An 80Ah batt will run that. If you check out online battery suppler websites or similar they will list the specs ie 80Amp Hour will provide 80Amps for a period of an hour (simples) but a lesser battery may object to providing 80Amps for 5 mins and could start to loose voltage as it discharges , Also not all batteries like to be deep discharged so a larger battery that discharges slightly and is then topped/charged may/will last longer. Also the frequency of those 5 minute bursts will need tobe taken into account ie need to be long enought between to allow for reasonable recharge etc. At 80Amps draw over 5 mins I'd recommend you don't scrimp on the cables used as these may overheat cause unnecessary resistance , ie cheap car battery jumper leads will probably not be suitable. What size battery you choose will be governed by how long and often you ant to run it and how often you want to keep replacing the battery. The bigger the capacity battery the longer you can use it before you need to recharge and its likely that it will last longer than one that looses most of its charge over the 5mins cycle.
19th Dec 2010 9:38 pm
Bushwanderer
Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050
I always have the motor idling when I'm using the compressor.
HTH,
PeterThe Bearded Dragon
20th Dec 2010 1:12 am
colin6307
Member Since: 17 Apr 2010
Location: croydon
Posts: 246
question
Thanks, but at idle your alternator is not putting out much power, to get max power revs have to be 1500 rpm or more, thats how i understand it.
Cheers
20th Dec 2010 8:33 am
drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
Hi colin, Bushwanderer’s advice is the way to go and even if you have your idle set for a slightly higher idle, you are still going to get around 50+ amps from the alternator, which is 50 amps less you have to pull off the battery.
As for the battery, an 80 amp draw is a battery killer current load even for short periods like 5 mins and the only batteries that have a hope of handling that kind of constant current draw are spiral wound AGMs, something like an Optima.
Standard batteries will supply the current but the more often you use your compressor the sooner your going to need to replace your battery.
Again, it is standard practice to have your motor running at high idle when drawing high currents like your planning on doing.
Remember, your alternator is specifically designed to supply high currents for extended time periods, while no battery is.2008 TDV8 RR Lux + 2009 D4 2.7
27th Dec 2010 5:41 am
Bushwanderer
Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050
Hi Tim,
Great info!
Best Wishes,
PeterThe Bearded Dragon
28th Dec 2010 3:58 am
colin6307
Member Since: 17 Apr 2010
Location: croydon
Posts: 246
battery
Thanks for the reply,
Now for a compressor XD4000, made by Oasis mfg, draws 180 amps in 12 volt, they recommend Odyssey battery
Gentlemen, i get replys from Australia, not from here, whys that?
I think i know why, would not go down very well if i put it in words
Again thanks for the information
Cheers
28th Dec 2010 9:04 am
drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
Re: battery
colin6307 wrote:
compressor XD4000, made by Oasis mfg, draws 180 amps in 12 volt, they recommend Odyssey battery
As posted, even the compressor manufacturer is recommending a spiral wound AGM.
One question, what on earth would you use such a high current drawing compressor for?2008 TDV8 RR Lux + 2009 D4 2.7
28th Dec 2010 9:41 am
MacLeod 313
Member Since: 18 Apr 2008
Location: away
Posts: 10723
Re: battery
colin6307 wrote:
Thanks for the reply,
Now for a compressor XD4000, made by Oasis mfg, draws 180 amps in 12 volt, they recommend Odyssey battery
Gentlemen, i get replys from Australia, not from here, whys that?
I think i know why, would not go down very well if i put it in words
Again thanks for the information
Cheers
Well when your done with Trying to prevoke members of the forum, I would heed Drivesafes (Tims) knowledge and advice. Tim is the owner/distributer of:
So I think he is more than qualified to give the advice, and nobody else needs to add. Many members on this site have his system fitted, including me.............
If you are thinking of running equipment you are suggesting, maybe its more prudent to protect the D3's Battrey and Charging system and fit a Split charge and Auxilary Battrey.
28th Dec 2010 10:52 am
NickJ
Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
Is that what the space in the offside box was originally designed for, a second battery? or was this just found to be the ideal place to fit one?
28th Dec 2010 11:02 am
MacLeod 313
Member Since: 18 Apr 2008
Location: away
Posts: 10723
Yes it is, its where the Battrey goes for LHD D3's. Darn site better to install a Auxillary Battrey if you are gonna run equipment mentioned
28th Dec 2010 11:12 am
NickJ
Member Since: 11 Oct 2010
Location: there's no f in point
Posts: 2137
I'm planning shortly to use the space to store the detachable towball, after making a cradle and webbing strap to hold it in securely. There's a few threaded holes for bolts so I'm hoping this should work out okay.
My left-hand stroage in the boot is full of other bits and pieces; warning triangle, footpump etc, and I think the LR holder for the towball just a amounts to a piece of dense polystyrene?
28th Dec 2010 1:11 pm
DaveT
Member Since: 01 Aug 2005
Location: Cornwall
Posts: 2578
That's a fair old lump of metal to have floating around next to some relatively delicate bits & bobs.
Would the removable towbar fit under the 3rd row seats?
My compressor fits v. neatly in the 2nd battery space (not as big as the xd4000 though ! )Long succession of Disco's since 2001...
SIII Lightweight - neglected & rusting. Bulkhead, A panels, vent panel & outriggers now disintegrated - Next years project!
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(not as big as the xd4000 though ! )
