LC twin batteries: Can I isolate and use as dual system

We just got a 2nd hand diesel LC and it has two batteries in it wired in parallel (not isolated). Toyota say they are a must for starting. One mechanic even suggested "not" to split them into main and aux. So far we only have the fridge being wired up as the only accessory.

What should we do? Get a third battery for the fridge and accessiries (not many yet) etc or just hook into it as is?

Our first trip is in May.

Thanks all
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Reply By: Member - Graham H (QLD) - Monday, Jan 12, 2009 at 09:28

Monday, Jan 12, 2009 at 09:28
Yes you can the second battery was included for cold country starting.However if u do split them you would be bwetter buyimg two larger capacity Hybrid or similar as the Toyota standards are only about 450CCA each whereas a N70ZZ is abot 650

So a search on here for "dual battery"and you will get enough aswers to take till May to read them.

This question gets asked at least twice a page so you wont have any trouble finding what to do. go to www.sidewinder.com and buy a Redarc isolator and go from there.
I answered a post with detailed instructions on how to do this so read through what u find
AnswerID: 343826

Reply By: Willem - Monday, Jan 12, 2009 at 10:19

Monday, Jan 12, 2009 at 10:19
vk1dx

I would leave them as is. If you are only running a fridge then the batteries should last a couple of days or more if you are stationary in one place. Buy one of those portable Jumpstart Batteries as an emergency item

I have a dual set-up with a common solenoid isolator. When stationary I run the engine three times a day 20 minutes at a time and that keeps the fridge going. Most days however I find an excuse to start up to go exploring orcollecting firewood so the batteries get charged anyway


Cheers
AnswerID: 343838

Reply By: Member - Phil G (SA) - Monday, Jan 12, 2009 at 10:33

Monday, Jan 12, 2009 at 10:33
I'll assuming you're talking about the factory TD.
I'd separate them - very easy to do. Use the passenger side battery as a starting battery, and the drivers side as the aux. The 1HD-FTE starts easily from a single battery. As Graham mentions, update your batteries to N70 size.
I'd be wary about relying on starting a big turbo diesel from a jump-start pack.
AnswerID: 343841

Reply By: Muddie - Monday, Jan 12, 2009 at 12:45

Monday, Jan 12, 2009 at 12:45
We did this a few weeks back.
Site Link

And the answer is yes it can be done but you should replace the batteries sooner rather than later
AnswerID: 343860

Follow Up By: Muddie - Monday, Jan 12, 2009 at 12:47

Monday, Jan 12, 2009 at 12:47
Link no good try post 65033
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FollowupID: 611724

Follow Up By: vk1dx - Monday, Jan 12, 2009 at 13:04

Monday, Jan 12, 2009 at 13:04
Hey Muddie How do I find thread 65033? Phil
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FollowupID: 611728

Follow Up By: Member - Graham H (QLD) - Monday, Jan 12, 2009 at 15:02

Monday, Jan 12, 2009 at 15:02
Use the search function like I said to do at the start of the thread.
Type the thread no in and tick forum



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FollowupID: 611744

Follow Up By: vk1dx - Monday, Jan 12, 2009 at 18:29

Monday, Jan 12, 2009 at 18:29
You wouldn't pick it. The search brings me to this thread. Want to try again. I will try to find it using the bruader search with "a few weeks back" as the date line. Phil
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FollowupID: 611784

Follow Up By: Muddie - Monday, Jan 12, 2009 at 20:07

Monday, Jan 12, 2009 at 20:07
sorry try 64661
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Reply By: vk1dx - Monday, Jan 12, 2009 at 12:48

Monday, Jan 12, 2009 at 12:48
Thanks Guys and good to catch up with you Willem again. I think we will leave the batteries alone for the moment. All stops bar one in our May sojourne to the Kimberley are one night stops. The fridge will most probably be switched off at night anyway. Dunno - depends on the weather.

It certainly wont be iced up and we wont have to worry about an icy cold start. One of our sons has a charge pack that we can borrow to supplement the batteries. I also agree with Phil about kicking a 4lt diesel over with a charge pack. But it will only be used to supplement a low batter not replace a flat set.

I just visited an off road shop and spent a heap as well. Another reason to wait. Scrubbed the snorkle from the list at the last moment as I don't believe we will get one. No swimming and spending that much just to supplement the air cleaner Hmmm!!! Maybe in the future. Funny how the only ones to say to get one are the shop owners!!!

Battery exchange, isolator and anything else can wait till before our Cape run.

Thanks Guys. Also took advice read on another topic and we are joining a club tomorrow night at their meeting.

Appreciated
AnswerID: 343861

Reply By: Member - Mike DID - Monday, Jan 12, 2009 at 13:55

Monday, Jan 12, 2009 at 13:55
In Australia, the Pajero 3.2 Diesel is supplied with one 12" battery.

In really cold countries like Japan, it's supplied with a 12" and a 10" battery wired in parallel.

As long you have the batteries set up so that both are connected for starting in cold weather, it won't be much different. Maybe your starting battery will only last four years instead of five.
AnswerID: 343868

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