Tline 590 battery charging query.

[Wee McB]

Hi folks, just joined last week so this is my first post. I'm replacing my AGM battery on my Tline 590 and replacing it with two Yuasa 100AH L36-EFB batteries. Can anyone tell me if the charger will charge these batteries ok given that they are not AGM batteries?

 

[Jev88]

Hi folks, just joined last week so this is my first post. I'm replacing my AGM battery on my Tline 590 and replacing it with two Yuasa 100AH L36-EFB batteries. Can anyone tell me if the charger will charge these batteries ok given that they are not AGM batteries?

Hello and welcome. More expertise will be along shortly but let us know what controller you already have for electrics. Modern ones often have a setting for AGM/GEL/Lead-acid. They will charge but have slightly different peak charging levels and you don't want to boil them or conversely undercharge them regularly.

 

[pappajohn]

As above.
AGM batteries have a much higher voltage during the absorption stage and lasts much longer before moving on to the float charge stage. .
Chances are normal wet batteries will overcharge and boil.

 

[gus-lopez]

 

[Raul]

Misconception
Agm will charge in the region of 14,4v to minimise electrolyte loss, caused by excessive gassing if voltage to high. Flooded can take a hammering, and higher voltages, as you can replace the water lost due to gassing. You can give a forced equalising charge on flooded at15-16v. On sealed you can’t do that.

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[pappajohn]

AGM needs 14.4 to 14.8v.
LA needs 13.8v to 14.2v or long term plate damage will occure.
Both are absorbsion mode voltages and the timescale difference between AGM and LA is massive... AGM needs around 8 hours... LA maybe 1 or 2
15v is for desulphasion only to break up deposits on plates.

Why else would the manufactures design in 3 different selectable charge characteristic.

 

[Raul]

Well, they all LA, Lead acid. So default volt per cell is 2,4v. In our case here 12v nominal is 14,4v charging at cv, till current tails of then float.
Agm are still LA but, electrolyte Is suspended in glass mat separators and have a pressure release valve for excess gassing. So they are called SLA agm or gel. These two are sealed. There is another SLA but flooded, the ones with the eye over one cell with a float. Absorb time is NEVER a fixed timed event. It is dictated by the DOD depth of discharge.
My house is off grid, powered by 18kwh Rolls battery bank. Flooded, with a charging curve of 2,4vpc volt per cell to 2,5vpc. That equates to 14,4v to 15v In terms of a 12v block. Temperature compensated to 64mv per cel per degree C.
I come from renewable energy industry and worked/work for fair few years in energy storage. I have designed and installed few of grid places, so I have accumulated a bit of experience in this nish.
Sorry for the drift,
Flooded take much higher voltage than agm’s or gel’s. If voltage to high, Gel’s blister and sulphate, agm’s opens the valve and gases out irreplaceable electrolyte and sulphate. Flooded not a problem, you can replace.

For the OP, it all depends of what voltages are set on your charger, chances are that it will be close or even ok.
Flooded are robust, just difficult to manage the gassing in confined spaces.

 

[Lenny HB]

AGM batteries have a much higher voltage during the absorption stage and lasts much longer before moving on to the float charge stage. .

Agm will charge in the region of 14,4v to minimise electrolyte

Depends on the type of AGM type 1 the bulk charge should be 14.7-14.8v, type 2, 14.2-14.4v.
The Banner's the Hymer group fitted from 2012 to 2015 were Type 2. The Varta they currently fit are Type 1.

I don't rate either of them they do not fair well in lesiure use they are really a starter battery.

 

[Wee McB]

Thanks guy but not being electrically minded I'm still unclear about swapping out single AGM for twin Yuasa' s. The charging is done through an ec176 power supply unit I think if that's any help.

 

[Lenny HB]

Thanks guy but not being electrically minded I'm still unclear about swapping out single AGM for twin Yuasa' s. The charging is done through an ec176 power supply unit I think if that's any help.

Who's the manufacturer of the ec176, it sounds like a Sargent unit but I can't find it on their site.
If it is Sargent that would be a control panel, what is the charger?

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[Jaws]

Who's the manufacturer of the ec176, it sounds like a Sargent unit but I can't find it on their site.
If it is Sargent that would be a control panel, what is the charger?

It is indeed a Sargent... fitted to Autotrails to name but one

 

[Lola Crossley]

Hi folks, just joined last week so this is my first post. I'm replacing my AGM battery on my Tline 590 and replacing it with two Yuasa 100AH L36-EFB batteries. Can anyone tell me if the charger will charge these batteries ok given that they are not AGM batteries?

Hi Wee McB,
Sorry I can't answer your question as still finding my way around my T590, although you can be sure someone on here will provide the info/expertise. I wanted to ask where you propose fitting the second battery as I'm looking to do the same later on?. Regards the battery charger - my 2018 model Nordelettronica NE 21A. Incidentally this is our first motorhome and 10 mths on it has been fantastic in all aspects.
Nigel.

 

[Pausim]

I had a quick look at some Sargent manuals but could not find one for an EC176. The ones I did find only mentioned 13.8 Volts which would not charge any battery properly.

 

[Jaws]

Found this:

"The charger built in the EC176 is a fixed voltage charger capable of delivering : DC Output 13.8 Volts nominal, Current 12 Amps max "

 

[Lenny HB]

Found this:

"The charger built in the EC176 is a fixed voltage charger capable of delivering : DC Output 13.8 Volts nominal, Current 12 Amps max "

So perfect for wrecking any battery connected to it.

The OP needs to fit a decent multi-stage charger before changing the battery as any battery will be ruined in a couple of years or less & will never get fully charged probably no more than 70%.

Not surprised the AGM has died I wouldn't expect it to last more than a few months with that charger.

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[Jaws]

The OP needs to fit a decent multi-stage charger before changing the battery as any battery will be ruined in a couple of years or less & will never get fully charged probably no more than 70%.

My Sargent is exactly the same.. never reaches a full charge state, but I have never worried overly as we rarely use it.. the solar regulator does a proper job.. But if we used hook ups a lot I would have changed the charger out years ago
Even when we are plotted up in Spain for two months, we might have the lead plugged in but it is rare that it is switched on.. used mainly for the washing machine once a week !
Looking back, our electric bill for 2018 was 8€ for the two months, and 12€ this year

 

[Wee McB]

Thanks folks. This is the only detail I can find on the actual charger. Incidentally, the old AGM hasn't died. Still in good condition after nearly 3 years use.

 

[Pausim]

No helpful information there about actual voltages. If it really was only 12V then it would be very damaging to the battery so it is probably reasonable to assume it is just a fixed supply somewhere in the 13V+ range. Not really a charger just a 12V power supply. If you are hoping to rely on battery power sometimes, rather than always having an electric hook up, then I think you would be wise to follow the advice given by Lenny HB about getting a multi stage charger.

Lots of us are sometimes misled by the battery voltage, a damaged battery can show a good voltage but have no depth of charge. Think of a battery as a water tank, if it is half full of limescale it may still show a decent pressure but the flow and capacity might be much reduced.