12volt x 12volt battery chargers by RedArk, any good?

Submitted: Tuesday, Jan 26, 2010 at 14:02
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Hi to all
I have been looking at the 12volt x 12 volt chargers from redark and think they sound likea great item with many uses.
Has any one had any good / bad experiences?


Regards
GN
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Reply By: Notso - Tuesday, Jan 26, 2010 at 14:56

Tuesday, Jan 26, 2010 at 14:56
Yep I reckon they look good too. I think they also have a multiple input type that allows Solar, 240 volt and 12 volt input.
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Reply By: Member - Robert (WA) - Tuesday, Jan 26, 2010 at 15:19

Tuesday, Jan 26, 2010 at 15:19
Hi Have a look at this one from ABR

http://www.sidewinder.com.au/page168aa.html
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Follow Up By: Member - G N (VIC) - Tuesday, Jan 26, 2010 at 17:25

Tuesday, Jan 26, 2010 at 17:25
Hi Robert

Interesting spec sheet, i will have to compare to redark, I thought they were only maker!
from memory the spec of redark not as good as this ABR one?

thanks GN
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Reply By: RV Powerstream P/L - Tuesday, Jan 26, 2010 at 16:27

Tuesday, Jan 26, 2010 at 16:27
If you have a 100A alternator that can give you 60A continuous duty why would you want to strangle it with a unit that does not take advantage of all the spare amps available.
If your alternator only produces the same capacity that the unit can produce than it can be adavantageous to get the higher voltage available but how many alternators only produce 15A.
Yes Im biased towards inneficient products that claim to improve your lot.
Ian
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Follow Up By: Member - G N (VIC) - Tuesday, Jan 26, 2010 at 17:20

Tuesday, Jan 26, 2010 at 17:20
Hi Ian
Fair points and i must admit i have not thought it through a lot, but uses may be
- charging a boat battery from a vehical running a fridge in boat while traveling.

- topping up the aux battery to get another days camping without having to run generator or vehical to charge aux.

- for those with a 3rd battery in a trailer / van whom have poor charge set ups.

- an ability to have a mobile + independant charge system that ciould be used in a number of vehicals / situations.

What do you think?

Regards
GN
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Follow Up By: RV Powerstream P/L - Tuesday, Jan 26, 2010 at 18:09

Tuesday, Jan 26, 2010 at 18:09
GN
Research and exploit what you can do from the alternator fully as there are a lot of things that can do that can achieve what you want for less that the $1600 price range for the one you have mentioned and take into account that if one combine product failed you stop everything.
I cannot imagine that the unit could be mobile without difficulty to use from vehicle to vehicle and that would also add a lot more cost with installation due to its multiplicity function.
You should grow with something by experience instead of buying someone else expensive idea of what yopu should have and then finding out it is not all that its cracked up to be.
Efficiency is the target so as I stated at the start find the most cost effective way to exploit what you have already available.
Ian
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Follow Up By: Member - G N (VIC) - Tuesday, Jan 26, 2010 at 19:28

Tuesday, Jan 26, 2010 at 19:28
Ian

So you sugestion would be?

I have a Rotronics independant charge system in one vehical and think its pretty good, want to do 2 other vehicals to dual battery systems and would like something that is simpler to install, and hopefully charges the aux quicker as well as being price competitive. Also being able to handle disimilar battry size / type like the rotronic independant charge does is important.

Rgs
GN
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Follow Up By: RV Powerstream P/L - Tuesday, Jan 26, 2010 at 19:49

Tuesday, Jan 26, 2010 at 19:49
GN
Go to Sterling-Power.com and look at the specs of the Alternator to battery charger and the battery to battery charger.
The alternator to battery charger goes from 80A input to 210A input and the battery to battery charger is currently 50A input.

The 80A and 130A alternator to battery charger can do all battery types with selectable settings and is a smaller footprint than the battery to battery charger.
Prices have come down due to the strength of the dollar against the pound and the prices are shown on our website that is still shown on this forum.
That will give you an idea but if you are interested please make contact by email as the price on the sirte is RR.
Ian
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Follow Up By: Faulic_McVitte - Tuesday, Jan 26, 2010 at 22:23

Tuesday, Jan 26, 2010 at 22:23
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Follow Up By: Marty-VIC - Wednesday, Jan 27, 2010 at 07:45

Wednesday, Jan 27, 2010 at 07:45
if you charged your battery with 50A you would kill the battery instantly
Ctek D250S $375 is good and Redarc gear is good. 2 good choices to look after your batteries and not wreck them. used Ctek on last trip and highly recommend
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Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 07:57

Wednesday, Jan 27, 2010 at 07:57
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Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 08:07

Wednesday, Jan 27, 2010 at 08:07
Marty Vic

If you charged your battery with 50A with temperature compensation you would charge your battery quicker and would not kill the battery.

If you read my statement it clearly states input amps and that is what the units will accept and the resistance of the battery will limit what it will accept and with temperature compensation fitted this maximises what the battery can accept safely.

Understanding charging and batteries is done by major suppliers af chargers and alternators around the world and if it wasnt safe then no one would be making gear to do smart charging and there are millions of units now world wide.

Charles Sterling just happens to be a world leader in this field.

Ian

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Follow Up By: Member - G N (VIC) - Wednesday, Jan 27, 2010 at 09:33

Wednesday, Jan 27, 2010 at 09:33
What a JOKE

"the poster is nothing more than a sniper and the post would have shot his credability to pieces. "??????????????????????????????????????????????????

I am just a simple farmer who like to learn and play with a few toys. I like to associate with decent people whom i have mutal respect with.

I realy dont understand the attack on my post but if it offends you then why reply??

Good LUCK and I do NOT need YOUR ADVICE, YOUR HELP, YOUR PRODUCT OR ANYTNTHING.

Good Bye
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Follow Up By: Member - Allan B (QLD) - Wednesday, Jan 27, 2010 at 09:45

Wednesday, Jan 27, 2010 at 09:45
Er, GN, I think Ian was referring to Faulic_McVitte, not you.

Cheers
Allan

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Follow Up By: Member - G N (VIC) - Wednesday, Jan 27, 2010 at 09:52

Wednesday, Jan 27, 2010 at 09:52
Allan

Am i not "the poster"?????
GN
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Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 10:01

Wednesday, Jan 27, 2010 at 10:01
I in no way meant or intended to upset any fair dinkum person specifically you GN and the post in question was a vitriolic attack of me from faulic_mcvitte which the moderators deleted and I am not particularly worried about person attacks as I know there can be no basic substance to them.

If you did not see the post made then I can understand why you reacted as you did.

Remember if you ask a question you get answers so what you keep and what you dont is your business and your silence would be an accepted answer for anyone with a practical attitude.

Ian
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Follow Up By: ModSquad - Wednesday, Jan 27, 2010 at 10:03

Wednesday, Jan 27, 2010 at 10:03
GN,

It was directed to Faulic_McVitte and not you.


Ian,

All your response has done is inflame the matter. Please keep your responses On Topic.


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Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 10:28

Wednesday, Jan 27, 2010 at 10:28
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Follow Up By: Member - G N (VIC) - Wednesday, Jan 27, 2010 at 11:21

Wednesday, Jan 27, 2010 at 11:21
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Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 11:53

Wednesday, Jan 27, 2010 at 11:53
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Follow Up By: Member - Mike DID - Wednesday, Jan 27, 2010 at 16:15

Wednesday, Jan 27, 2010 at 16:15
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Follow Up By: ModSquad - Wednesday, Jan 27, 2010 at 17:04

Wednesday, Jan 27, 2010 at 17:04
Follow Ups 5 and 7 have been Reinstated for all to view.

The thread is also being locked.

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Reply By: Faulic_McVitte - Tuesday, Jan 26, 2010 at 18:07

Tuesday, Jan 26, 2010 at 18:07
Ctek D250S $375 is cheaper than Redarc and can use for solar input saves buying solar regulator. Ctek has MPPT controller built in and whacks out full 20A great buy
AnswerID: 401172

Follow Up By: RV Powerstream P/L - Tuesday, Jan 26, 2010 at 18:20

Tuesday, Jan 26, 2010 at 18:20
Hello the hit and run merchant is here and what is so efficient about whacking out 20A?

What an over statement as 20A doesnt represent whacking efficiency but you definately appear to be whacking something.

How come you didnt say that Red Ark s are no good and you have replaced 10 of them already.
Ian
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Follow Up By: Lex M (Brisbane) - Wednesday, Jan 27, 2010 at 14:58

Wednesday, Jan 27, 2010 at 14:58
Can't see anything about solar charging or MPPT capability in any documentation I found for Ctek 250S.

Am I missing something?
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Follow Up By: Member - Ed C (QLD) - Wednesday, Jan 27, 2010 at 15:20

Wednesday, Jan 27, 2010 at 15:20
Lex,

Ctek D250S

2nd page, it mentions caravan, solar / MPPT ..

I'd like to see it explained in a bit more detail, but it does look like an interesting bit of kit....

:)

Confucius say.....
"He who lie underneath automobile with tool in hand,
....Not necessarily mechanic!!"

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Follow Up By: Lex M (Brisbane) - Wednesday, Jan 27, 2010 at 15:55

Wednesday, Jan 27, 2010 at 15:55
Funny that it's not mentioned in the Ctek manual on the Ctek site.
http://www.ctek.com/Manuals/D250S_EN.pdf
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Reply By: olcoolone - Tuesday, Jan 26, 2010 at 22:23

Tuesday, Jan 26, 2010 at 22:23
We haven't had any problem with the RedArc DC BC1220 yet and they have only been out for about 4 months now.

Have seen a Ctek D205s but haven't sold on yet, they look like a good unit.

The Red Arc is water proof as opposed to the sterling that isn't I believe.

Most deep cycle battery's don't like much more then 20 amps being put into them so why would you want to try and push 50 to 100 amps in.

Ian I take it you don't sell Red Arc?

The other unit to look at is the Ranox that is very good as well but a bit harder to set up then the RedArc but will do more thing.

The RedArc is a very good unit and I'm sure you will be happy with it and their after sales support if anything goes wrong.

The Red Arc and the Ranox are the only two DC to DC chargers on the market that is you have a problem you can talk to the engineers direct here in Australia.

AnswerID: 401220

Follow Up By: RV Powerstream P/L - Wednesday, Jan 27, 2010 at 08:23

Wednesday, Jan 27, 2010 at 08:23
Olcoolone
"The statement most deep cycle batteries dont like much more than 20A" is a statement that is wrong and it depends on how you charge with what and what is the resistance of the battery.

You have generalised deep cycle batteries into one restrictive category and this can mislead people.

With todays communication you can talk to anyone anywhere in the world as easily as talking to someone in Australia and with the wide expanse of Australia it could be like talking to someone elsewhere in the world.

Technology today is rapidly changing and there is a company now in Brisbane representing a US firm in setting up charging stations for EV,s that can claim an 80% recharge in under 20Minutes and you cant do that with 20A.

The US parent have been conducting testing on various batteries and the Australian Company battery Energy Systems has been stated as have the best capacity longest life in a lead acid battery tested so far.

A 200AH battery energy battery could accept a 200A inrush charge in the first hour with temperature compensation.
Ian


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Follow Up By:- Wednesday, Jan 27, 2010 at 10:54

Wednesday, Jan 27, 2010 at 10:54
....A 200AH battery energy battery could accept a 200A inrush charge in the first hour with temperature compensation....

I'd like to find out more about it, battery chemistry, internal resistance data, discharge graphs for various loads, peukert graphs etc.

Thanks for any links you might have for me.

Best regards, batterymeister
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Follow Up By: olcoolone - Wednesday, Jan 27, 2010 at 11:29

Wednesday, Jan 27, 2010 at 11:29
Ian, why would the battery manufactures stipulate different to what you are saying.

Out of the 5 brands of deep cycle battery's we sell (all leading brands), the manufacture recommends a charge rate usually between 15 to 30 amps depending on battery size.

As fair as I aware there is no ubute battery that is suited to the 4x4/RV market that can do everything well and except extremely high charge rates.

Can you please post the links so I can find out about this new technology.

Sure technology is changing fast but the technology is not usually available to the general public yet or is extremely expensive or unsuitable for 99.99% of applications.


"You have generalised deep cycle batteries into one restrictive category and this can mislead people. "

Please explain?

Soooo...that means any battery I can charge at what ever current I feel like?

Can you also fill me in on the Red Arc problems you are seeing.

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Reply By: Member - Allan B (QLD) - Wednesday, Jan 27, 2010 at 11:26

Wednesday, Jan 27, 2010 at 11:26
Ian (RV Powerstream), I got very interested in the Sterling AB1280 Alternator-to-Battery Charger until I read their installation instructions which stated "Install the unit in a cool and well-ventilated position close to the alternator".

Where in a diesel engine compartment in the Australian Outback in summer would you find a cool position close to the alternator?

Define "cool". In a boat maybe but in a 4WD??

Now I am not just having a shot at you. I really am interested in the product, but cannot find in Sterling's literature any reference to temperature in numerical terms and there is too much money at stake to take chances. So OK, perhaps I could ask Sterling but would I get a guarantee if the unit failed? I doubt it.

Cheers
Allan

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