[RE-wrenches] Checking Specific Gravity, correct procedure.

[Dave Angelini Offgrid Solar]

Ummm, I think you need to add run a normal battery charge cycle first to
your list. Pretty dangerous to EQ a bank without doing bulk/absorb first,
especially if you are at a clients house! You really do not know the state
of the battery!  

Dave Angelini Offgrid Solar
"we go where powerlines
don't"
http://members.sti.net/offgridsolar/ [1]
e-mail offgridsolar at sti.net
[2]
text 209 813 0060

On Tue, 23 Feb 2021 20:50:58 -0800, William Miller 
wrote: US Batteries L16s. 

 William Miller  www.millersolar.com   
 On Feb
23, 2021, at 5:04 PM, Jay  wrote:

    Hi William   I'm wondering what
specific batteries you did this test on   Thx Jay 
 On Feb 23, 2021, at
4:32 PM, William Miller  wrote:

   Open the link. It's all there. 


William Miller  www.millersolar.com   
 On Feb 23, 2021, at 2:32 PM, Howie
Michaelson  wrote:

    William, How much of a difference did you see in
readings after an equalize charge before adding water vs. after adding
water and doing a short bulk charge?
Howie
 Howie Michaelson
Sun
Catcher
NABCEP Certified Solar PV Installer(tm)
Solar Electric & Heat Pumps
Systems Sales  border-left: 1px #ccc solid; padding-left: 1ex;">  


Wrenches: 

If you recall, I had asked the question: After equalizing
batteries, should I check SG before or after watering? I performed the test
I had promised to do. The answer is, add water first. 

Here is the report
on my test: Link [4] 

Conclusion: Here is the proper order of steps to
check Specific Gravity: 

1. Verify water level in cells is above the
moss-guard. Add water only to bring water to top of moss-guard if needed.


2. Run Equalizing charge. 

3. Add distilled water to all cells to bring
electrolyte to recommended level.  

4. Apply bulk charge voltage to
batteries for 30 minutes to mix electrolyte. 

5. Test and record Specific
Gravity. 

It seems obvious now, but I had to test it out... 

William


Miller Solar 

17395 Oak Road, Atascadero, CA 93422 

805-438-5600


www.millersolar.com [5] 

CA Lic. 773985 

   
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