van battery to car

Submitted: Friday, Apr 17, 2009 at 13:45
ThreadID: 67937 Views:2005 Replies:2 FollowUps:2
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can anyone tell me if it is ok to run a cable from the car battery direct (via a fuse bix) to a battery in the van ? or do i need to have some specialised wiring and controller?
I have a Prado current model and an older Advance van with no battery (but gets 12v through the plug.) THe battery i want to connect to is a 100amp/hr aus cell sealed lead acid battery.

Have been told that this is possible as the vehicle will regulate the power going to this additional battery.

New to all this and not keen on tampering without some advice
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Reply By: ChrisK - Friday, Apr 17, 2009 at 14:49

Friday, Apr 17, 2009 at 14:49
I have the batteries in my van connected to the car by the method shown in this web page. http://www.fridge-and-solar.net/dual_bat.htm
It's a great site with lots of useful info. I bought a redarc isolator on ebay at a great price. it was all very easy to install. Remember to take head of the cable size that is mentioned & it'll work a treat.

ChrisK
AnswerID: 359995

Follow Up By: peter_s - Friday, Apr 17, 2009 at 16:04

Friday, Apr 17, 2009 at 16:04
THanks Chris thats just what i needed shows you everything
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FollowupID: 627922

Reply By: Member - Mike DID - Friday, Apr 17, 2009 at 17:57

Friday, Apr 17, 2009 at 17:57
Both batteries need to use the same charging voltage.

The trailer battery will not charge if you have a fridge running in the trailer while driving.
AnswerID: 360034

Follow Up By: Member - 1/2A - Friday, Apr 17, 2009 at 20:11

Friday, Apr 17, 2009 at 20:11
I have two 110 amp/hr AGM's and two Bushman 55 lt fridges in the Vision. The Vision is connect to the cars charging system via Anderson plugs and 10 mil wiring. One Bushman as a freezer (-18 deg C ) the other as a Fridge ( 0 deg C ) and the AGM's get charged. SO yes it is possible to run a fridge and charge your batteries while driving.
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FollowupID: 627944

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