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Post Info TOPIC: Hope I got a bargain..
aussie_paul


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Hope I got a bargain..
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A few days ago I saw a Face Book market place advert for batteries suitable for our van. I got 3 x 100 amp/hr for $220 to replace the two we have been using. I took the bathroom scales and my ubeaut battery tester. They weigh 31.7kg and show up as 100% good batteries. The two old batteries are showing 13% and 69% with the new ones showing 100%, so time will tell if I got a good deal I suppose.biggrin

 

Aussie Paul. smile

Battery.JPG20191023_090955..jpg20191023_092800.jpg20191023_092827..jpg20191023_095040.jpg



-- Edited by aussie_paul on Saturday 26th of October 2019 10:37:03 PM



-- Edited by aussie_paul on Saturday 26th of October 2019 10:38:17 PM

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Radar


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You will be a long way down the track before you need to think about them batteries again.



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sandsmere


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Looks like a good deal to me Paul.

 

 

 

 



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PeterInSa


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Paul, I like to buy Van Batteries that have the wording Deep Cycle printed on them, to me your batteries are good buys... weight/cost/Amps wise, But my thinking is that they are cranking/starter batteries( according to the orange/red sticker.... CCA 780 Amps).

help.summitracing.com/app/answers/detail/a_id/5069/~/whats-the-difference-between-a-starting-battery-and-a-deep-cycle-battery%3F

For your sake , I hope I am wrong.

Peter

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Mike Harding


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The batteries should be fine.

What happens is that places such as banks, hospitals and the like have backup UPS power systems which use the sort of batteries you have bought and these systems *must* work when mains power fails and they *must* work within 20mS of a mains power failure so (usually) every 12 months the batteries in the UPS are changed for new ones, no questions, no tests just chuck them out and fit new - this is a sensible thing to do.

Nowadays there is a bit of a backyard industry in buying and reselling these, generally, unused batteries. You do take a risk that they may have been subject to outages in which case they may have been discharged to 9V5 but they will withstand that a few times without significant capacity loss in any event.

I'd buy them without hesitation providing the seller looked kosher.



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Peter_n_Margaret


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PeterInSa wrote:

Paul, I like to buy Van Batteries that have the wording Deep Cycle printed on them, to me your batteries are good buys... weight/cost/Amps wise, But my thinking is that they are cranking/starter batteries( according to the orange/red sticker.... CCA 780 Amps).

help.summitracing.com/app/answers/detail/a_id/5069/~/whats-the-difference-between-a-starting-battery-and-a-deep-cycle-battery%3F

For your sake , I hope I am wrong.

Peter

 The difference between "deep cycle" and "cranking" batteries (the number and thickness of the plates) changes the rate that the chemical reactions that occur during charging or discharging can take place. 

A cranking battery (with lots of thin plates) will charge faster and discharge faster and with less voltage drop than a battery designed for slow cycling use. These are typically called fast recombination and slow recombination. Yes there may also be a total life difference, but each can do either job, even if a little differently.

My original house batteries in the OKA were Fullriver HGLs. They were designed as standby batteries for uninterruptable power supplies. They lasted 5 years free camping for 6-8 months each year. When I replaced them with Fullriver DC (cycling) batteries, I also installed a Fullriver HGL as a crank battery. They all lasted 9 1/2 years and were still working fine when replaced.

Don't be concerned. They will work just fine.

Cheers,

Peter



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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
Hetho


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Some great answers to this post, and no negative comments.

You have purchased on Bargain. Well done and enjoy many more charged up years.

We went to Broome for a month in August and both batteries died. 5 years old which I can live with.

The new ones cost a lot more than $80.00.

Well done Aussie Paul.

Regards.

Hetho.

 

 

 



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Peter_n_Margaret


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Hetho wrote:

 

We went to Broome for a month in August and both batteries died. 5 years old which I can live with.

 Batteries don't typically suddenly "die" unless there has been an internal failure of some sort (or they have been very badly mistreated).

They usually just slowly fade away. Capacity decreases, voltage drop increases, they don't hold charge as well during periods of non use.

 

I have had crank (wet) batteries fail suddenly a couple of times in the OKA the past 15 years. I suspect that in both cases they were shaken to bits inside by the corrugations. NEVER had that happen again since I changed the crank battery to AGM (as well as the house batteries).

Cheers,

Peter



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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
terriwa


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Also heat is an issue, I have had cranking batteries fail within 12 months in darwin. thats why Cabs put them in the boot.



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Peter_n_Margaret


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terriwa wrote:

Also heat is an issue, I have had cranking batteries fail within 12 months in darwin. thats why Cabs put them in the boot.

Overcharging can be an issue if the batteries get hot (and taking longer to charge in cold conditions).

That is why every charger should be temperature compensated. This will adjust the charge voltage according to the temperature of the battery.

Cheers,

Peter



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OKA196, 4x4 'C' Class, DIY, self contained motorhome. 960W of solar, 400Ah of AGMs, 310L water, 280L fuel. https://www.oka4wd.com/forum/members-vehicles-public/569-oka196-xt-motorhome
 

 
PeterInSa


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My Temperature Compensation Probe/Cable is just left on top of the battery loose, I would prefer that the probe is bolted to the negative terminal as per below, to me it would give a lot better check on battery temperature. Am I going to change over.... No,..Its just that I think its a better setup.

www.kepcopower.com/support/2281594r1.pdf

Peter

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Dick0


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Mate, at that price who cares how long they last.

Looks like a really good bargain and if you do need to replace them in 5 years or so you are well and truly ahead.



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Cheers, Richard (Dick0)

"Home is where the Den is parked, Designer Orchid Special towed by Jeep Grand Cherokee Limited"

"4x250W solar panels, Epever 80A charger and 3x135Ah Voltax Prismatic LiFePO4 Batteries".
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