<table><tr><th>From:</th><th>jeffrey E. &lt;jeevacation@gmail.com&gt;</th></tr><tr><td>Sent:</td><td>Friday, June 22, 2018 9:29 PM</td></tr><tr><td>To:</td><td>Richard Kahn</td></tr><tr><td>Subject:</td><td>Re: GS) Prosolar circuit boards</td></tr></table>

why only now? this corossion is quite far along <=div>

On Fri, Jun =2, 2018 at 11:26 PM, Richard Kahn < <mailto
><=span> wrote:

today i spoke with Brad, Brian and Dan from Prosolar

Acquion intellectual property was purchased by Blue Sky En=gery (they believe Chinese owner with engineering operation based in Europ=) (Germany?)

Blue Sky Energy was a competitor of Acquion and was=very popular in 2015 and 2016. They were financed by bill gate= and kleiner perkins (see link below)

Acquion focused on salt wa=er batteries which have become out of favor as Tesla has made Lithium Ion =atteries the most current and frequently used solution for solar

On GSJ what failed was our 100 Series Circuit board w=ich he currently have 12 Each of our 12 battery stacks have a 10= Series circuit board which are not sold separately and are no longer prod=ced by Blue Sky

currently 5 of 12 are in really bad shape and 7 =re still functioning but need to be cleaned up Prosolar said tha= this damage occurred due to salt water which made these compromised post =urricane when the door of the quinset hut came off..

I was tough=and asked why are we only now hearing about this 9 months after hurricanes=if they were doing monthly service calls..

I also informed=pro solar that their invoice says that warranty is either 3 or 5 years..</=iv>

Prosolar tried to source these boards via wholesale=s with very little success as they have all been purchased I ask=d if we can use other company circuit boards and they replied no..

Blue Sky Energy engineers (see email below) believe that =hese boards are not needed and their recommendation is to =i pass boards and change parameters and settings of other equipment <=iv>

Prosolar now believes that all other issues they struggled wi=h were related to these boards...and that system will work better wi=hout circuit boards

I asked if Blue Sky could do work with Prosolar an= was told they are not available for contract but their engineers would wa=k Dan through the work..

darren is scheduled to s=eak with glidden monday 9:30am and then write legal letter pleas= advise on next steps.. thank you

Richard Kahn

HBRK Associates Inc.
575 Lexington <https://maps.google=com/?q=575+Lexington+Avenue+4th+Floor+New+York,+NY+10022&entry=gma=l&source=g>
Avenue 4th Floor <https://maps.google.co=/?q=575+Lexington+Avenue+4th+Floor+New+York,+NY+10022&entry=gmail&=mp;source=g>
New York, NY <https://maps.google.com/=q=575+Lexington+Avenue+4th+Floor+New+York,+NY+10022&entry=gmail&am=;source=g>
10022 <https://maps.google.com/?q=3D575+Lexington+Avenue+4th+Floor+New+York,+NY+10022&entry=gmail&=ource=g>
tel ██████████
fax ██████████
cell ██████████

https://www.greentechmed=a.com/articles/read/aquion-the-bill-gates-and-kleiner-perki=s-funded-advanced-battery-startup#gs.KpS4PR4 <https://www.greentechme=ia.com/articles/read/aquion-the-bill-gates-and-kleiner-perkins-funded-adva=ced-battery-startup#gs.KpS4PR4>

Begin forwarded message:

- Subject (top): FWD: Re: AW: circuit boards
- From (top): redacted (mailto hidden)
- Date (top): June 22, 2018 at 3:13:5= PM EDT (as shown)
- To (top): single recipient (name/address redacted)
- Top-level body: "FYI"

- Forwarded / Original message (visible header):
  - Subject: Re: AW: circuit boards
  - From: redacted (mailto shown in HTML)
  - Date: 6/22/18 11:26 am
  - To: single recipient (name partly visible but redacted)
  - Cc: multiple recipients (several addresses/names redacted)

- Visible content snippets / artifacts:
  - HTML fragments present: </pan>, <a href="mailto:...">, target="_blank"
  - Many email addresses and names blacked out with redaction bars
  - Several mailto links and malformed formatting visible

- Surrounding contextual text provided separately:
  - "On our Origonal install we bypassed that contactor becaus= we did not require a emergency stop. how does that bypass the circuit boa=d to eliminate the BMS?"

- Key takeaway: email thread about "circuit boards" forwarded for FYI; original message sent 6/22/2018 with multiple CCs and heavy redaction of addresses/names.

On our Origonal install we bypassed that contactor becaus= we did not require a emergency stop. how does that bypass the circuit boa=d to eliminate the BMS?

On Wed, Jun 20, 2018 at 3:41 AM Stefan Schlagl wrote:

Hi Dan,

<=span>

yes, that's correct=

Under to top=plastic cover of the M-Line you will find near the positive battery pole a=contactor. The only thing you have to do is to change position of the red =iring according to the attached picture.

Kr=/p>

Stefan

</=pan>

Key entities in this email include:

*   Sender: Dan Chrisman
*   Recipients: Brian Walden, Lyle Gold, Thomas Krausse, Stefan
*   Date: Monday, 18. Juni 2018 19:15
*   Subject: Re: AW: circuit boards

Good afternoon, seems like our best option to b=pass the boards. Do you have a basic

schematic for this?

On Thu, Jun 14, 2018 at 6:33 PM Brian Walden &I

<mailto:

>> wrote:

Excellent news Stefan. Thank you for the email.=C2

Dan is headed over to the site next Tues.. I ho=e to connect you two beforehand and possibly while he's onsite. Th= existing array consists of SMA Sunnyboy inverters and Sunny Island contro=lers.

Dan, please reach out to Stefan when you get ba=k from St.Martin.

Regards, <3

Brian Walden
ProSolar America, DOO
c.=██████████████<tel:███████████████████████</<=>

<mailto:

On Jun 14, =018, at 5:12 PM, Stefan Schlagl > wrote=

Hi Brian,

hello Lyle,

<=iv>

I'm sorry for my late replay.

Yes, it is possible to bypass the circu=t board within the M100. We've also done this several time because=as Lyle mentioned already the modern inverter technology is good enough to=manage this.

If you need help regarding bypassing t=e PCB please let us now.

=/span>

Kind regards

Stefan

Von: Lyle Gold
<=trong>Gesendet: Donnerstag, 7. Juni 2018 23:54

The image shows an email to Rian, cc'ing Dan Chrisman, Thomas Krausse, and Stefan Schlägl. The sender's email address is redacted.


First of all, thank you for=contacting us. Did you try calling me today? I'm sorry I w=sn't able to answer. Please feel free to call back, I'll keep my m=bile phone handy. I don't think there's much support to=be had at Aquion or the Chinese buyer of the assets. We still have some Aq=ion stacks left in stock (and continue to sell, service & warranty the=), but we have for the most part switched to the Aquion competitor we met =everal years ago. We feel that their saltwater battery is more advanc=d and higher quality. They now have at least one of the Aquion Engineering=leadership working for them. Their batteries are also higher energy densit=. I have attached a datasheet.

Ge=ting back to the BMS on top of the old M100s, unfortunately we sold our la=t one I believe. I have copied Dr. Thomas Krausse and Stefan Schlaegl on t=is mail to fact-check everything I say.

We have been building systems without that particular BMS for severa= years. We find that the functionality these days in the inverters and oth=r power management equipment on the market is more than adequate to manage=12 or more stacks. And I believe in some cases you can simply bypass=that board Stefan is that right?

One thing you could do would be to disassemble the five=M100s and individually check the quality of each stack and get rid of the =utliers. The remaining 'good' batteries could then be config=red with either the existing charger(s) and inverter or new components as =eeded. This would take some amount of expertise and effort.</=>

Regards,</=>
Lyle Gold
VP International Business Development

## Fornacher Strasse 12

- Address: Fornacher Strasse 12, 4870 Voecklamarkt, Austria (Google Maps links)
- Website: http://www.bluesky-energy.eu/
- Skype: Idaho_austria
- Slogan: The Safest and Most Environmentally-friendly Battery in the World!
- Contact (shown but redacted): Tel: [redacted]; Office: [redacted]; Mail: [redacted] (mailto: [redacted])
- Email header:
  - From: [redacted] <[redacted]>
  - Sent: Thursday, June 7, 2018 11:20 AM
  - To: [redacted] <[redacted]>
  - Cc: [redacted]
  - Subject: circuit boards
- Embedded image placeholders: <image001.png>, <image002.png>

=A0

I'm hoping you can answer my question about the availabi=ity of circuit boards or controls mounted to the top of the Aquion M110-LS=3 or a M110-L083. We have 5 installed on on a remote island and these have=severe corrosion but still have some functionality.

## Fornacher Strasse 12 (cont.)

Any assistance in this matter is greatly appreciated.=/p>
=A0

Regards,

=A0

Brian Walden

ProSolar America. LLC

Director of Operations

plea=e note

The information contained in this communication is confi=ential, may be attorney-client privileged, may constitute inside inform=tion, and is intended only for the use of the addressee. It is the prop=rty of JEE

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