Hi Jamie and others.
Thanks for the conformation and the information.
Another system installed badly. Hard to give bad news to people.
Thanks,
jay
peltz power
On Sep 4, 2008, at 5:42 AM, James Surrette wrote:
Morning Jay,
I don't have a lot of good news for you - but maybe others do?
Years ago, I visited a commercial fishing client that had a 6 week
old 32VDC bank of batteries that were "not performing". Once we
reviewed, we noticed a tap 6 cells in.....for 12V radios. Boat had
been out for a 6 week run, which meant 6 weeks of charging at
~2.3VPC and the 10 non tapped cells were toasted (red cases were
actually black). Of course, client wanted warranty but that is
another story.
Your only hope is to separate the "low" 12V bank and charge to 100%
SOC. Then charge the "hi" 12V bank to 100% (probably already there
or beyond). Finally, marry the banks again and "balance" with a
2.35 - 2.4VPC until cell voltage stabilizes. Current acceptance
will be low but voltage will ultimately stabilize across the bank.
The problem is, the "low" bank has been undercharged for 2 years and
the "hi" bank has been severely overcharged. As a result the
capacity / corrosion differences between the two "sides" will be
great - leading to charging difficulties going forward, which may
result in the bank needing to be replaced. However, I would
recommend attempting to bring the bank into line before replacing.
I hope this is of assistance,
Jamie
James Surrette
Surrette Battery Co. Ltd
1 Station Rd.
Springhill, NS, CAN
B0M 1X0
Direct: 902.597.4027
Fax: 902.597.8447
>>> jay peltz <[EMAIL PROTECTED]> 09/04/08 1:25 AM >>>
HI All,
A guy has 1/2 loaded his big surrette 24v battery, yep put 12v loads
onto only one side of the 24v battery.
Now after 2 yrs 12v side is low voltage, 24v side is boiling like
crazy.
System is charged via SW4024, big genny and good size array.
so my question is can/should I
1. remove the 12v by installing a Vanner or similar.
2. put a 12v charger onto the lower 12v side to put an equal charge
into the batteries.
( I have never had success trying to charge up a highly unbalanced
battery)
thanks,
jay
peltz power
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