Is there power loss with 2nd batt in rear???

Submitted: Wednesday, Feb 25, 2004 at 19:03
ThreadID: 10788 Views:1791 Replies:6 FollowUps:3
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Is there any loss of power or any problems with placing 2nd battery in the back of the 4by, im guessing that a thicker gauge wire would need to be run between the two, but is there any other things to take into consideration???

Thanks!!
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Reply By: Sandie - Wednesday, Feb 25, 2004 at 19:26

Wednesday, Feb 25, 2004 at 19:26
Nup. Just big fat cable. Fatter than your thumb should work nicely.

Marty
AnswerID: 48072

Follow Up By: Synergist - Wednesday, Feb 25, 2004 at 20:31

Wednesday, Feb 25, 2004 at 20:31
Thanks mate!!
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Reply By: Rick Blaine - Wednesday, Feb 25, 2004 at 20:58

Wednesday, Feb 25, 2004 at 20:58
Im not sure of your situation but I know that in the ACT if you have a battery in the passenger compartment then it has to be in a special vented enclosure to prevent accident...in the event of someone smoking etc.
AnswerID: 48088

Reply By: macca - Wednesday, Feb 25, 2004 at 21:37

Wednesday, Feb 25, 2004 at 21:37
being an owner of a bitsarmissing Challenger, my dual battery sits in the back with all its mates (fridge, beer,spares etc) no worries. I have an anderson plug sitting tucked away for when I need the "Dual" battery . works a treat. wiring is such that it is charged when it is required etc.
AnswerID: 48094

Reply By: Wombat - Wednesday, Feb 25, 2004 at 21:51

Wednesday, Feb 25, 2004 at 21:51
From what I can gather Synergist as long as the wiring is heavy enough to carry the total current without any drop in voltage you should be right. Although venting can be an issue. Collyn Rivers has published some great books which cover these sort of questions."Live today as if there may be no tomorrow"

Wombat
AnswerID: 48101

Follow Up By: Wombat - Wednesday, Feb 25, 2004 at 21:53

Wednesday, Feb 25, 2004 at 21:53
His web address is www.caravanandmotorhomebooks.com"Live today as if there may be no tomorrow"

Wombat
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FollowupID: 310030

Reply By: Rosco - Bris. - Wednesday, Feb 25, 2004 at 22:20

Wednesday, Feb 25, 2004 at 22:20
Syn

Sandie is spot on. If you intend to use it as a backup for starting the beast you'll need a wacking great cable. Try welding leads ... very heavy (thick) and flexible.

Make great jumper leads.

CheersFidei defensor

Rosco
AnswerID: 48109

Follow Up By: V8troopie - Thursday, Feb 26, 2004 at 01:46

Thursday, Feb 26, 2004 at 01:46
That's what I have. Aux battery is behind the drivers seat in a special box.
Thick welding cable from Aux. negative post through floor to the heavy main battery cable connection on the chassis.
Smaller Aux. positive cable via a relay from the main battery.
Plus long enough welding cable jumper lead to reach from the pos post of the aux battery, across the front passenger seat & door to the pos post of the main battery under the bonnet. That jumper lead is kept handy in the gear &junk box in the back of my troopie. There is, of course, also a negative jumper lead there in case another car needs to be jump started.
Klaus
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FollowupID: 310059

Reply By: Member - Bradley- Friday, Feb 27, 2004 at 10:05

Friday, Feb 27, 2004 at 10:05
No probs as long as you use good cable and protect it from chafing etc. Use good quality cable from a car audio supplier, they can also give you the crimp on eyelets etc, the car audio cable is fine strand ofc copper and designed for the least voltage drop possible, use 4 guage or go to 2 guage if you really want to be a high current freak !! :-) OH yeah also make sure you put an inline fuse within 6 inches of the battery to protect the cable if it shorts to the body. you can get nice weatherproof wafer fuses rated up to 500 amps. And put the batt in a 'marine' box and vent it properly.Just killin time till easter...............go and play in the dirt, instead of workin in it......
AnswerID: 48336

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