Low battery measures . Help !!!!

Started by dcave44, September 04, 2018, 07:15:10 AM

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dcave44

Hi all ,
I have 4 Rollls 550 in series and one midnite 150 charger
I can not recharge the bank completely . I got Ez Red hydrometer and mi last measure is .1150 and 52v on the charger . I program 58v on bulk , 54v on float and 60v in equalization . the inverter is off and the same measures are maintained . I do not have a temperature sensor , but the battery bank is within 75F to 86F degrees temp constan . Is in charge several days without any change . The system has a little more than 1 month in use. what is missing by programming or is the batteries defective ?
I hope you can help me .
Thanks in advance .

Matrix

I would probably start by increasing:
Bulk to 61v
Float to 54v
EQ to 64v

Then I would Run an EQ until the SG stops rising in all cells.  You also really need a temperature compensation glass hydrometer.  Like this one

https://smile.amazon.com/OTC-4619-Professional-Battery-Hydrometer/dp/B0050SFVHO/ref=sr_1_4?ie=UTF8&qid=1536060641&sr=8-4&keywords=battery+hydrometer
Grid-Assist Off-Grid
REC TwinPeak 2 285W 3S-3P 2565w-STC 1926w-NMOT Array / Classic 150 / Conext SW 4024 Inverter
Trojan L16H-AC 435Ah bank 4S  with 7' of 4/0 cable
24 volt system /  Need 3200Whs Daily
My System Install

Matrix

And I think even that hydro is supposes to be read holding in straight up and down.  You appear to be holding it on it's side.  But I really dont know about that one.  I would start by getting a good hydro. 
Grid-Assist Off-Grid
REC TwinPeak 2 285W 3S-3P 2565w-STC 1926w-NMOT Array / Classic 150 / Conext SW 4024 Inverter
Trojan L16H-AC 435Ah bank 4S  with 7' of 4/0 cable
24 volt system /  Need 3200Whs Daily
My System Install

ClassicCrazy

#3
Did you break in your new battery pack as the manufacturers have recommended ? You need to cycle them a few times before they will act properly - wonder if that may be part of the issues.

If you aren't taking enough load off of the batteries and they are basically floating for long period of time then the electrolyte can stratify meaning the acid is not all mixed up properly .

How far down do you draw the batteries every day ? Or do they sit in float for a long time ?  With the inverter off sounds like you have no load on them.

Larry
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

dcave44

Hi all ,
New reading . I hope the photo comes out in the right direction. has been given EQ 1 time a day to increase the SG . And this is the result . also adjust the EQ to 62.4v , the absorb  60v and the float to 55v . The system is off grip and only 1 mount . I'll be more careful not to drop the SG .
Thanks for you help .

sigp2101

If you have  4 Rolls 550 in series you cooking them at 58V bulk. Use 24V settings instead.
Off grid system:
3 X 230W 36V 8A SolarWorld in series,
Classic 150,
36V BB - 225Ah 6x6V Trojan T-105 T2,
3000W psw Inverter,
Fridge 159KWh/Y, 30W led lights, laptop, TV.