Discoloration of cell fluid

Started by Dgrblu, September 08, 2021, 08:13:07 PM

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Dgrblu

Eight six volt Crown CR-430 batteries, 2018 date code, wired in series for a 48 volt system.
I am beginning to see the electrolyte in the cell nearest the negative post turn brown after adding water. Appears to me that when I shoot the water in it stirs up some sort of sediment. Would this be normal?

Thanks
4.4 Kw Off Grid system
6 strings of 3 panels (825w/string)
Midnite combiner
Classic 150
Magnum PAE sine inverter
Magnum distribution panel, expandable.

boB


I'm not sure.  Someone else will most likely chime in with info.

I m wondering though if you usually use distilled water ?

boB
K7IQ 🌛  He/She/Me

Dgrblu

4.4 Kw Off Grid system
6 strings of 3 panels (825w/string)
Midnite combiner
Classic 150
Magnum PAE sine inverter
Magnum distribution panel, expandable.

ClassicCrazy

system 1
Classic 150 , 5s3p  Kyocera 135watt , 12s Soneil 2v 540amp lead crystal for 24v pack , Outback 3524 inverter
system 2
 5s 135w Kyocero , 3s3p 270w Kyocera  to Classic 150 ,   8s Kyocera 225w to Hawkes Bay Jakiper 48v 15kwh LiFePO4 , Outback VFX 3648 inverter
system 3
KID / Brat portable

boB

K7IQ 🌛  He/She/Me

Dgrblu

Quote from: boB on September 09, 2021, 01:40:44 AM
Quote from: ClassicCrazy on September 08, 2021, 10:39:35 PM
Take a look here - they list a number of reasons.
https://technoluxpro.com/en/akkumulyatory/avtomobilnye/mutnyj-elektrolit.html

Larry

WoW !  Great article !

Thanks Larry !

boB

Yes, the link was very informative.
The settings on the Classic 150 have not changed in the year that I have owned the place/system. Not frying them.  Water has always been where it needs to be. The batteries SG is all good. So being curious, I took a peak at the electrolyte while the Classic was resting and found all cells were clear. Having a bit of good timing, I later found the system in EQ mode so I took a peak at the electrolyte. All cells of all eight batteries the electrolyte was muddy color with floating swirling particles.
I'm now thinking that with the batteries being used for three years that there would be debris from the cells as they age.
May be being a bit of a worry wort..... :)
4.4 Kw Off Grid system
6 strings of 3 panels (825w/string)
Midnite combiner
Classic 150
Magnum PAE sine inverter
Magnum distribution panel, expandable.