EG4 new products at RE+

[spiker611]

As excited as I am for the gridboss and flexboss, the manuals are not finished. Their documentation team needs some better QA.

They use QR codes to link to "inverter documentation linked below for detailed instructions on installation and configuration guidance".

Well if you decode the flexboss21 QR code it goes to an internal MS teams link: https://teams.microsoft.com/l/messa.../1726000278881?context={"contextType":"chat"}

 

[ricardocello]

Well if you decode the flexboss21 QR code it goes to an internal MS teams link: https://teams.microsoft.com/l/messa.../1726000278881?context={"contextType":"chat"}

Perhaps "Operators are Standing By"....

 

[dougbert]

As excited as I am for the gridboss and flexboss, the manuals are not finished. Their documentation team needs some better QA.

They use QR codes to link to "inverter documentation linked below for detailed instructions on installation and configuration guidance".

Well if you decode the flexboss21 QR code it goes to an internal MS teams link: https://teams.microsoft.com/l/message/19:8b9c6ed8-d3af-472f-b310-103c03651fe7_9c3d0134-2582-4fb9-b049-651f3fb5ba2f@unq.gbl.spaces/1726000278881?context={"contextType":"chat"}

good feedback for them

I will take such a manual on a new release instead of waiting for months more. We readers can do a good job of proofing IFF we send them back any feedback

we at least have the manuals

thanks @SignatureSolarJess , pass the words along

 

[Offgrid Jungle]

I am just noticing that the 12000XP manual recommends a minimum battery of 400AH. That conflicts with the package offerings by the dealers. They offer the 12000XP, pull box, and EG4 280AH battery all stacked together in a clean package. The 18kpv has been offered with one EG4 for quite awhile. Is it OK to use 280AH with the 12000XP?

 

[wpns]

You can only get about 10KW DC out of the Wallmount batteries, so to get full power from those inverters you need more than one battery. Besides, if you’ve properly sized your system, one battery isn’t going to last very long.

 

[Brucey]

I am just noticing that the 12000XP manual recommends a minimum battery of 400AH. That conflicts with the package offerings by the dealers. They offer the 12000XP, pull box, and EG4 280AH battery all stacked together in a clean package. The 18kpv has been offered with one EG4 for quite awhile. Is it OK to use 280AH with the 12000XP?

The 18kpv manual also specifies two 280ah minimum. It's due to the battery BMS limits.

 

[green-river]

There will always be a bottleneck on power: inverter or battery. You’ll rarely see a perfectly matched pairing of battery output power and inverter output power—one will almost always be higher or lower than the other. You don't want your batteries to be the bottleneck. Because, nighttime.

For example, with the EG4 12000XP and EG4 WallMount Indoor battery:

• In the middle of the night when your inverter is running on battery power only, the 12000XP might be capable of producing 12kW of power, but it’ll be limited to 10kW since that’s the maximum output of the battery
• During the day, if you’ve got solar PV coming in, the inverter can combine a few kW of PV power with the 10kW from the battery to reach the full 12kW AC output potential

Would it work to have just one of each? Yes, it'll work fine. But your 12000XP will be a 10kW inverter at night and a 12kW inverter during the day.

 

[green-river]

Given that:
1. EG4 12000XP has 12kW of max continuous AC power output
2. EG4 WallMount Indoor battery has 10kW of max continuous output (200A @ 51.2V)
3. EG4 recommends only discharging at 8kW from the WallMount Indoor battery (160A @ 51.2V)

So, going with the 8kW recommendation instead of the 10kW max on the battery, you would end up with these combinations when you parallel inverters and parallel batteries together:

You	# Inverters	# Batteries	Inverter Power​	is​	Battery Power​
	1 inverter	1 battery	12kW​	>​	8kW
	1 inverter	2 batteries	12kW​	<​	16kW
	1 inverter	3 batteries	12kW​	<​	24kW
	2 inverters	3 batteries	24kW​	=​	24kW
	2 inverters	4 batteries	24kW​	<​	32kW

 

[Brucey]

If going with one 280ah prob better off getting three of the 100Ah ones to get 300A of battery BMS.

 

[zanydroid]

If going with one 280ah prob better off getting three of the 100Ah ones to get 300A of battery BMS.

Yeah, now that they are the same $/kWh

Though there are details like, how much does the racking cost / take up space, do you need weather proofing. Do these server racks have heaters?

The indoor wall battery is still cheaper and has all mounting hardware

 

[Brucey]

Yeah, now that they are the same $/kWh

Though there are details like, how much does the racking cost / take up space, do you need weather proofing. Do these server racks have heaters?

The indoor wall battery is still cheaper and has all mounting hardware

The eg4 rack mounts don't have heaters. But three 100Ah also gives you some redundancy in case one has to go back to eg4 for replacement, and easy to move around. Small premium is worth it imo. The Trophies have heaters.

 

[wpns]

But your 12000XP will be a 10kW inverter at night

For just under an hour and a half.

 

[Offgrid Jungle]

I only use 500 - 600 watts at night...

 

[wpns]

I only use 500 - 600 watts at night...

So again I contend that your inverter (and it’s operating power) is oversized. I mean maybe 20:1 day:night power consumption is a thing…

 

[Offgrid Jungle]

So again I contend that your inverter (and it’s operating power) is oversized. I mean maybe 20:1 day:night power consumption is a thin

It's not always about steady loads. The inverter needs to handle the peak loads too. My neighbor has an instant hot electric water heater that spikes enough to send his inverter offline. Homes here have mini split AC units in each room. Most homes have a microwave that spikes one leg for 2 minutes. Again, it's the peak loads that have to be considered too!

Those of you that take the monthly bill and divide it by 30 days and then by 24 hours per day are not sizing an inverter correctly, I contend.

I think I need to take another look at the GRID blend feature...

 

[zanydroid]

Those of you that take the monthly bill and divide it by 30 days and then by 24 hours per day are not sizing an inverter correctly, I contend.

Well there’s also the problem that you could have a thread with both hybrid and AIO users. And they don’t clearly announce on every message what their assumptions are. And the forum addicts are on enough threads that they can’t keep track of which ones are for off grid and which are for hybrid

The former can (with interconnect agreement) use the grid to handle surges, so it’s entirely reasonable to use steady state.

The latter, not so much

The system sizing for one could easily be wrong for the other. Too expensive for hybrid, to use off grid sizing. Can’t power your loads for off grid, if you use hybrid sizing

 

[DIYrich]

Well there’s also the problem that you could have a thread with both hybrid and AIO users. And they don’t clearly announce on every message what their assumptions are. And the forum addicts are on enough threads that they can’t keep track of which ones are for off grid and which are for hybrid

The former can (with interconnect agreement) use the grid to handle surges, so it’s entirely reasonable to use steady state.

The latter, not so much

The system sizing for one could easily be wrong for the other. Too expensive for hybrid, to use off grid sizing. Can’t power your loads for off grid, if you use hybrid sizing

On grid without backup is sizing to invert pv (enphase).

With backup, you can size for load shedding (don't run big loads when grid is down), and live with a smaller inverter for those times.

If you size for full backup, then no different from off grid.