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The next thing? Inverter or Battery? All in 1?

Markus_EG4

I am from Germany. Don't mean to come off rude
Joined
Jan 19, 2023
Messages
790
Location
Sulphur Springs, Texas
I want to get anyone’s thoughts on what they think the next thing is. Or what’s missing, what could be better. Please feel free to share your thoughts.
 
Smart panel like SPAN but without the required preferred vendor install. 40 spots instead of 32. Built in EMP/Surge. Talks to EG4 inverters, Ethernet/wifi, app works on local network if internet down.
Take that one step further. Inverter/breaker panel all in one! It can take the breaker panels place and use less space!
 
- A module with a bunch of relays that will open / close at programmable battery voltages
- An inverter with the same functions that solar assistant has, with an app for your self phone or tablet
I like the idea of stronger Monitoring!!!
 
Higher voltages x3.


Modular battery system that can be put in series on site to keep shipping costs down and maneuverability easy.

Make an AIO that is user serviceable with easily replaceable components, make sure the components are available for purchase after x years.

More info on equipment, such as: the MTBF on critical components, testing procedures done, life expectancy under various operating and environmental conditions.

Open source local monitoring solutions.

More beta testing, less firmware updates.
 
Tough question. We have a plethora of NEC and other restrictions to navigate so I fear that some desires may be unrealistic.

Can’t make wall mounts within a certain distance, can’t over stack the rack mounts (if code enforced)
I believe this would also implicate some of the HV PV input desires as well.

I used to strive for a 16kw or larger single inverter but have realized that simply makes wiring potentially unbearable due to amperage demands.

High voltage in general could be big on the horizon and if one were to sort of “pioneer” this segment as a household name vs the Uber pricey stuff that could become far more than a niche?

I think a more modular or serviceable competition to ecoflow and anker could be interesting. Certain design aspects could be implemented to assist the more diy or permit averse crowd as well.
Ie a prepackaged 6kxp with married 10kwh battery (maybe back to back for form factor) on wheels.

A lot of people seem to be fans of “smart” technology. Maybe bring that with panels and load centers, but secure US based server infrastructure FIRST so that when advertising out of the gate, the concerns of data going overseas may be of comfort to some

Shoot even more trivial things like test different mounting orientation of existing equipment. Such as a flat mounted 6kxp vs a vertical orientation.
 
Lots of good ideas so far.

Would like to see some HV equipment.

I like the idea of an AIO with batteries but it seems like it would be too heavy.

The AIO with built in breakers/panel would really simplify installation for a lot of people.

Open source would be really sweet. Would allow people to build in additional integrations or custom monitoring.

I’m all for user serviceable hardware. Saves a lot of time if something goes down.
 
An official solar assistant/home assistant plugin for local monitoring.
That exist on the 18kpv either one of these ports they as in SA or HA just need to configure their software
 

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My specific desire would be cases of 280-315 or whatever cells with welded bus bars so that I could build on that.

I would feel more confident in the welded bus, and more confident that you have the supply chain leverage to actually exert some QA.

Maybe doesn't line up with the actual business though, because that's already half way to just making a packaged battery like those already for sale.
 
What about modular wiring cabinets for the inverters? Different sizes for different needs.

Some people may have limited space and need a smaller wiring compartment on the bottom of the inverter, others hate playing “bloody knuckles” so they want enough room to climb inside, close the door and keep on wiring (you know, like the old Chevy truck engine compartments…).
 
Speaking of modular, what about a modular AIO where you pick the size components you need. Kinda like a “build your own AIO”. You select the size inverter, mppt, etc. If you decide down the road you need a larger component, you just upgrade that individual piece. Kinda goes along with the “user serviceability” that @42OhmsPA mentioned.
 
I realize a lot of these could be pipe dreams, but who knows, maybe it’ll spark some idea.

You’ve got the EG4 bright mount. What about a customizable racking system for a covered trailer which allows you to “unfold/open” more panels for additional production when you park the trailer. Then when you need to move the trailer, you can collapse the panels down.
 
Speaking of modular, what about a modular AIO where you pick the size components you need. Kinda like a “build your own AIO”. You select the size inverter, mppt, etc. If you decide down the road you need a larger component, you just upgrade that individual piece. Kinda goes along with the “user serviceability” that @42OhmsPA mentioned.
Sounds like a midnite b17.
 
Improve the BMS on the eg4 batteries to allow for 2A balancing like the jks can do. So owners don't have to deal with potentially many cycles and holding at full charge for days/weeks which may not be possible in a mobile situation to get them to properly balance.
 
Improve the BMS on the eg4 batteries to allow for 2A balancing like the jks can do. So owners don't have to deal with potentially many cycles and holding at full charge for days/weeks which may not be possible in a mobile situation to get them to properly balance.
Don’t the LLs do this and wall mounts?
 
A standard duplex/multiplex connector and smart bus for solar panels. Daisy chaining panels should plug A-B-C-...-AIO, the electronics in the box could have a protocol to reconfigure the parallel/serial chaining as desired / optimized, and handle any RSD requirements. The box on the panel should be dual socket no wires, connection cables should be separate and purchased/sized to the appropriate length to reach the next device.

You ought to be able to build something for $10-15/panel. ie the panels should be smart, and if one is a problem, I should be able to query all the panels in the chain and find it. Coupla solid state relay devices and a small cheap microcontroller.
 
I would love to see more from EG4 talking about failure modes and how to create a safe installation/what you do for safety in your design. I'm also in the camp that loves the 280Ah solution... but the logistics of moving it DIY are a bit on the challenging side, so I would love to see something showing UL approval for a 6-high or ideally 8-high cabinet as a single unit for code.
 
I described some of the things I would like to see in my Thread on Off grid AIO: https://diysolarforum.com/threads/an-off-grid-aio-i-would-like-to-see.83391/ along with others.

I am not all that conversant with EG4 products other than what I read here on the Forum but I noted some issues with how the software that control the 6000xp functions. In particular the seeming inability to easily select a mode and also the confusing battery communication and time settings. Sometimes advances made by designers are more of a step backwards in usability or, for that matter, complete loss of things that folks want and need.

So at the very least I would suggest before you bring any unit to the market to have some ordinary folks look at and use it. Not just fellow geeks and aficionados.
 
Here’s some of the things I wanted in an inverter and you guys have mentioned a number of them as well.

The idea of having all the switch gear inside the inverter was attractive to keep it simple and neat … and avoid lots of interconnected boxes on the wall ... and the bare minimum of external wiring.

And having a modular design to make any servicing quicker and easier. You can change a module over in this inside 10 minutes and several of them are interchangeable. So this could be user serviceable. Unfortunately I haven’t built a batch of spare modules yet, but the bits are here. 😁

And of course it’s so big there’s no room for charge controllers or mppts … so they all fit in a separate box … or they will when the box is finished. That was something else I wanted because most of us need multiple mppts … so why not put them and the switching into one unit.

These are easily serviceable and can be unscrewed and removed in probably 5 minutes … while the rest remain working.


While it’s not a new idea, another feature I wanted was to be able to use the inverter to provide my own “grid” … then hook up additional grid tie inverters to add to the system … but still remain off grid. These additional GTI's will backfeed through the Warpverter to charge the battery when there is excess power.

It has gone the wrong way voltage wise though and stayed at 48V. If I could have found some Nissan Leaf batteries when I first started I may have aimed for 96 or maybe 120V. I do know a guy who built one of these to run off about 250V from a Toyota Prius … so there’s lots of possibilities.

It’s old school low frequency inverter design, so that gives it massive surge capability. This one can run up to 15kW and theoretically at least double that for surges … not that I’ve had the courage to try that yet.

I’m not planning on manufacturing these mind you, but it's nice to see that others have similar ideas.

The inverter design/circuit is not mine ... this is just my interpretation of a Warpverter. 😁

WarpverterandMPPTs.jpg

I still need to disappear the wiring for the Growatt. :)

GTI Added.jpg
 
Here’s some of the things I wanted in an inverter and you guys have mentioned a number of them as well.

The idea of having all the switch gear inside the inverter was attractive to keep it simple and neat … and avoid lots of interconnected boxes on the wall ... and the bare minimum of external wiring.

And having a modular design to make any servicing quicker and easier. You can change a module over in this inside 10 minutes and several of them are interchangeable. So this could be user serviceable. Unfortunately I haven’t built a batch of spare modules yet, but the bits are here. 😁

And of course it’s so big there’s no room for charge controllers or mppts … so they all fit in a separate box … or they will when the box is finished. That was something else I wanted because most of us need multiple mppts … so why not put them and the switching into one unit.

These are easily serviceable and can be unscrewed and removed in probably 5 minutes … while the rest remain working.


While it’s not a new idea, another feature I wanted was to be able to use the inverter to provide my own “grid” … then hook up additional grid tie inverters to add to the system … but still remain off grid. These additional GTI's will backfeed through the Warpverter to charge the battery when there is excess power.

It has gone the wrong way voltage wise though and stayed at 48V. If I could have found some Nissan Leaf batteries when I first started I may have aimed for 96 or maybe 120V. I do know a guy who built one of these to run off about 250V from a Toyota Prius … so there’s lots of possibilities.

It’s old school low frequency inverter design, so that gives it massive surge capability. This one can run up to 15kW and theoretically at least double that for surges … not that I’ve had the courage to try that yet.

I’m not planning on manufacturing these mind you, but it's nice to see that others have similar ideas.

The inverter design/circuit is not mine ... this is just my interpretation of a Warpverter. 😁

View attachment 214406

I still need to disappear the wiring for the Growatt. :)

View attachment 214407
Who built this I’m amazed
 
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