Starting from a dual battery setup

That assumes that the remote battery has a heavy enough cable to carry the starter current without too much drop.

Only one jumper is needed because the earths are common. Also assuming decent earth connection. Seems the easiest solution for a rare event.

Phil I

Yep thats how mine is set up, simple button under dash if I need to get some power from aux battery, I run heavy duty wire to carry all or most of the amps over.

Simple but works for me

Stefan

Derek,

its a navara dual cab 3.2 diesel, and battery is mounted in far left rear corner, original cabling to it is as you supplied me with my kit.

The aux is 85ah deep cycle.

Its not a prob, never had it happen, if really had to would just dismount it and use my jumpers, or buy another set of jumpers n join em up (temporary)

I'd just wondered if it was poss without the lifting of a heavy battery.

thanks anyway

Ron

Of course it is an under bonet setup. For elsewhere in the vehicle a longer jumper lead may be the go.

Make your own from a length of welding lead.

And me , too ...........

As an electrically-impaired person I wait with bated breath for more responses .....

I have a similar set-up to Bilbo above [a Redarc] with an over-ride connection not wired up yet ......... [on account I am unsure of how to ??] from one of Derek's Dual Battery set-ups.

Have the main battery in engine-room and second battery mounted in the rear of my Troopy, with Derek's HD wiring, etc.

Positive lead from main to Redarc - Redarc to circuit breaker - circuit breaker back to second battery.

Second battery is earthed to chassis frame.

[I have also a momentary-push button, yet to be installed and connected.]

Made up my own battery-box set-up, again with one of Derek's voltmeter gauges and a couple of lighter sockets and all is good for me ............

BUT I do wish to do the same as you blokes above, that is use the second battery to start my engine, should I ever be silly enough to empty the main ...........again!!

And, like you Bilbo, I carry my little [GMC850] generator just for battery-charging.

So, how do I get around it ........... without then running the risk of "emptying" a good battery into the bad one ?

Where does the over-ride switch fit in ?? And the push-button ?
And what does it all mean ?

Am willing to learn .............

Ron

I have a Navara too and have a battery in the back. I have purchased an Opposite Lock dual battery monitor in my cab o monitor both batteries, and this has a button so I can engage (similar to what is described above) both batteries. it is easy to install.