short trips helps.