Ctek battery quick charger advise please

I have been looking into buying a Ctek battery charger for our Jayco Sterling caravan battery system.
I have no idea what size we would need to buy, is CTEK MXS 5.0 BATTERY CHARGER 12 VOLT 5A enough, CTEK XS 7000 BATTERY CHARGER or do we need CTEK XS 15000 12 VOLT 15AMP or CTEK XS25000 12V 25AMP . I dont understand this lingo, but think it sounds like a great idea to be able to fast charge the battery system when we are free camping for 3 or more days.
Can we install the battery charger ourselves? Do you only attach it when you want to do a quick charge?
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Reply By: Member -Dodger - Monday, Jul 11, 2011 at 16:22

Monday, Jul 11, 2011 at 16:22
Most Jayco vans that have a battery pack installed already have a battery charger/power supplier built in. It is usually a black square facia that has fuses in it and there would be a switch somewhere that turns this system over to the charger.
Or are you doing away with inbuilt one and installing the Ctek one? if so you would be better to go to the 25amp job.

The one built in is usually 10 or 20amp model.



I used to have a handle on life, but it broke.

Cheers Dodg.

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Follow Up By: Tina G - Monday, Jul 11, 2011 at 17:40

Monday, Jul 11, 2011 at 17:40
We have a switch that turns on the battery when we arent using power, but no switch relating to quick charge.
The battery is located under the front lounge, maybe I should check under there.
(I just went out to the van and there is no life in it at all. Its been sitting there for 2 months. Couldnt even check the battery, water levels etc. The battery is lifeless, so I have connected the van to power and will at least be ready when we take off again.)
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Follow Up By: landed eagle - Monday, Jul 11, 2011 at 20:16

Monday, Jul 11, 2011 at 20:16
Hi Tina, make sure that your battery isolation switch is turned on as though you are using the battery off power supply. If it isn't, the battery wont be included in the built in system's loop and no charge is delivered to it.
Once the battery drops below a predetermined state of charge the power supply shuts down.Mine turned itself off at about 9.2 volts from memory. You can check this by putting a multimeter across the terminals of the battery with the power supplied to the van from the house.Have the switch off ,nothing in the charge system,flick it on and it will spike to 13+ volts and begin its charge cycle. Has brought my battery back from near death with no problems. Probably not as quick as the higher tech stuff but is doing the job for me.
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Reply By: Dust-Devil - Monday, Jul 11, 2011 at 16:50

Monday, Jul 11, 2011 at 16:50
This CTEK battery charger thingy had me intrigued as to just what Tina G was referring to, so I did the most unusual of things - Yep! I typed CTEK into the EX-OZ search engine.

It's obviously a well known item/subject as a trillion hits came up regarding same that discussed all manner of things concerning these jobbies.

So informative that I think I might just purchase one and install it in my Jayco.

Thanks Tina G for pointing me in the right direction.

DD
AnswerID: 459658

Reply By: Ozhumvee - Monday, Jul 11, 2011 at 17:45

Monday, Jul 11, 2011 at 17:45
Before you spend the bikkies take a look at the Projecta range.
We've had two Ctek's (7 amp and 25 amp) for a few years and both have performed perfectly.
When fitting out our Oka motorhome I wanted to install one permanently, didn't want to use the 25 amp Ctek as it comes in handy for quickly charging batteries at home so went looking for another. The Projecta has a few big advantages, 1/ it can be set up manually to charge different types of batteries (gel, AGM, wet cell etc). 2/ It has a clear display which shows battery voltage and state of charge clearly and best of all it has a remote head which is easily fitted in a viewable location when the charger is buried somewhere, 3/ a tad cheaper than a Ctek and every bit as good especially when bought online through ebay.
There are also Matson brand chargers although I have no experience with these.
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Reply By: Wilko (Parkes NSW) - Monday, Jul 11, 2011 at 18:47

Monday, Jul 11, 2011 at 18:47
Hi Tina,

What size/type (AGM,gel, leadacid) battery do you have in mind. This can determine what size charger you can use. Ive got 2 Cteks 25 and 7 amp and they are superb but take a look at Sidewinder's (business member here on EO) web. He's got some good gear and a fair bit cheaper.

You would prob need someone to permanently install it if your not that confident. It's fairly easy but it could cause you more hassles then its worth.

Cheers Wilko
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Follow Up By: Tina G - Monday, Jul 11, 2011 at 20:00

Monday, Jul 11, 2011 at 20:00
Thanks. I will have to do some more checking and get back to you.
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Reply By: Fatso - Monday, Jul 11, 2011 at 19:10

Monday, Jul 11, 2011 at 19:10
Hello Tina. The first thing is I am no expert, but I was looking for a battery charger some time back & someone told me to make sure I got one that would charge my particular battery.
So I did a search of the battery & the manufacturer had a recommended charge rate for the particular battery.
I forget what the battery was but it was a wet cell lead acid & I do remember it had a minimum required input of 14ah. Like I said. I forget most of the details. There were more.
So find out what model your battery is & google that & find the manufacturers specs & start from there.
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Follow Up By: Tina G - Monday, Jul 11, 2011 at 21:47

Monday, Jul 11, 2011 at 21:47
Excellent advice, thanks.
See, I knew this forum would help me immeasurably!
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Reply By: Member - Bruce C (NSW) - Monday, Jul 11, 2011 at 19:11

Monday, Jul 11, 2011 at 19:11
Hi Tina G,

As you have been advised the Sterling range of Jayco caravans have a built in power supply.

Having said that I have a 25 amp CTEK (XS 25000) and would not be with out it.

I used to go through batteries on the farm here with the several diesel motors we have and charging them with the old conventional chargers was more of a problem than you could imagine. Finished up with a pallet load of dead batteries.

I now put any of the batteries on the CTEK and and walk away and forget it for a day or two, or even a week for that matter. They only do good to a battery.

Strongly advise you to get one as they will charge any sort of lead acid battery.
Even if you have a charger in the Sterling as these CTEKs are the bees knees as they say.

just charged up 2 - 100 amp hr batteries which have not been charged for 4 years and they were dead as a maggot. One day on the CTEK and we now have 12.8 amps per battery. Yet to do a load test but it is looking promising.

Buy the 25 amp model as you will not regret it and I have seen them on Ebay for about $270 without the battery clamps but they have eyelet connectors on them which is OK anyway if you are connecting them into a circuit semi permanently.

The 25 amp unit gives the batteries a big belt on start up and that is what they need from my experience.

Projector might be as good but I have not used one. They are expensive but probably worth it.

Cheers, bruce.



At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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Follow Up By: Member - Bruce C (NSW) - Monday, Jul 11, 2011 at 19:20

Monday, Jul 11, 2011 at 19:20
Here is the link to the CTEK 25 amp

http://www.ebay.com.au/itm/CTEK-XS25000-12V-25AMP-BATTERY-CHARGER-MARINE-CARAVAN-/320723690084?pt=AU_Car_Parts_Accessories&hash=item4aac9f2264

just copy the link into your browser address bar and that will get you there.

Bruce.
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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Follow Up By: Member - Bruce C (NSW) - Monday, Jul 11, 2011 at 19:23

Monday, Jul 11, 2011 at 19:23
Here is the link to the Projecta 25 amp model with remote indicator.

Buy now price of $248.

http://www.ebay.com.au/itm/PROJECTA-IC2500-BATTERY-CHARGER-12-VOLT-25-AMP-/300574588157?pt=AU_Car_Parts_Accessories&hash=item45fba43cfd

Cheers, Bruce
At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.

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Follow Up By: Fatso - Monday, Jul 11, 2011 at 19:36

Monday, Jul 11, 2011 at 19:36
Another thing from the non-expert.
I have heard from several sources that the worst things you can do for batteries is leave them sit with low levels of charge or overcharge them. A good quality automatic battery charger can be left connected to the battery for long periods of time without overcharging.
As Bruce said, it is much easier to use the automatic charger & thus will extend your battery life.
Probably work out cheaper buying a top quality charger than replacing batteries more often.
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Reply By: Mark C - Monday, Jul 11, 2011 at 20:26

Monday, Jul 11, 2011 at 20:26
Tina, the setec charger installed in your jayco should be all you need, as previously mentioned the battery switch must be on for the battery to charge, buying another charger is a waste of $$s you can check out the specs on the setec site http://www.setec.com.au/faq_jayco.html.

Cheers
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