Auxillary Battery
Submitted: Tuesday, May 16, 2006 at 17:47
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Hairy
Im about to replace my second battery and are wondering whats the best type to go for? Whats the benifit of deep cell and how much dearer are they?
Cheers
Reply By: boo boo - Tuesday, May 16, 2006 at 18:11
Tuesday, May 16, 2006 at 18:11
I replaced
mine with an 85amp deep cycle marine battery it seems to work ok, but as they say you should only flatten then 50%. the AGM battery will allow you to flatten it 80%. Neither battery is cheap but go for the best you can afford
AnswerID:
172980
Follow Up By: Member - Ian H (NSW) - Tuesday, May 16, 2006 at 20:26
Tuesday, May 16, 2006 at 20:26
Be aware, the AGM batteries should only be charged at a max of 27 amps according to the rep at Supercrank batteries.
I just fitted a Rocket Deep Cycle battery, funny name but made by Global Yuasa. Cost $275 incl GST. 85 amp/hr. Hope it keeps the beer cold in the fridge.
FollowupID:
428729
Follow Up By: Alloy c/t - Thursday, May 18, 2006 at 17:01
Thursday, May 18, 2006 at 17:01
Ian H ,, next time you see your supercrank battery rep tell him /her that he /she /it dont know sh-t from clay , AGM batts will take whatever amps you throw at them ,VOLTS are a different story however. !!!
FollowupID:
429300
Follow Up By: Member - Jeff M (WA) - Thursday, May 18, 2006 at 17:58
Thursday, May 18, 2006 at 17:58
Yeah it's a amzing what some so called "professionals" will tell you.
I had the OWNER of battery world in
Joondalup trying to tell me that a 14.2v charger will be fine for my Calcium-Calicum battery because "
well he only sells them for a living".
He also told me that the "Battery fighter" only charges at 14.2v when on their spec sheet it says 14.5v!
But I guess he knows what he's talking about because "he sells them for a living"....
I'm sure the 16 year old at Kmart sells TV's for a living too...
FollowupID:
429317
Reply By: Max - Sydney - Tuesday, May 16, 2006 at 18:30
Tuesday, May 16, 2006 at 18:30
Hairy
I have had a couple of Federal deep cycle batteries in the car, and unless this one lasts more than about 2 years, I am going to use a Marine battery next time. It might actually do better, as I have put a relay on the caravan fridge circuit so it won't run when the engine is not running. That should stop serious excess discharge.
But the van has a marine one and is approaching 2 years and it has done
well.
Blowed if I know!
Max
AnswerID:
172986
Reply By: Derek from Affordable Batteries & Radiators - Wednesday, May 17, 2006 at 06:58
Wednesday, May 17, 2006 at 06:58
Hi Hairy
AGM is the way to go. Look after it and it will give you many years service. If you are using a fully automatic controller like the Redarc or ABR Bi-80 or Bi-200 the AGM will charge fine.
Regards Derek.
AnswerID:
173072
Reply By: Member - Jeff M (WA) - Wednesday, May 17, 2006 at 20:03
Wednesday, May 17, 2006 at 20:03
I'm now running 2 x 105 amp/hr calcium-calcium deep cycles. Cost about $120 each so you can get two for the price of one 100amp trojan!
The only down side is they don't charge to 100% of the alternator as they require a higher voltage (14.7-8v) to get to 100%. I solved this problem by installing a Hella plug in the front grill and connect the vehicle to a 3 stage charger when it's parked up. Of course who needs 100% of 210amp/hr for you're normal camping trip anyway, 80% is just fine! :-)))
I use a Century/Yussa 700cca cranker for starting her up.
AnswerID:
173197
Reply By: Member - Mike DID - Thursday, May 18, 2006 at 10:46
Thursday, May 18, 2006 at 10:46
If you look at the Manufacturers Data sheets from Remco or Absorbed Power AGM batteries, you will see that even if you discharge them to 0% capacity remaining (not 0 volts !) EVERY day, then even after a year, a 100 amp hour battery will still be able to supply 60 amphours.
Mike
AnswerID:
173318