Local App - SNAFU :-|

[Westbranch]

Yann, try this,  http://seekpart24.com/hp/battery-acid-hydrovolt-tester-18115

[SolarMusher]

After a contact with the batteries vendor, today, he asked me charge the batteries with 1A for 50-60 hours to desulfate them

Yann,
Advices that were given here, came from guys with several years (decades) of experience in off-grid or back-up battery system, you'd better listen to them...
Not sure that your dealer really knows what he's talking about...
Erik

[Westbranch]

Yann, you said,

He also asked me precises logs for the values during each charge stage with the Classic, to match these with my voltages logs.

I would take what he said to mean he wants the Voltage setting in the Classic for Absorb  and Float  and the time limits that each has been set at, ie the min and max time for each, so that he can compare them to you Vlog graphs.

I don't think that a 1 Amp charge rate will do anything...it is probably less than the natural depletion rate of those batteries. I have never heard of such a low rate used for desulphating, unless it has a high frequency spike added to it that flows in reverse...

[Halfcrazy]

Yeah 1 amp for 2-3 days wont do much for a Flooded cell In my opinion.

Anytime I have tried to recover sulfated batteries I go for the shock of full current. If the manufacturer says I can charge at 100 amps I hit them with 100 amps

Ryan

[Lya72]

Yes, I understand all your advices, but we are at the end of the two years garantie and I will follow the recommandations of the vendor, who is also the batteries maker.

What's the minimal SG must I obtain to say that the batteries are recovered (1.26 ?)

If I can't obtain that level, the batteries will be replaced.

Yann

[Westbranch]

Yann, I looked but the Manufacturers documents are all in one or another of the European languages...  You should be able to find the charging specifications from them..  The Manufacturer sets the SG and charging specs.

HTH

[Lya72]

This morning at 07:30AM, after 40 hours of big charging followed by 24 hours of slow charging,  a little 1.25 SG with, I confirm 1A as seen on the charger ampmeter.


WestBranch,

I can just find these features on the MIDAC EV6T :

MAIN TECHNICAL FEATURES:
=========================
• Tubular positive plates
• Grids with radial geometry reticule
• Active material with specific composition to react
against the cycles stress
• Grids with Pb/Sb/Sn/As/Se alloy which assures
the resistance against corrosion and performs the
optimal contact with the active materials
• Micro-porous rubber separators coupled with
glass wool mat, suitable to avoid the shedding of
active material

DURABILITY:
===========
• 1200 cycles according to DIN 43 539 (3)


Have you seen links where they speak about charging methods ?


Thanks,

Yann

[SolarMusher]

What's the minimal SG must I obtain to say that the batteries are recovered (1.26 ?)

You'd better ask your dealer and in the same time ask for absorb time/voltage to set the Classic for these batteries.
Don't you say that he is the manufacturer?
Erik

[Westbranch]

Yann, you asked:
[Have you seen links where they speak about charging methods ?/i]

No I could not find any..

Erik, the co, appears to manufacture/sell all over Europe.  Web sites in several languages

[SolarMusher]

I've seen it West, not realy useful.
Better ask these infos to his dealer, he should know that stuff better than us  .
Erik

[Lya72]

This night at 23:30 (11:30PM), after 40 hours of big charging followed by 39 hours of slow charging,    SG : 1.26


I take a picture of each of the Classic menus. With that and with your notes, Erik, I will search for the values to change in which screen.


Thanks,


Yann

[SolarMusher]

Yann,
Just my opinion, I would charge it until SG stop rising for 1/4hr-20mn.
Erik

[dgd]

Yann, you asked:
[Have you seen links where they speak about charging methods ?/i]

No I could not find any..

Erik, the co, appears to manufacture/sell all over Europe.  Web sites in several languages

I asked my battery supplier  if he had ever seen the Midac EV6T 6v/240Ah battery. Apparently he had replaced a couple from a Fiat campervan with 6v/235Ah r220s.  Italian made batteries, circular plate type, charge settings same as R220.
I don't know if they are same as R220s but seems a reasonable match.

dgd

[Westbranch]

BUMP....

Hi Yann, what is happening with the batteries on slow charge rate?

[Lya72]

Hi WestBranch,

NO bump, but perplexity !!

After 40 hours of big charging followed by 48 hours of slow charging,    SG topped at : 1.265