[RE-wrenches] Anyone in the Maryland region want lots of used solar panels?

[Dave Tedeyan via RE-wrenches]

If anyone in the Maryland region is interested in lots of used solar panels
in the 235-300w range, send me a direct message. Sounds like they are
upgrading some older sites. Here is a message I received from an old friend:

As part of some of our upcoming portfolios there are old panels that we
might be removing as a favor to the customers or to increase productivity.
A couple of them are just 20-50 panels, but there is one that is about 1900
panels.  The panels are generally old though and in the 235W-300W range.
My question to you as someone who does small scale solar and deeply cares
about the environmental portion, is do you know if there are groups that
would want these older panels.  I have talked to some of the larger
recyclers and they don't want these to use as panels but would obviously be
happy to have us pay them to recycle.  I wasn't sure if you were aware of
any groups that would want to have these older panels and actually use them
for installation.  These are in the Maryland region, but would be happy to
have any contacts.

-- 
[image: Logo] 
Dave Tedeyan, P.E.
Owner | Sungineer Solar
p: he | him | his
a: 1653 Slaterville Rd. | Ithaca, NY 14850
w: www.sungineersolar.com 
c: (607) 270-0370
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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[Glenn Burt via RE-wrenches]

Again, just because a battery manufacturer says they are compatible with an 
inverter, does not mean the inverter manufacturer agrees, supports it, or will 
answer service calls regarding it.Not a risk I am willing to take.-GlennSent 
from my 'smart'phone, so please excuse typos and spelling errors.-- 
Original message--From: Dave Angelini Offgrid Solar via RE-wrenchesDate: 
Fri, Mar 1, 2024 8:03 PMTo: RE-wrenches;Cc: Dave Angelini Offgrid 
Solar;Subject:Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's
AES is closed loop with 7 inverter manufacturers (not Outback and I do not know 
why) including SMA. Not sure on the particulars but you should check them out 
with Lync2 interface. I just use them closed loop with XW and they can charge 
40% faster.
 
https://discoverlithium.com/products/lithium-batteries/aes-rackmount

 
Dave Angelini Offgrid Solar
"we go where powerlines don't"
  https://offgridsolar1.com/ 
e-mail  offgridso...@sti.net
text 209 813 0060


On 2024-03-01
 4:43 pm, Glenn Burt via RE-wrenches wrote:


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I recently went through this wxwrcise with an old customer of mine as well.
I spent a lot of time researching options. Manufacturers and conversations with 
SMA regarding their support of a conversion to Life storage.
Bottom line for me was that SMA does not support any lithium battery 
manufacturer available in the US.
I stuck with exact replacement batteries
 for those that were exhausted, Concorde AGM's.
 

-Glenn
Sent from my 'smart'phone, so please excuse typos and spelling errors.




 
-- Original message--
From: Peter Giroux via RE-wrenches
Date: Fri, Mar 1, 2024 3:52 PM
To: 'RE-wrenches';
Cc: pgir...@mindspring.com;
Subject:[RE-wrenches] Older Sunny Islands charging newer Lithium's
 



My fellow wrenchers. Have sought help from SMA but they just defer to owner's 
manuals and the older batteries listed.. I have a customer with two SMA 5048's, 
roughly 11 years old and appear to be working fine. Customer wants to move to 
LIPO batteries and keep his SMA's. Has anybody made these transitions and how 
did you do it, not sure the SMA programing for LIPO's works the way Lithium's 
need. Any and all help and ideas appreciated.
 
Thx
Peter Giroux
American Solar & Alternative Energy Solutions inc






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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[Dave Angelini Offgrid Solar via RE-wrenches]

AES is closed loop with 7 inverter manufacturers (not Outback and I do 
not know why) including SMA. Not sure on the particulars but you should 
check them out with Lync2 interface. I just use them closed loop with XW 
and they can charge 40% faster.


https://discoverlithium.com/products/lithium-batteries/aes-rackmount

Dave Angelini Offgrid Solar
"we go where powerlines don't"
   [1]https://offgridsolar1.com/ [2]  [1]
e-mail  offgridso...@sti.net
text 209 813 0060

On 2024-03-01 4:43 pm, Glenn Burt via RE-wrenches wrote:

I recently went through this wxwrcise with an old customer of mine as 
well.
I spent a lot of time researching options. Manufacturers and 
conversations with SMA regarding their support of a conversion to Life 
storage.
Bottom line for me was that SMA does not support any lithium battery 
manufacturer available in the US.
I stuck with exact replacement batteries for those that were exhausted, 
Concorde AGM's.


-Glenn
Sent from my 'smart'phone, so please excuse typos and spelling errors.

-- Original message--
From: Peter Giroux via RE-wrenches
Date: Fri, Mar 1, 2024 3:52 PM
To: 'RE-wrenches';
Cc: pgir...@mindspring.com;
Subject:[RE-wrenches] Older Sunny Islands charging newer Lithium's

My fellow wrenchers. Have sought help from SMA but they just defer to 
owner's manuals and the older batteries listed.. I have a customer with 
two SMA 5048's, roughly 11 years old and appear to be working fine. 
Customer wants to move to LIPO batteries and keep his SMA's. Has 
anybody made these transitions and how did you do it, not sure the SMA 
programing for LIPO's works the way Lithium's need. Any and all help 
and ideas appreciated.


Thx

Peter Giroux

American Solar & Alternative Energy Solutions inc
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Links:
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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[Glenn Burt via RE-wrenches]

I recently went through this wxwrcise with an old customer of mine as well.I 
spent a lot of time researching options. Manufacturers and conversations with 
SMA regarding their support of a conversion to Life storage.Bottom line for me 
was that SMA does not support any lithium battery manufacturer available in the 
US.I stuck with exact replacement batteries for those that were exhausted, 
Concorde AGM's.-GlennSent from my 'smart'phone, so please excuse typos and 
spelling errors.-- Original message--From: Peter Giroux via 
RE-wrenchesDate: Fri, Mar 1, 2024 3:52 PMTo: 'RE-wrenches';Cc: 
pgir...@mindspring.com;Subject:[RE-wrenches] Older Sunny Islands charging newer 
Lithium'sMy fellow wrenchers. Have sought help from SMA but they just defer to 
owner’s manuals and the older batteries listed.. I have a customer with two SMA 
5048’s, roughly 11 years old and appear to be working fine. Customer wants to 
move to LIPO batteries and keep his SMA’s. Has anybody made these transitions an
 d how
 did you do it, not sure the SMA programing for LIPO’s works the way Lithium’s 
need. Any and all help and ideas appreciated. ThxPeter GirouxAmerican Solar & 
Alternative Energy Solutions inc___
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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[Mac Lewis via RE-wrenches]

Hi Peter,

The Sunny Islands will work with Lithium, but there can be challenges.  The
Blue Ion to Sunny Island communication works really well, you need a Namaka
box for that.  This would be a great but expensive way to go.

The difficulties with Sunny Island and no communication to BMS is when you
need the Sunny Island to start the generator at a specific state of charge
or also know when to shut down.  The open loop parameters seem to work just
fine for charging.

One cheap solution that I think would work well is to add a Victron Smart
shunt, Cerbo and perhaps a screen.  You can manipulate the SOC algorithm in
the smart shunt to work well and turn the generator start duties over to
the Cerbo.  You may also be able to externally trigger the Sunny Island to
shut off (haven't looked deeply into this).

Have a good weekend!




On Fri, Mar 1, 2024 at 3:10 PM Jerry Shafer via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> SMA and Li Tech
> I have replaced quite a few batteries with LIPh and the only thing on the
> 4048's is setting a temp sensor at default 77 Degrees and on the 5048"s as
> i recall can be closed loop with fortress and Blue Planet.
> Fun Times
>
> On Fri, Mar 1, 2024 at 12:52 PM Peter Giroux via RE-wrenches <
> re-wrenches@lists.re-wrenches.org> wrote:
>
>> My fellow wrenchers. Have sought help from SMA but they just defer to
>> owner’s manuals and the older batteries listed.. I have a customer with two
>> SMA 5048’s, roughly 11 years old and appear to be working fine. Customer
>> wants to move to LIPO batteries and keep his SMA’s. Has anybody made these
>> transitions and how did you do it, not sure the SMA programing for LIPO’s
>> works the way Lithium’s need. Any and all help and ideas appreciated.
>>
>>
>>
>> Thx
>>
>> Peter Giroux
>>
>> American Solar & Alternative Energy Solutions inc
>> ___
>> List sponsored by Redwood Alliance
>>
>> Pay optional member dues here: http://re-wrenches.org
>>
>> List Address: RE-wrenches@lists.re-wrenches.org
>>
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>>
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>> other:
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-- 



Mac Lewis

*"Yo solo sé que no sé nada." -Sócrates*
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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[Jerry Shafer via RE-wrenches]

SMA and Li Tech
I have replaced quite a few batteries with LIPh and the only thing on the
4048's is setting a temp sensor at default 77 Degrees and on the 5048"s as
i recall can be closed loop with fortress and Blue Planet.
Fun Times

On Fri, Mar 1, 2024 at 12:52 PM Peter Giroux via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> My fellow wrenchers. Have sought help from SMA but they just defer to
> owner’s manuals and the older batteries listed.. I have a customer with two
> SMA 5048’s, roughly 11 years old and appear to be working fine. Customer
> wants to move to LIPO batteries and keep his SMA’s. Has anybody made these
> transitions and how did you do it, not sure the SMA programing for LIPO’s
> works the way Lithium’s need. Any and all help and ideas appreciated.
>
>
>
> Thx
>
> Peter Giroux
>
> American Solar & Alternative Energy Solutions inc
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
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> List Address: RE-wrenches@lists.re-wrenches.org
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> other:
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>
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Re: [RE-wrenches] Older Sunny Islands charging newer Lithium's

[William Miller via RE-wrenches]

Peter:



I have been working at interfacing a set of SIs with LiFPO4 batteries.  It
is documented here

.



Because the Sis are so SOc-centric they can be hard to intergrate with
Lithium.



William



Miller Solar

17395 Oak Road, Atascadero, CA 93422

805-438-5600

www.millersolar.com

CA Lic. 773985





*From:* RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] *On
Behalf Of *Peter Giroux via RE-wrenches
*Sent:* Friday, March 1, 2024 12:53 PM
*To:* 'RE-wrenches'
*Cc:* pgir...@mindspring.com
*Subject:* [RE-wrenches] Older Sunny Islands charging newer Lithium's



My fellow wrenchers. Have sought help from SMA but they just defer to
owner’s manuals and the older batteries listed.. I have a customer with two
SMA 5048’s, roughly 11 years old and appear to be working fine. Customer
wants to move to LIPO batteries and keep his SMA’s. Has anybody made these
transitions and how did you do it, not sure the SMA programing for LIPO’s
works the way Lithium’s need. Any and all help and ideas appreciated.



Thx

Peter Giroux

American Solar & Alternative Energy Solutions inc
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[RE-wrenches] Older Sunny Islands charging newer Lithium's

[Peter Giroux via RE-wrenches]

My fellow wrenchers. Have sought help from SMA but they just defer to
owner's manuals and the older batteries listed.. I have a customer with two
SMA 5048's, roughly 11 years old and appear to be working fine. Customer
wants to move to LIPO batteries and keep his SMA's. Has anybody made these
transitions and how did you do it, not sure the SMA programing for LIPO's
works the way Lithium's need. Any and all help and ideas appreciated.

 

Thx

Peter Giroux

American Solar & Alternative Energy Solutions inc

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Re: [RE-wrenches] Battery Electrolyte Level Measuring

[Mark Downing via RE-wrenches]

I found these photo sensors on Wish for $2.69.
Detection distance is adjustable from 3 to 80cm.  Run on 5V supply.
I bought a couple and they work great.  Cheap enough to buy a few and play with 
them.
I wonder if they will detect the surface of a liquid?
If so, this could easily be used by mounting it through a plastic disk and 
touching it to the cell opening.
(Uh oh, looks like I just gave myself another job . . .)
[Adjustable, Cars, proximity, Robot]

From: RE-wrenches  On Behalf Of Ray 
Walters via RE-wrenches
Sent: Thursday, February 29, 2024 5:02 PM
To: re-wrenches@lists.re-wrenches.org
Cc: Ray Walters 
Subject: Re: [RE-wrenches] Battery Electrolyte Level Measuring


Hi William;

I agree with your original premise that checking levels is difficult by eye.  
Also, I would add that many of my clients chronically over fill the cells, 
leading to acid loss and severe corrosion of the connectors, battery box, and 
floor.

Your float is an interesting idea, but personally I think you're inviting more 
acid contact not less, by putting the probe down into each cell.  This is 
similar to checking specific gravity.   I think a no contact method, like a 
laser measuring device would be the way to go.  I see several on Amazon in the 
$25 range.  I have a Bosch that's quite accurate; I tried it on some bottles 
with fluid in them, and it seemed to work well.  I'll try and remember to take 
out with me on the next job with FLA.

Ray Walters
Remote Solar
On 2/29/2024 2:12 PM, William Miller via RE-wrenches wrote:
Friends:

Thanks to everyone who responded to the original question.  The information was 
valuable but did not directly approach the question.  I apologize if my replies 
hinted at frustration.  I know everyone is trying to help.

This subject is important enough to me that I thought I’d take another run at 
explaining what I am trying to accomplish:

I do not like looking into battery cells.  It is dangerous.  With some of the 
larger battery banks looking into the cell requires climbing up onto and 
kneeling on the tops of the batteries, increasing the danger and adding 
discomfort and future wardrobe malfunctions.  Determining electrolyte level by 
looking into cells gives inaccurate results.

Safety glasses help but spilling acid on the unprotected area of my face around 
the glasses is not ideal.  A face shield provides better protection but when 
bending my neck sharply downwards the shield bumps into my chest, is 
uncomfortable and obstructs my view.

There has to be a better way!

Here is where I am heading with an idea to provide a safer way to measure 
electrolyte levels.  I have mocked up a prototype in my kitchen to illustrate.



The idea is a float with a scale attached.  The scale is calibrated to show the 
desired fluid level and how much too low or high the level is.

I was hoping someone had already gone down this road and I could steal- I mean 
learn from- their ideas.

I will keep trying to create something viable.  Already I have something I can 
use, it’s just a bit hokey.  Ideally whatever I conjure up can also be deployed 
while filling batteries by whatever means you have at hand so the process can 
be safer, quicker and more accurate.  Everyone who works with flooded batteries 
needs this.

I hope this explanation makes more sense.

William

PS: I have seen electrolyte level gauges on the internet.  None that I have 
seen quite fit the bill.  Here is 
one
 that is not adjustable but comes in two fixed levels.  If you know of a 
product that does what I need, or at least can spark some creativity, please 
let me know.

PPS:  Ideally whatever I come up with is cheap enough that one or two can be 
left in place to allow checking levels at a glance.

Wm

Miller Solar
17395 Oak Road, Atascadero, CA 93422
805-438-5600
www.millersolar.com
CA Lic. 773985





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