Submitted: Monday, May 17, 2010 at 18:45
ThreadID: 78543 Views:2281 Replies:7 FollowUps:2
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What is the best sealed deep cycle battery to use?.
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Reply By: Member - Andrew (QLD) - Monday, May 17, 2010 at 18:54

Monday, May 17, 2010 at 18:54

AnswerID: 417034

Reply By: TerraFirma - Monday, May 17, 2010 at 19:00

Monday, May 17, 2010 at 19:00
One that has the deepest cycles...
AnswerID: 417035

Reply By: Sand Man (SA) - Monday, May 17, 2010 at 19:10

Monday, May 17, 2010 at 19:10
I'm going to give a sensible answer.

If you can justify the initial purchase price, an AGM battery is by far the best option.
Quick to charge, doesn't spill or generate explosive gasses in confined areas.

It may depend on where you intend placing it.
In the engine bay, a sealed wet cell battery may be a better choice, due to lighter weight for a similar footprint battery and an increased ability to withstand the heat generated from the engine.

Having said that, I ran an AGM successfully in the engine bay without any noticeable adverse affect.



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AnswerID: 417036

Reply By: ChipPunk - Monday, May 17, 2010 at 22:31

Monday, May 17, 2010 at 22:31
Or a certain brand of Gel-Cel in norther climates....

LOL! I love the interpretation of sealed.
I hate AGMs/VRLAs being the official definition of "SLA" - ie Sealed Lead-Acid battery.
To me SLA also includes Gel Cels.
And although Gels and AGMs are not "truly" sealed, I have never regarded wet cells as sealed. Semi-sealed yes, but never "sealed".

But to quote an "expert" that has delivered batteries for over 20 years "all SLAs are the same" (technology I presume).

Until I read the other replies, my answer would have been the battery that best suits your environment and usage.
Andrew completed the rest of my answer. (Respect!)
AnswerID: 417079

Reply By: Maîneÿ . . .- Monday, May 17, 2010 at 23:54

Monday, May 17, 2010 at 23:54

How deep are your pockets ?

How long do you want them to last ?

Maîneÿ . . .
AnswerID: 417090

Reply By: Member - Tony (ACT) - Tuesday, May 18, 2010 at 06:30

Tuesday, May 18, 2010 at 06:30
I am having a goiod run out of the "Fullriver" battries. I use 2 x 110amp ones in the camper.
AnswerID: 417099

Reply By: Krypty - Tuesday, May 18, 2010 at 07:49

Tuesday, May 18, 2010 at 07:49
Hi all.The battery will not be being used under the bonnet.As the vehicle is a common rail diesel,I have a DC charger to up the alternator voltage to a suitable level (14.4volt).Also I need to charge at a highish current ,about 40 amps,so that rules out the 'chinese current limited 'batteries like the full river.Wondering what others are using,with success.
AnswerID: 417105

Follow Up By: R&J Batteries - Tuesday, May 18, 2010 at 08:23

Tuesday, May 18, 2010 at 08:23
I'm not sure what "chinese current limited" refers to, and anybody that makes statements like "all SLA are all the same" is clearly not to be considered an "expert" either. Sealed lead acid (SLA) or Valve Regulated Lead Acid (VRLA) batteries include Gel and AGM and should not be confused with conventional liquid acid Maintenance Free (MF) batteries.

Manufacturers publish a charge current limit based on the worst case charge voltage - in general this is around 20-30% of the nominal capacity. If you are charging a flat battery from an alternator around 14.2V there will be a high current (50-60A) for a relatively short time (5-10 mins), and this will taper down very quickly - this is quite normal and is insufficient time to develop significant internal heating which will lead to any gassing.

I would not recommend at all using 40A at 14.4V into any battery less than around 130Ah to ensure a long service life. Most common DC chargers are rated between 10-20A which is quite suitable for the common 100Ah size batteries.

Hope this helps, Dave
FollowupID: 687199

Follow Up By: Member - Teege (NSW) - Tuesday, May 18, 2010 at 13:15

Tuesday, May 18, 2010 at 13:15
I don't mean to be rude, but how did you expect to get an answer in relation to those circumstances from your original question? Or are you making this up as you go along?

FollowupID: 687235

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