Steve,
Thanks very much for the IR image and the explanation and one possible
remedy. I had (mistakenly) always considered once the plates were
exposed to air there was always irreparable damage.
What camera are you using?
Thanks again,
Bill Loesch314 631 1094
-----------------------------------------From: "Steve Higgins"
To: "RE-wrenches"
Cc:
Sent: Wednesday July 18 2018 11:05:06AM
Subject: Re: [RE-wrenches] Electrolyte Dilution vs Voltage
Mac,
I don't think she diluted the battery, it sounds like she exposed
the tops of the plates to air and they are corroding.
See the attached picture... see where the bottoms of the batteries
are cooler than the rest?
With the batteries in this picture they plates have been exposed to
oxygen and the plates are corroding. That corrosion is adding
resistance, and causing heat build up within the battery. If this were
sulfation, you'd see a more even temp range within the entire battery.
My guess is she exposed a bit of the plates, the best way to get
this back, is to focus on full charges followed by short 15 to 20%
discharges... that'll help bring back what every capacity that can be
recovered.
To do this:
You charge to full... full absorb time and spot check spgs... you
should be in the 1.260+ range on your spgs.
You then discharge for 30-60 mins at the C/10 discharge rate...
this will be about 28 to 35 amps DC..
I would watch individual battery voltages during this discharge to
make sure you don't have a weak battery or cell within the battery.
After the 30-60 mins you then do another full recharge....
After 4-10 of these cycles you should see a capacity gain
If not then the capacity has probably been lost permanently.
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]
Steve Higgins ⋅ Technical Services Manager t +1.902.597.4020 m
+1.206.790.5840 f +1.902.597.8447 e [email protected] [16] [17]
[18] [19] [20] [21] [22] [23] [24] [25]
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On Wed, Jul 18, 2018 at 8:38 AM, Mac Lewis wrote:
Hello Wrenches,
I have a homeowner client that takes pretty good care of her
batteries. She has a 5 year old set of Interstate L16s (2 strings of
8). However, she recently didn't water them for longer than normal and
they gulped up more distilled water than usual (4 gallons). She was
unsure if any of the plates were exposed. She has reported that since
she added the water the battery bank has lost about 1.5-2V (48V bank)
of her bank voltage in the morning. She reported ~49.5V in the morning
before she added the water and now she is below 48V.
I have advised a good strong equalize charge to destratify the
electrolyte.
Will diluting the electrolyte make the voltage sag like that? Is
there any other advice you might give her until I can get up there?
Thanks
--
Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
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