Wednesday, Oct 07, 2015 at 12:01
Hi Deejay
As above I don't disagree with most of this threads comments , I am just coming at your problem from a different angle.
I agree with your friends comments about standard alternator not always fully charging battery and also agree with Peters comment that, if done right a DC-DC charger can do better.
The GU patrol as sold in many areas has provision for 2 battereis and sufficent power to charge at over 100 amps (for a few minutes till regulator reduces volts when hot).
So for most of the year your car will automatically take care of those batts.
You don't need to do anything to make it all work except run car for a few minutes at a time .
Mines a petrol gu so its very quiet and on worst of days it might need 1/2 hour total.
But its important to know when it needs a charge so as batteries are not frequently run down to far,
and to use stratergies that minimze power needed from batts.
As for actual batteries slight variations in models and specs are occurring constantly so I checked at local Bayswater place when getting my morning coffee today.
The current equivalent to my 18 month old Exide N70zzlmf is called the Endurance and retail today was $187. It is a sealed Maintenance free Calcium/Calcium type capable of many discharges , but not as many as a full deep cycle. I prefer this version as I change them regularly even though they ok still.
It also comes in straight lead acid (cheaper) and a higher spec extreme AGM version $235 with over 800cca.
Note the attached reference list about a dozen variations of N70's
http://www.exidebatteries.com.au/Downloads/Brochure/N2046F%20Exide%20Product%20Category%20Brochure%20SUV-4WD-LC.pdf
P.S. My CF25 Waeco fits between the patrols front seats with some slight mods, and hence never suffers from extremes.
P.S.2 I think I said that N70 will fit the Patrols N50 cradles with some slight trimmings
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