EG4 Community Forum - Recent Posts

RE: Why is AC charging occurring?

gtsquires — Wed, 29 Jul 2026 20:41:18 +0000

@eg4eric Obviously the battery voltage varies over the course of a day. Attached is the graph showing the battery voltage for that day.

The cut-off setting for both on-grid and off-grid was set at 48V. With AC charge NOT enabled, I expect the battery to discharge to 48V and then the load is powered by the grid until the next day when the PV power carries the load and charges the battery.

I noticed that you DISABLED the "PV Charge Priority". Why? According to the documentation, this should be ENABLED to "ensure excess PV power (after meeting load demands) is directed to charging the battery before any other action". Seems to me that this setting should be ENABLED.

Just a little history: I knew I would lose power for most of 7/22/26 so I had enabled AC charge on 7/21 so I could ensure that my batteries were fully charged. Once the batteries were charged, I disabled AC charge on the evening of 7/21/26. The system worked as expected until the evening of 7/23/26 when it started doing this inefficient AC CHARGE/DISCHARGE cycling of the batteries.

2779

Batteries not communicating

rtb1073 — Wed, 29 Jul 2026 14:37:40 +0000

04/20/26 our system was running fine, we are told by SignaTech that an employee of EG4 changed our battery settings from lithium to lead acid or vis versa, when they did this 2 of our batteries failed. SignaTech contacted EG4 and they replaced the batteries.

Since this has happened our batteries are not communicating with each other, and we are told that the inverter may need to be replaced.

I have been in contact with Lelia Cavillo, but last communication was about 3 weeks ago. I have since sent 2 other emails with no response. Our last email was she was getting with upper management and going to contact SignaTech. I have not heard from anyone. I have also cc’d James Showalter and he has not acknowledged my emails either.

I would greatly appreciate getting this resolved. Also we are being billed from SignaTech for something that we should not be responsible for.

RE: EG4 6000XP Operating Temperature Range

Marobel — Wed, 29 Jul 2026 14:21:34 +0000

Do you think I could get a reply to this soon? Seems like a straightforward answer should be easily available.

RE: after an eps overload one side of my 12000xp pv not working

Todhend — Mon, 27 Jul 2026 19:30:50 +0000

found out its a loose wire or bum MC4, all is fine

after an eps overload one side of my 12000xp pv not working

Todhend — Mon, 27 Jul 2026 18:40:18 +0000

after an eps overload one side of my 12000xp pv not showing voltage

taking the wires loose, the voltage is 400v, after plugging in the voltage drops to below 100v

even the breaker below the unit voltage drops when pugged into the inverter

the other side works fine please help

RE: Help! - Had solar panels, EG4 Inverter and Batteries installed in 7/2026- Has never been right.

Dutch-34 — Mon, 27 Jul 2026 18:12:41 +0000

Thanks for your replies. After much effort and many hours of calls and adjustments by both my installer and EG4 support, it appears as though my problem has been solved. Not honestly sure what they did, because it was many different things over an extended period of time. Will have to monitor and see how it does moving forward. Thanks so much for all of the input.

RE: Basic min & max voltage logic

EG4 Eric — Mon, 27 Jul 2026 16:24:31 +0000

@jamcandles

If you have our EG4 Indoor WallMount batteries, we recommend operating the batteries with an 80% DoD. This helps minimize SOC drift, maintain optimal battery performance, and maximize the overall lifespan of the batteries.

I’m also sharing a document that provides additional information on battery health and the recommended 80% DoD.

Battery-Health-and-DoD-Document.pdf

RE: How to force 12kBTU solar mini splits to work at full capacity in cooling mode?

Krzysiek_KTA — Mon, 27 Jul 2026 16:00:05 +0000

Got it.

THX

RE: How to force 12kBTU solar mini splits to work at full capacity in cooling mode?

EG4 Eric — Mon, 27 Jul 2026 15:59:22 +0000

@krzysiek_kta
You should be able to select it through this option
2772

RE: Odd 12000xp behavior when coming off grid-charge to Solar/Battery mode.

EG4 Eric — Mon, 27 Jul 2026 15:35:30 +0000

You should not be experiencing any of these issues, especially after updating the battery firmware.

I recommend contacting our Technical Support Team at (903) 609-1988 so we can properly troubleshoot the system and get this resolved for you. If you have already contacted our support team, please provide your ticket number, and I can look into the case as well.

Based on what you’ve described, it does appear that there may be a communication issue between the batteries and inverter.