EG4 LifePower4 Batteries: Exploring BMS Communications -Tech Chat

Matt with Signature Solar Technical Support breaks down how to set up BMS communications from an LifePower4 48v battery to a Growatt inverter.
Our second installment of "Tech Chats" which features our fabulous technical support team here at Signature Solar. Let us know what you think and what other videos you'd like to see from them going forward in the comments below.
www.signaturesolar.com
LifePo4 Battery: shop.signature...
Growatt 5000ES Inverter: www.signatures...
--------------------------------------------------------------
Recommended Solar Panels:
signaturesolar...
Solar Panel Mounting Hardware:
signaturesolar...
--------------------------------------------------------------
Recommended Solar Batteries:
EG4-LL: signaturesolar...
EG4 Lifepower4: signaturesolar...
--------------------------------------------------------------
Recommended Solar Inverters:
EG4 18KPV Hybrid Inverter | All-In-One Solar Inverter:
signaturesolar...
EG4 6000XP Off-Grid Inverter
signaturesolar...
--------------------------------------------------------------
Need additional wiring or system components for your DIY Solar Project?
signaturesolar...
signaturesolar...
Simplify going solar with our kits & bundles: signaturesolar...

[@davidschultz9980]

To the negative comments… Give them a break. This is free content that most likely will help someone. If you were that ‘someone’ I bet you are happy to learn what was offered. I’ve done video production for years. Yes, they can do things better. I’m sure they will get better with constructive criticism. Not with mudd slinging garbage comments. Matt, listen to the feedback that makes you a better teacher. Keep up the good work. 👍

[@TK-123]

Dave S. It takes just a few minutes to set up a good presentation, like having the camera on the display and not sideways. That is pathetic for a company that can’t seem to want to be bothered. James does the same thing with his videos so it may be in their culture. If you’ve done video production for years and can’t see the benefits of doing good work, well I expect I know why..

[@corba197]

Matt has been great to work with directly, on the phone & I appreciate his willingness to get before the camera & critics to help us out! When SS has the experience Will P does at producing videos, I am sure things will be smoother. Thanks Matt!

[@TK-123]

@Richard from Signature Solar Richard, I love what signature Solar is doing. I love how you guys bend over backwards with your customer support. You even quote me on your web site. We just ask more considerations be implemented on the details going forward as the competition in this industry is about to get fierce..

[@joeytyndale]

Thank you so much! The manual is downright incorrect about some of this information and I would never have gotten this working without this video. Much appreciated!

[@TK-123]

I reviewed the video and it was straightforward easy to follow. Thank you.

[@Wrenchen-with-Darren]

Thanks for keeping this simple. I am just getting ready to connect my system, so this is reassuring. 👍

[@TheNepfumbada]

Thanks, that was very helpful, simple and straightforward

[@chucktrotter9699]

2.9.22 Nice demonstration Matt. MY request: Please do a setup and load test on the MIN 6000TL-x grid tie inverter.

[@danmiller5297]

Thank you Matt

[@markcarter8731]

Thanks for the info..

[@SignatureSolar]

No problem!

[@Sparkeee1978]

nice simple, short and sweet

[@tm510a]

Thanks for the demo Matt.

[@TheFatman819]

The problem with these comments knocking thos videp is that they probably do not own any of this equipment, otherwise you wod.be able to flow him along perfectly. EXCELLENT JOB....

[@TRICHOMETRIST]

thanks for video! battery comes with very little tech info no info on dip switches very easy to knock a switch up within a few minutes I found the culprit!! thanks again!!

[@davefroman4700]

Sure hope the government programs spur some LiFePo4 battery production in the US. We need companies like yours developing the skills to manufacture these units in house.

[@jar349]

I wish this demo included hooking things up to the bus bars, including grounding. I want to know how to hook a battery charger up to this when these batteries go into a rack and connect via bus bar but 120VAC chargers come with alligator clips.

[@koldsimer]

Um, hook the alligator clips to the bus bar. The charge will be distributed fairly equally to all batteries

[@RobertoRamirez-zs7bo]

Matt: Need video of BMS pin configuration (RS485) for use on other brands of inverters to feed contact closing signal to stop charging or stop inverting

[@gasparin1914]

Thank you !!!!!

[@SignatureSolar]

You're welcome!

[@gasparin1914]

@@SignatureSolar Thank you, Your explanation has helped me a lot. Pura Vida desde Costa Rica amigo.

[@mellyons4052]

Good info. You make it look easy 😎 Can you show us how you could connect multi plus 2 ( Victron) to your batteries?

[@janmulder398]

From my experience, hook the MPPT, Multiplus and the top UTP of the EG4 battery to your Cerbo. Hook up you Multiplus with your laptop using your MK3-USB adapter, adjust the bank size, float current, bulk current, charge/discharge current and make sure it's set on Lithium. Afterwards, open up your Victron connect app and connect to the Multiplus, set the parameters using installer code ZZZ and adjust the amount of batteries in serial and parallel. Save settings. Make sure your batteries are connected in the settings you just put in, do not, i repeat, do not hook them up to your Multiplus yet. Start the bank bij powering on each battery, let them level for a while, power everything off again and hook up your inverter. Start the system, and enjoy! Ps. Make sure everything is up to date, check for updates on your VRM portal.

[@eco_guardian]

Can you plug this battery setup into an outback inverter also? Do you plug the comm cable into the port in it too?

[@fate711]

This is confusing because the manual shows "On on on off" for address 1 is "reserved for inverter com" on page 4.

[@AustinsChannel888]

Are those green cable same as ethernet cable uses for internet connection?

[@erinne46]

Should the first dip switch be ALL DOWN? … or DOWN, DOWN, DOWN, UP? You have another video that says the latter, so I’m confused.

[@ShaleAudio]

Why do you have the + and - power cables going from the top of the busbar instead of one on top and one on bottom?

[@johndiezel5781]

Question: If these batteries are connected to an inverter that can't communicate with the EG4 batteries, do the communication cables between the batteries still need to be connected, and what settings do the dip switches need to be at?

[@AdamMcCook]

I have the same question. My inverter only has USB & RS485/CAN communication port

[@MichaelHigginsJR]

My 3kw growatt turns off pv when I run those settings once the battery is near 100% just draining the battery not powering any loads. I've seen other videos mention it with no solution.

[@rcud1]

Do you have your Setting #1 as SbU or SOL? I am set at SbU and solar will power most the load as it charges battery as well. I had it at SOL but that didn't seem to work quite as expected.

[@MichaelHigginsJR]

@@rcud1 I will test this asap. Thank you for the reply!

[@MichaelHigginsJR]

Didn't work for me, solar still disabled once batteries hit 100% this is a simple setup, 2 48v eg4 and 1 growatt 3000 lv all from @signaturesolar laset month. trying to use LI setting to monitor remotely with accuracy.

[@jefflane8508]

Use just a standard Ethernet cable between inverter and master battery?

[@rcud1]

I thought this video was acceptable and quite useful.

[@chrislewis9345]

So it will show the soc of the whole pack not individual batteries? Correct?

[@pioneerpete8170]

How do I know if my lifepo4 battery’s are compatible with the inverter? I have the huawei esm48100 batteries, do you know if they are compatible?

[@r.b.l.5841]

Very Cool, Now, is there an app for my IPhone so I can see BMS settings, and individual cell voltages?

[@SignatureSolar]

Not currently. Only for Windows.

[@barsoom43]

Does the cable that connects the master battery to the inverter have a special proprietary pin configuration or will just any Cat5 cable work?

[@AustinsChannel888]

Seems like they dont read/reply messages.

[@JoeHawk77]

Do you guys have a complete AC coupled system to add to existing GT systems (split 120v/240v)? The new system must be able to: While Grid is on: 1. Continue to buy and sell power from grid as needed/available as is happening currently. 2. Charge battery during off peak rate hours (8am-4pm) and discharge battery during peak rate hours (4-9). 3. Stop discharging at a set min battery soc to allow for nighttime blackout. While Grid is out: 1. System must be able to separate itself from the grid. 2. Turn on existing GT Inverter to generate power. 3. Charge batteries with existing grid tied panels/inverter power, supply critical loads. 4. Throttle or turn off Grid tied inverter when batteries reach full soc.

[@SignatureSolar]

We partnered with Schneider and I believe this is possible with that system.

[@johnmiggins9431]

is this the same dip switch configuration for the EG4 with the screen display?

[@SignatureSolar]

No, there is another video with those settings.

[@omni1omni244]

How many batteries are needed to run central a/c for 8hrs? Or washing and drying machines?

[@a.wgilbert5001]

2nd

[@alexbusinesman9429]

you have to do a video with new eg4-LL BATTERIES.

[@onmyworkbench7000]

Yesterday I posted a video on how to get 2 or more of the EG4-LL batteries to communicate all at the sane time with the BMS TOOLS software you can see my video at: kzbin.info/www/bejne/g6KXioGGhN-Ir6M it's 7:41 long but if you don't want to watch all of it you can jump to the 3:05 pont in the video.

[@almostoffgridgarage3485]

Hey Matt, can you please do a video on the early GyLL batteries and the 5000 ES. Thanks.

[@twelveofthem]

These kinda look like the early ones (No LED screen) and I have 3 of them along with this inverter and have been told multiple times by signature to use the User Defined 2 battery setting, not the Lithium setting so this is kinda confusing.

[@robbyrock-drummer]

What benefits from the Growatt Inverter Communications with BMS/ LifePower4 Batteries?

[@waynert69]

What is the main advantage of this vs user configuring battery voltage settings?

[@corba197]

Wayne, to clarify: a "plateau'd" charge curve is a flat one, that stays at a voltage longer than others. This means if you manually configure the inverter to charge to a specific voltage, that voltage might be achieved early on in the charging cycle. This could lead to charging ending before the full amount of time required to get the batteries up to the desired %.

[@fhookfin]

Hello are the cables used standard ethernet cables that i can purchase at offfice Max?

[@DegenerateToo]

Question: If I didn’t receive the short green RJ45 cable, can I use a regular RJ45 cable in type B configuration? (Org/white, org, grn/white, blu, blu/white, grn, brn/white, brn)

[@jeffmotes2129]

When I set to LI my inverters limit battery charging to 10A regardless of charging source or available solar power. Any idea why?

[@festerallday]

Some BMS have a limiter to prevent back feeding if it thinks there is a bad cell in the system

[@jeffmotes2129]

@@festerallday Thanks for the reply. I think the problem was the Growatt SPF5000 would not communicate properly with the BMS setting signature solar was recommending. Went to USE2 mode and programmed parameters and it worked fine. Though I’ve since ditched the Growatts all together.

[@festerallday]

@@jeffmotes2129 may I ask what you use now? I just got in an mppsolar to run a diy system. But I'm thinking of doing the eg4 batteries and racks. As my house primary and moving the diy to my workshop.

[@jeffmotes2129]

@@festerallday I was using 5 Growatt SPF5000. Switched to 2 Sol-Ark 15k. Check my channel out. I have several videos there of what I’ve been doing. More on the way.

[@ChrisDIYerOklahoma]

Curious if these batteries will communicate with Outback Power Mate3.

[@JoeHawk77]

Hi Matt, for our first battery install we purchased 3 of your lifepower batteries and rack along with the Schneider XWPro inverter and insight home communications. Do we need to purchase the Schneider battery monitor to be able to configure rate arbitrage based on soc?

[@duggieg1533]

What if I have a Fysolar inverter that’s not communicating with my lithium battery. What settings should I use. The fault code is 21

[@SignatureSolar]

This will not likely communicate with these batteries, but if you would like to call into our tech support line at 903-441-2090, our team can have a thorough look at the specs with you to find out!

[@oldguy1528]

I have 1 LifePower4 24V battery and a Growatt SPF 3000TL LVM. My problem is the BMS shut down the battery during a snow storm for low voltage and now I cant get the battery to recharge. I NEED HELP !!!

[@ellenfrank2701]

Hi Matt thanks for the video .. Matt my battery I’d say it’s not communicating my solar panels are working when I put my generator on of cause now in the winter there’s no sun but it usually chargers up the battery do you know what I could try I’m so desperate Thanku Matt

[@jettyboy333]

What if you have 2 Growatts hook in parallel? Where would you plug the other cable?

[@ko2890]

Could you do this video for a split phase system

[@SignatureSolar]

The setup for BMS communications is the exact same in split-phase operation!

[@rgperez56]

Matt can you make a video on how to update firmware on a growatt 6000 inverter. I know James did one but I got lost trying to follow. Thanks

[@jh-lp7cg]

Hello, do you know what the rating is on the bus bars on the cabinet? I bought one a few days ago and I need to know to size my fuses.

[@carlossantini]

closed loop communication with Victron & Sol-Ark???

[@lilyeffey]

Can a pointer on how to install t-fuse on the battery rack bus bar. If I parallel these batteries I heard a fuse should be used

[@diyrenewableenergyelectron4996]

Will the lifepower4 batteries communicate with a Schneider XW Pro?

[@grumpyshorts1056]

Is this now going to work with Victron Multiplus II in the same process?

[@dirtdiver2389]

When will you support BMS communications with Sol-Ark? Sol-Ark says they are waiting on you guys to send them a battery to test and certify with. What is the hold up?

[@SignatureSolar]

Working on it. There are a lot of legalities that go into this. If it was as simple as sending them a battery it would have been done years ago :D

[@dirtdiver2389]

@@SignatureSolar Thanks for the reply. What is the current timeline on when you think you might have the legalities passed?

[@inamaman9891]

hi what to do if one or two batteriesx are not communicating i have checked on remote monitoring system what could be the issue

[@SignatureSolar]

It could be among a few issues. If you'd like to reach out to us at 903-441-2090, we can get you connected with tech support to get this taken care of!

[@raeesstemmet9656]

Thanks for the vid. Can one communicate with a DIY battery using a JK or Daly BMS and Growatt 5kw inverter? I'm thinking of building my own battery and I have the same Growatt Inverter

[@dobrzpe]

good info. *to the cameraman*: this is NOT ticktock. LANDSCAPE, LANDSCAPE, LANDSCAPE. and keep your hand off of the microphone so we can hear. that is all.

[@jeffcalder2349]

I have the SMA Sunny Island 6048. Is there a software update that would help me with the communication with that devise? Your batteries are not on SMA's approved list. Are you working on this with SMA? Any help you could provide would be nice.

[@khalilsalam1500]

why L01 ? whats mean this protocol thank you

[@MotoMerica]

With six batteries as shown what Guage wire are you using to run from bus bars to inverter?

[@ericklein5097]

Depends on the size of your inverter. A 3000 watt inverter won’t pull 100A from a 48V (40V to 58.8V) so you could get away with 2 or 4AWG battery/welding cable but if you’re using 4/0 on your system might as well buy a couple extra feet in case you every upgrade to a 6500 watt Inverter

[@diyguy2383]

Does bms work with any inverter/battery or is it different from brand to brand?

[@billw3571]

Hey Matt thanks for the video but it would be even better if you would get in touch with me. I've been moved up to "level 3 tech support with Matt" almost two weeks ago. Would love to see if you can answer some my issues with your equipment.

[@secondadventmessengerminis3594]

Hi. I have ten EGLL batteries. 9 are EGLL v1 and one is EGLL v2. The v2 is operating as my master. I have three Growatt ES5000’s. I am having trouble getting all three ES5000’s to what together. Question: Do I need a CAN box to run the master battery in and then three Ethernet cables to run one each into the separate ES5000’s? Right now, my batteries are not charging sometimes in the day time, while PV power is only going to my loads. I really would appreciate some guidance on this. Scared to go out of town because not sure if batteries will have enough power to support my loads in the night time while I am gone. Thanks

[@SignatureSolar]

You will need to update the firmware of the v1 batteries to communicate with the v2 batteries via the multipack firmware (drive.google.com/file/d/1KxW-_6Tb_oySMM2Pgo9lUhbz88yB1KbK/view?usp=sharing ). You will not need a can hub to communicate between the 3 5000's to the batteries. You will just want to set up the growatts in parallel, set the battery setting (setting 5) to LI then it will bring you to a sub menu and you will change that to L01. You will want to do this for each inverter. You will have just one straight through cat 5 or cat 6 cable going from the inverters bms port to the master battery's rs485 port (the v2 battery). The paralleling cables from each growatt will carry the batteries communication. If you run into any issues along the way let us know, our tech team is happy to assist!

[@secondadventmessengerminis3594]

This is not working for me.@@SignatureSolar

[@secondadventmessengerminis3594]

I was on the tech phone line for 45 minutes. Frustrating... This is exactly the reason why I did not want the V2 batteries. The salesperson assured me that it would be seamless. Yeah Right!!!

[@SignatureSolar]

​@@secondadventmessengerminis3594I just reached out to the Tech Support supervisor and he said hold times are a little high today, but you can email [e-mail] and they will be able to assist you today.

[@pederw]

Does these batteries communicate with Growatt sph10000tl3 bh as well?

[@johnSawicki-bo1rs]

Hi Matt. I have 6kW 48V 240VAC Split Phase 80A 250VDC Off-Grid Inverter by Growatt and 48V 100AH LCD Battery by EG4 that I purchased form you some time ago. I finally had a chance to install this setup and noticed that my inverter and battery came without any cables. I was trying to contact your support line and sales to get those cables but I was not able to actually talk to anyone. I was trying to lookup a pinout for RS485 and found few, but not a single configuration was able to establish communication between my battery and inverter. I also need a cable to be able to connect to the battery directly so I can upgrade firmware and be able to manage battery from my laptop. Is there a chance that you can post BMS battery to Growatt inverter cable pinout on both ends? I'm fully capable of making my own RJ45 cable as long as I know which one I need. Thanks a lot. John

[@anthonysuccar5053]

I have a diferent lithium batery trying to conect to my growatt and it’s not working

[@anthonysuccar5053]

Looking at the catalog I have diferent pins from the battery port rs 485 to the bms of the inverter, should I do my own patch cord ????

[@larrymic2526]

I live in Australia. Do you have any suppliers here that I can purchase from?

[@runneryg]

I have a 3200hw Pow Mr inverter 24 volt lithium ion gel AGM AND USER. and a 24 volt lifepo4 battery how do i communicate this with the inverter as i do not have a bms on the battery or the inverter can anybody help me i been trying for days and i come to this that its the bms problem thats why the solar IS not charging on the inverter. CAN SOMEONE HELP ME.

[@MrDonb52]

Can I monitor the batteries on a laptop etc

[@JamesLee-ey2yv]

The book and everyone else is saying the 1st battery dip switch must be down, down, down, up. What has changed and why am I hearing different here at 1:11.

[@SignatureSolar]

I do see in the manual there is an error and will be fixing that. Matt's configuration, for the LifePower4 battery, is correct. The switches should all be in the down position for this model.

[@tap836]

@@SignatureSolar And yet the manual hosted on the batteries purchase page still appears wrong. Having OFF be up and ON be down in the manual is backwards from logic and what the battery label shows. And the manual pin positions (side to side) are opposite from what the battery actually does. The battery requires you to read the binary from left to right instead of the standard right to left which was used by the manual. Having all your documentation not match the physical product is troubling and no wonder it leads to so many problems and confusion from users.

[@donaldbishop923]

@@tap836 You are absolutely correct. I'm stuck with error 4 and 20, and it is probably due to the documentation. I've tried other dip switch configurations, but nothing seems to work. A simple addendum, placed in the box would do wonders for the end users.

[@tap836]

@@donaldbishop923 One thing to do to wrap your head around the dip switch numbering, is to grab the BMS test software from the battery product page. Connect a computer to one isolated battery using their provided cable, then use the software to scan the whole id range. One ID should appear as in use and that corresponds to your dip switch setting. For my Lifepower 4 48v batteries, down is off, and the 4 switches are using binary read left to right. So ▲▼▼▼ (Up Down Down Down) is 1 ▼▲▼▼ is 2 ▲▲▼▼ is 3 etc. If you understand how binary works, that should make sense.

[@offgridsolarpr2336]

Hi I need to be able to connect my ARK-2.5L -A1 battery stack to my Growatt SPF-6000 DVM inverter can you provide the settings or video ?

[@SignatureSolar]

Hi! You will set setting 5 to 'USE 2' - In the absence of additional information, you'll need to determine the parameters for settings 19, 20, and 21 based on the equipment you have. I hope this helps!

[@offgridsolarpr2336]

I set it to USE 2 But the inverter fails to recognise the battery. This is a Growatt battery so I am assuming it can comunicate via BMS with the inverter @@SignatureSolar

[@SignatureSolar]

If you'd like to call in to our Tech department at 903-441-2090 with your name and order number, we can get someone to have a look into that with you! @@offgridsolarpr2336

[@user-hg2tk3xj9y]

Tried to balance 2 new batteries and charged with 58.4v one time, now both batteries are locked up kinda on that red fault, flipping the breaker on it or hitting reset just allows inverter to kick in for a second then falls back to that fault mode.....guessing I have to just wait till they naturally lose enough charge to not trip that fault automatically....do not think I will do that equalize thing at 58.4v ever again....crossing my fingers this is not stuck bricked for a week till it loses enough charge to function again.

[@SignatureSolar]

If you need any assistance, please don't hesitate to reach out to us at 903-441-2090!

[@user-hg2tk3xj9y]

@@SignatureSolar I did purchase from Solar Sovereign, trying to get some help on their side...but if that fails will see if you can assist in some way, I get they are kinda a sub company of yours or something like that.

[@user-hg2tk3xj9y]

@@SignatureSolar Got the issue resolved, took a few days, but am a happy camper....love the batteries.

[@SignatureSolar]

That's great! We're so glad you love the batteries!

[@nicevideomancanada]

It's a good demo, the sound just sucks. I"m used to watching Will Prose channel, but here you are showing how to hook them up in a Server Rack unlike Will Prose has so far. So far I'm going with this unit for my Tiny House Trailer that I'm building this year. additionally you are showing the Grow Watt sideways. You could do such a better demo than this. Start over. just saying.

[@toolate6971]

Can you do the same using your newest (EG4) inverter?

[@SignatureSolar]

It has a different operation that is seamless.

[@chrisrichardson8908]

What are the efficiency of these

[@TK-123]

Matt did a terrific job in showing us the details of connecting up the batteries, but the video was a fail. This has happened on a few other Signature Solar presentations where no concern is given to the camera setup. It is so amateur-ish. The camera is looking sideways on the inverter and is not focused on the display. If Will was running this, that wouldn’t happen. Growing pains I guess. Plus, if you want to use a MPPP or Victron inverter, you are out of luck…

[@erichibar4746]

Good stuff. There is a David Poz video where he says when turning on multiple batteries, the voltage must be within .1 VDC. Does not sound right. Any truth to that?

[@erichibar4746]

@Richard from Signature Solar Thanks, good to know!

[@samueljlallemandjr8612]

@Richard from Signature Solar ​ @Signature Solar Hello Richard, I have a 5 battery setup on a SS rack and the 2nd and 4th (from the bottom) seem to be discharging at a different rate from the others...Those two batteries will have 2 flashing SOC lights vs the other ones showing 3 SOC lights after a night run on two AC units....I had read that the positive and negative cables going to the inverter should be at opposite ends on their respective bus bars; Have mine setup as such; still facing the issue. I did make sure on initial set up that all batteries were on same voltage. Please help

[@5slabs]

@@samueljlallemandjr8612 if still a problem, maybe use 2/0 gauge wire if you are using 2 gauge.

[@samueljlallemandjr8612]

Thanks @@5slabs that is what I am planning to do soon. Charging the batteries individually as we speak with the SS charger to get them back in sync.

[@samueljlallemandjr8612]

@Richard from Signature Solar thanks . Did that and it seems to be that the (provided) cables are the culprits

[@alexbusinesman9429]

pay a publisher for pro presentations.

[@nicevideomancanada]

Your sound quality is poor. just saying.

[@littlebeehoneyfarm9294]

You guys need to get your stories straight. Another recently released video by S.S claimed that your DIP switches needed to be 3 down and one up!

[@corba197]

Whoa... Gentle, Richard! Little Bee Honey Farm is raising a valid point. In SS's video titled "EGYLL BMS Communications with Growatt Inverters (5000ES & others)", SS responded (9 days ago) to Jay Ess's question by saying "On EGYLL the master is 3 down 1 up". It seems to me it's a fair question that doesn't deserve the brush off that you just offered.

[@SignatureSolar]

@@corba197 I'm not yelling, just excited to share. And on the EG4LL battery, the dipswitch configuration is 3 down 1 up. The EG4LL is a different model than the LifePower4. Which is why my reply was "Depends on the battery..." This is Richard from Signature Solar by the way :D

[@littlebeehoneyfarm9294]

Interesting info Richard. Yet which raises an additional question. Why does it matter as far as which battery you have? I was under the understanding per S.S”s own advertising that the EG4 is simply the Gyll battery which was rebranded. It was said they are the same batteries, only rebranded. So is there indeed a difference?? Just trying to understand the need for different comm addresses for what was said to be the same battery. Thanks for your help!!

[@littlebeehoneyfarm9294]

Thank you Richard for the clarification!

[@MrShaneo369]

@Richard from Signature Solar so are you saying that the older Gyll branded batteries will communicate with the Growatt in the same way?

[@orvillekirkland3000]

Hi My 600t show code 20. I check com. cables and they are good but can't get it to clear