[RE-wrenches] EG4 Equipment

Tue Feb 20 09:42:49 PST 2024

I have an LG RESU-10H Gen2 Type R battery that has discharged so far that the display will no longer turn on.  Apparently, there is a recovery process for this situation that involves using an LG-sanctioned charger that will properly manage the BMS throughout the recovery process.  I have access to the correct charger for this purpose.

However, I have searched the Internet and Youtube and cannot find any instructions that explain how to operate the charger and recover the LG battery.

Does anyone on this group have experience with this situation and can help?  Is there a service manual for the LG RESU battery that explains how to recharge it in this situation (again, can find nothing but the installation manual on the internet).

Many thanks for any insights.

Tom McCalmont

> On Feb 20, 2024, at 8:59 AM, Dave Angelini Offgrid Solar via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Someone asked about the loss on the discover AES rackmount. 
> 
> "The contactor is bi-stable so it doesn’t require extra holding current in either state. The ON state loss is 7.49mA."
> 
> https://discoverlithium.com/products/lithium-batteries/aes-rackmount
> 
> 
> 
> Also below is a response from Schneider on closing the loop with EG4.
> 
> 
> 
> Thanks for the feedback Dave.
> I visited Signature last year to offer training. The EG4 is available in the dropdown menu for BMS Setup in v1.18 InsightLocal firmware.
> Integration with XW Pro has worked well from what I have seen.
> Eric
>  
>  
>  
> Eric Bentsen
>  	 	
> Auburn, WA
> United States
>  <https://youtu.be/dux6kG13QWM>
>  <https://www.se.com/en/work/support/myschneider-app/>	
> Download mySchneider app <https://www.se.com/en/work/support/myschneider-app/>
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> Genera
> 
> Dave Angelini Offgrid Solar
> 
> "we go where powerlines don't"
>    <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/  <http://members.sti.net/offgridsolar/>
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> text 209 813 0060
>  
> -------- Original Message --------
> 
> Subject:
> Re: [RE-wrenches] EG4 Equipment
> Date:
> 2024-02-16 3:11 pm
> From:
> Dave Angelini Offgrid Solar via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>>
> To:
> RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>>
> Cc:
> Dave Angelini Offgrid Solar <offgridsolar at sti.net <mailto:offgridsolar at sti.net>>
> Reply-To:
> offgridsolar at sti.net <mailto:offgridsolar at sti.net>, RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>>
>  
> Howie, I think you should also look again at the Discover rack mount system in the link below. Nice 75 year old company that made it's name on Locomotive batteries. Their prices are way down around 14 K for 30Kwh with heaters. If you have not looked at Lynk2 their gateway closed loop into SMA, Schneider, Solark, Morningstar and a few others you should.
>  
> The only problems I have with Schneider are pretty easy and get resolved because I only use them and take all of the training. Conext Insight is a home run for my clients. Schneider also hired me to test their first closed loop system with LG back in 2017 and it still is working fine.
>  
> https://discoverlithium.com/products/lithium-batteries/aes-rackmount
>  
>  
> Dave Angelini Offgrid Solar
> "we go where powerlines don't"
>    <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/  <http://members.sti.net/offgridsolar/>
> e-mail  offgridsolar at sti.net <mailto:offgridsolar at sti.net>
> text 209 813 0060
>  
> On 2024-02-16 2:02 pm, Michael Morningstar via RE-wrenches wrote:
> 
> We gave EG4 and Signature another chance after promises from their dealer oriented support department that we could expect better service from them. We had an EG4 BMS crap out a couple months ago after only a few months. Lots and lots of communications with Signature and we still don't have a BMS or replacement battery. It's been a shit show with them. I think we are going to remove them and install 3rd party BMS's and find some use for them. Maybe donate them. We've only had luck with Schneider/Discover pairings in closed loop. A large system we did with Sol-Arks never really worked in Closed loop, despite Discover coming to the site. Most likely it's a Sol-Ark issue, but we've reached Sol-Arks technical expertise limits. Even with Schneider/AES, there have been some issues that are causing me to re-consider Li for offgrid. I just had a conversation this morning with a long time off-grid pro and he said the same thing. It used to be, we'd install a wet lead acid bank and then ten years would pass before hearing from the client when it was time for another bank. Sometimes fifteen years. Our call backs with systems over the last ten years, first with a decline in equipment quality and then the switch to Li are costing us too much money and causing a lot of heartburn for our clients. Rant Over
>  
> On Fri, Feb 16, 2024 at 12:57 PM Howie Michaelson via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>> wrote:
> Hi All,
>  
> I've searched the archives for info pertaining to EG4 inverters and batteries. The comments have been mostly positive.  I have stayed away from EG4 until now in part, for the reason the Michael Morningstar suggested last June - that is, they seemed very oriented to the DIY market and not real serious contenders in the lasting marketplace. However, I was at RE+ Boston this week and was quite surprised to see that the EG4 18k inverter is, for all I could tell, identical to the Fortress Envy 12k, in both physical layout as well as menu structure. I have very limited experience with the Envy (having just installed my 1st one last week, in order to compare it to the Sol-Ark 15). I don't have any thoughts about it yet, except that the font on the screen is quite small and the opening screen is not as intuitive as the Sol-Ark, but that might just take familiarizing myself more to the Envy (and/or the EG4).
>  
> My question is, for folks who have had either the Envy or the EG4 inverters installed for a decent period of time, what is your current take on their functionality, durability, and for the EG4, the quality of support? Also, what experience have folks had similarly with the EG4 LLI batteries? I'm not unhappy with the Sol-Ark or in general the Fortress eVault Max battery, but there are some attractive things about the Envy and potentially the EG4 18k, and the price point and seemingly smart configuration of the EG4 LLI batteries are certainly eye-catching. 
>  
> I'm also currently starting to lean toward using Lithium batteries and inverters from the same manufacturer, as I'm growing weary of the mismatching firmware updates that are causing somewhat frequent issues between the 2 components. Although the inverter/battery integrated units (i.e. Sonen, Tesla, etc.) don't seem ideal, since the market is so volatile at the moment. If one component fails, I'd like the option to replace it with a different brand without having to replace the other component as well. Using the same manu doesn't necessarily cut down the problems, but it certainly will help in the troubleshooting process by hopefully having less of the "not my problem" or "we haven't seen that problem" responses from tech support. 
>  
> I really don't like making forays into bleeding-edge technologies, so I'm hoping to gain some experienced insight.
>  
> Thanks,
> Howie Michaelson
> Sun Catcher
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> Michael Morningstar
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> Morningstar Electric
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