[RE-wrenches] Lithium battery aging

[Jay via RE-wrenches]

Hi all

I hope some of you might know the answer to these questions. 

When a Lithium battery ages, is its voltage reduced?  If so by how much?  

Is the C rate reduced?

Is the only change lower amp hours?

And finally how does the BMS determine this reduction?  How does it know it’s 
lower capacity without doing a full to empty test?

The questions arise from a conversation about adding new to old batteries. 

Just trying to learn more. 

Thanks

Jay





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Re: [RE-wrenches] Truss finder

[Kristopher Schmid via RE-wrenches]

Thanks William!  Laughed out loud at the first picture!

Shine On!

Kris Schmid
Legacy Solar, LLC
137 West 1st Avenue
Luck, WI 54853
www.legacysolar.com
715-653-4295
NABCEP Certified PV Installation Professional
Licensed Wisconsin Master Electrician
BSEE

On Sun, Apr 16, 2023, 10:12 AM Kristopher Schmid 
wrote:

> I am considering buying a deep scanner for locating trusses.  Any
> recommendations or testimonials?
>
> Shine On!
>
> Kris Schmid
> Legacy Solar, LLC
> 137 West 1st Avenue
> Luck, WI 54853
> www.legacysolar.com
> 715-653-4295
> NABCEP Certified PV Installation Professional
> Licensed Wisconsin Master Electrician
> BSEE
>
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Re: [RE-wrenches] Truss finder

[frenergy via RE-wrenches]

Kris,

            Seems there was discussion about scanners before and I 
don't remember anyone saying they found one that was reliable especially 
with varying roofing materials.  Our current method is fist-thumping to 
get in the area of the rafter, drill exploratory hole then use the 
Chiptoolz rafter finder:


https://www.amazon.com/Rafter-finder-Stud-Center-line-Locator/dp/B07DWFB3XC/ref=sr_1_2?crid=15LCS376NVC9U&keywords=rafter+finder+tool&qid=1681669313&sprefix=rafter+finder%2Caps%2C333&sr=8-2

Its stupid simple low-tech but works great.  Could be there is now a 
reliable hi-tech scanner that works in all cases.


Bill

On 4/16/2023 8:12 AM, Kristopher Schmid via RE-wrenches wrote:
I am considering buying a deep scanner for locating trusses.  Any 
recommendations or testimonials?


Shine On!

Kris Schmid
Legacy Solar, LLC
137 West 1st Avenue
Luck, WI 54853
www.legacysolar.com 
715-653-4295
NABCEP Certified PV Installation Professional
Licensed Wisconsin Master Electrician
BSEE

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--
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.(shipping)
5575 Genesee Rd. (USPS, UPS)
Taylorsville, CA 95983
530.284.1925 Office/ 530.258.1641 Cell
CA Lic 874049
Solar powered since 1982


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Re: [RE-wrenches] Truss finder

[William Miller via RE-wrenches]

[image: Hammer | MC Systems]



Plus



[image: chiptoolz | Rafter Finder]



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 *Kristopher Schmid via RE-wrenches
*Sent:* Sunday, April 16, 2023 8:12 AM
*To:* RE-wrenches
*Cc:* Kristopher Schmid
*Subject:* [RE-wrenches] Truss finder



I am considering buying a deep scanner for locating trusses.  Any
recommendations or testimonials?

Shine On!

Kris Schmid
Legacy Solar, LLC
137 West 1st Avenue
Luck, WI 54853
www.legacysolar.com
715-653-4295
NABCEP Certified PV Installation Professional
Licensed Wisconsin Master Electrician
BSEE
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[RE-wrenches] Truss finder

[Kristopher Schmid via RE-wrenches]

I am considering buying a deep scanner for locating trusses.  Any
recommendations or testimonials?

Shine On!

Kris Schmid
Legacy Solar, LLC
137 West 1st Avenue
Luck, WI 54853
www.legacysolar.com
715-653-4295
NABCEP Certified PV Installation Professional
Licensed Wisconsin Master Electrician
BSEE
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