Schaudt DT203 panel out of sync (1 Viewer)

[OldAgeTravellers]

Hi folks,
I have a Hymer with a Schaudt EBL101 with a DT203 electronic panel I have also fitted a Victron BMV-702 smart battery monitor. I have three Varta 90ah wet leisure batteries which I think are LFD90's (can't give the reference at the moment as it is too late to go out and look) so I set the DT203 to 270ah. I have three 100watt solar panels wired into the EBL101 via a Votronic duodig MPPT regulator as advised by Schaudt with a link wire from the controller to the EBL101 so as to show the Solar charge and utilising the +S feed for the Fridge which works well but only when the DT203 reaches 100% which it is not managing to do at the moment even though we have had 8 hours of strong sun today. The battery monitor said we got there by 3pm today.
On solar the Battery monitor quite quickly gets back up to 100% but can still be showing a charge of sometimes 7amp or so from solar while the DT203 is still only showing 60 or 70%.
It even got to the point that the battery alarm on the panel was going off and the heater shut down. So we booked into a site for a couple of days to go on hook-up so as to get the batteries up to 100% then drain down for a couple of hours at 10amps then back up to 100% with the mains charger as advised by Schaudt.
Since then it has gradually over the past two weeks got out of sync again so that at this moment for example after about 4 hours of tv (which would have been a maximum of 30ah, the monitor is showing -33ah since 100%) the BMV-702 is showing 91% at 12.36 volts with a drain of -1.3amps but the DT203 is showing 64% 12.4 volt and -1.3 amp drain. I am pretty sure I set the battery capacity at 270 ah on both meters.
Both show the Starter battery at 12.7 volt the EBL101 happily keeps that topped up all the time.
Should I have set the DT203 to 270 x 80%=166Ah perhaps which I vaguely remember reading sometime. Or have I set the battery monitor wrong? But I think that over a period it calculates the capacity itself.
So.... has anybody got any ideas what is going on. Which is correct the DT203 or the BMV-702. And what should I do to get them in sync.

 

[OldAgeTravellers]

Bump.......

 

[Xabia]

I have always set mt DT panel to 80% of the total battery amp hours and never had a problem with sync. Victron and Schaudt agree with each other.

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[Ambilkate]

Hi we have had a lot of probs with Ebl not being able to cope with a bank of batteries as the Ebl burnt out . We ended up having to have the Ebl repaired

Not sure if this will help you but it did us have a read of these. . Also found this group on Facebook very helpful

 

[OldAgeTravellers]

I have always set mt DT panel to 80% of the total battery amp hours and never had a problem with sync. Victron and Schaudt agree with each other.

Thanks for that I will try changing the DT to 80% Today and see if they will agree after a day on charge in the sun.
Steve

 

[OldAgeTravellers]

Just checked and it is set at 216 AH not my miss-typed 166 last night.
This morning the DT says 56% while the Victron says 87% but both showing the same voltages.
Thanks @Ambilkate I will have a read through those references.
Steve

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[Lenny HB]

Maybe because the DT203 is expecting Gel batteries, when your flooded batteries reach 14.3-14.4v they are almost fully charged and the charger will keep them on an absorption charge for one hour. With Gels when they reach 14.4 volts they are only 80% charged and rely on a much longer absorption charge the EBL does this for 8 hours to fully charge them.

 

[Ambilkate]

We thought over the last two years ours were working fine and coping. We did have glitches when the batteries kept going right down even though we had 240w worth of solars, 3x 110swhich we found was to much for the Ebl as it only has a maximum charge output of 18am this is what caused the Ebl to burn out. The links explain everything. Martin at A & N caravan in is very knowledgeable on Ebl's and was highly recommended.

 

[Lenny HB]

We thought over the last two years ours were working fine and coping. We did have glitches when the batteries kept going right down even though we had 240w worth of solars, 3x 110swhich we found was to much for the Ebl as it only has a maximum charge output of 18am this is what caused the Ebl to burn out. The links explain everything. Martin at A & N caravan in is very knowledgeable on Ebl's and was highly recommended.

I only have the basic 18 amp charger with 3 batteries fitted but prepared to risk it as we hardly ever use mains, just about to top the solar up to 300 watts waiting for some decent weather to fit the panel.
I think you will only get a problem with the EBL if you regularly charge the batterys from fairly flat, never seen mine charge at more than 10 amps from the mains.

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[Ambilkate]

I only have the basic 18 amp charger with 3 batteries fitted but prepared to risk it as we hardly ever use mains, just about to top the solar up to 300 watts waiting for some decent weather to fit the panel.
I think you will only get a problem with the EBL if you regularly charge the batterys from fairly flat, never seen mine charge at more than 10 amps from the mains.

OK well info is there for those that may find a problem. We are happy know but our bank statement isn't it can be very costly to replace a new Ebl. Wished we had read up more beforehand
Kate

 

[OldAgeTravellers]

Maybe because the DT203 is expecting Gel batteries, when your flooded batteries reach 14.3-14.4v they are almost fully charged and the charger will keep them on an absorption charge for one hour. With Gels when they reach 14.4 volts they are only 80% charged and rely on a much longer absorption charge the EBL does this for 8 hours to fully charge them.

Thanks Lenny, just checked the EBL101 is correctly set for Blei-Saure not Blei-Gel I don't think there is a battery type setting in the DT203 but will access the hidden menu later to see if I have missed a setting.
Because I have 300watt of solar which could theoretically overload the EBL101 the guy at Schaudt, forget his name, said to parallel up BL6 & BL7 to increase the input capacity just in case I am parked on the equator mid summer sometime.

 

[Lenny HB]

All the setting on the EBL does is change the absorption time from 8 hours (Gel) to 1 hour (Flooded).

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