Two Growatt 3000TL LVM-ES, one 5000ES-US or one MPP LV6548?

MT off grid

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I have been looking at either two growatt 3000 one growatt 5000 or the mpp lv6548, I think I have settled on the growatt but im not positive, I like the option of two 3000 growatts because of the one is none two is one way of thinking plus I get 6000 watts and split phase and only needs 120 volts to get pass through and I would also get two PV inputs, the 5000 growatt has a bit easier of install but it needs the transformer to get 120 volts and I'm not sure how well that works and can't find any information about it needing 120 or 240V for pass through but I only getone PV input. The MPP lv6548 is also a very nice inverter but im still confused in if it has bonded neutral or not but again it needs 240V to be able to use the pass through option and I like the two PV inputs on it. I'm almost positive no one here has used all three of these but im looking for real life experiences with these.
 

sunshine_eggo

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Consider that all listed options will burn about 100W continuously. That's 2.4kWh of battery capacity drained with no loads present.
 

sunshine_eggo

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You can setup the LV6548 on low mode.

Only if you have a situation where you have truly 0W demand, i.e., no clocks, refrigerators, etc. If you need even 1W of power continuously, you can't use low power mode.
 

sunshine_eggo

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Do you have other suggestions

Tier-1 hardware typically has notably lower idle draw and improved surge capability.

My 5kW Quattro burns 27W. Magnums, Outbacks, Schneider, etc., all have more modest idle consumption. You basically pay more for the inverter/MPPT with Tier 1, or you buy more battery for the low-end stuff.
 

MT off grid

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Tier-1 hardware typically has notably lower idle draw and improved surge capability.

My 5kW Quattro burns 27W. Magnums, Outbacks, Schneider, etc., all have more modest idle consumption. You basically pay more for the inverter/MPPT with Tier 1, or you buy more battery for the low-end stuff.
I have looked at the victron since I already own several pieces of victron but I am trying to build a good size system (6-2 combiner box, 200 amp breaker, wire etc.) Plus the inverter(2) for $2000ish, the victron puts me above that amount alone
 

Tooth Fairy

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I think I have settled on the growatt but im not positive,
After all the trouble I went through with Growatt you would do yourself a favour by staying well clear of them.
Try Deye inverters instead as they are far superior in every way.

 

MT off grid

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After all the trouble I went through with Growatt you would do yourself a favour by staying well clear of them.
Try Deye inverters instead as they are far superior in every way.

What problems did you have?
 

Tooth Fairy

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Hi.
I had difficulty setting the thing up properly from the panel as I couldn't connect via the dongle as the dongle that came as the package didn't connect.
After many emails to their so called customer service they sent a new dongle that did connect, this took 18 months of wrangling with them.
The original dongle apparently wasn't compatible with modern home routers??????

With that sorted I thought it was clear sailing but no, the inverter had different ideas.
Out of the blue the inverter started discharging all the battery power to the grid, this was not set up to discharge the batteries to the grid, it would discharge until the batteries had 0 volts.
This happened on any day, most days the panels were producing 6Kw per hour but the batteries still went dead, once dead the inverter couldn't actually see the batteries so they wouldn't start recharging them.
I later found out that this fault is common as others on other forums I've talked to have had the same issue.

I even bought a mains to 48v battery charger to get the batteries back to where they would charge from the inverter, which as you can imagine sort of defeats the whole exercise.

Growatt customer service than told me that the mains smart meter was at fault and I need to change it.
My son works as an electrical engineer for a major power supply company and told me that if the smart meter was at fault the power company would have had it swapped out even before I knew it was faulty, I still have the original smart meter in use.

Sick and tired of the run around with Growatt I went and bought a Deye 5Kw hybrid inverter and couldn't be more happy.

The Deye is far easier to set up, the dongle connected first time too, it charges and discharges more amps AC and DC if you set it up properly, TOU is easier to set up, the batteries have never gone past the discharge floor that I have set.

I will admit that for ease of use after installing the Deye I went and bought a monitoring system from https://solar-assistant.io/
This monitoring system makes adjusting the inverter a breeze from anywhere that you have an internet connection.

The Growatt is still hanging on my wall waiting for me to take it off and throw it in the rubbish, the Growatt is just junk in comparison to the Deye.
 

MT off grid

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Hi.
I had difficulty setting the thing up properly from the panel as I couldn't connect via the dongle as the dongle that came as the package didn't connect.
After many emails to their so called customer service they sent a new dongle that did connect, this took 18 months of wrangling with them.
The original dongle apparently wasn't compatible with modern home routers??????

With that sorted I thought it was clear sailing but no, the inverter had different ideas.
Out of the blue the inverter started discharging all the battery power to the grid, this was not set up to discharge the batteries to the grid, it would discharge until the batteries had 0 volts.
This happened on any day, most days the panels were producing 6Kw per hour but the batteries still went dead, once dead the inverter couldn't actually see the batteries so they wouldn't start recharging them.
I later found out that this fault is common as others on other forums I've talked to have had the same issue.

I even bought a mains to 48v battery charger to get the batteries back to where they would charge from the inverter, which as you can imagine sort of defeats the whole exercise.

Growatt customer service than told me that the mains smart meter was at fault and I need to change it.
My son works as an electrical engineer for a major power supply company and told me that if the smart meter was at fault the power company would have had it swapped out even before I knew it was faulty, I still have the original smart meter in use.

Sick and tired of the run around with Growatt I went and bought a Deye 5Kw hybrid inverter and couldn't be more happy.

The Deye is far easier to set up, the dongle connected first time too, it charges and discharges more amps AC and DC if you set it up properly, TOU is easier to set up, the batteries have never gone past the discharge floor that I have set.

I will admit that for ease of use after installing the Deye I went and bought a monitoring system from https://solar-assistant.io/
This monitoring system makes adjusting the inverter a breeze from anywhere that you have an internet connection.

The Growatt is still hanging on my wall waiting for me to take it off and throw it in the rubbish, the Growatt is just junk in comparison to the Deye.
Which model of growatt? Deye isn't available in the U.S from what I can tell but sol-ark is but it's way out of my budget
 

Tooth Fairy

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Which model of growatt? Deye isn't available in the U.S from what I can tell but sol-ark is but it's way out of my budget
Growatt SPH6000

Deye is the same as SunSynk, if that's available, more bucks up front, but the head aches with Growatt..........grrrrrrrrr
 

MT off grid

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Growatt SPH6000

Deye is the same as SunSynk, if that's available, more bucks up front, but the head

Growatt SPH6000

Deye is the same as SunSynk, if that's available, more bucks up front, but the head aches with Growatt..........grrrrrrrrr
Deye, SunSynk, sol-ark,
Growatt SPH6000

Deye is the same as SunSynk, if that's available, more bucks up front, but the head aches with Growatt..........grrrrrrrrr
Out of my price range, gotta be either growatt or mpp
 

再生可能 エネルギー

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MT off grid

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Messages
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Tier-1 hardware typically has notably lower idle draw and improved surge capability.

My 5kW Quattro burns 27W. Magnums, Outbacks, Schneider, etc., all have more modest idle consumption. You basically pay more for the inverter/MPPT with Tier 1, or you buy more battery for the low-end stuff.
Maybe you have an answer, i have been told by several members and confirmed from growatt that the growatt 3000TL lvm-es already has the N-G bond screw removed so that the bonding can be done at the panel, I was told that on the U.S version of the MPP lv6548 N-G bond screw is still in place but there is a relay that controls when the N-G bond occurs and that the N-G is needed to pass UL even thought it's not UL listed I know that manufacturers have different build designs but how could it work safely if two manufacturers say the way they built it is the correct way, this is one of the responses I got from MPP (not watts247)

"The way GFCI works exactly is that you will need to BOND N-G under inverter mode (you cannot leave it OPEN), such that it will convert what is normally a "float" output to a zero differential so that way your RCD doesn't trip. This is tested under UL and if you're saying this is a problem then clearly UL has a problem, otherwise how did they pass this?"
 
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LazyDragon

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Growatt and MPP are basically the same unit. I have an MPP5048 and Growatt 3000. Both use 60w, not the 100w listed. Double that of course if you have 2 3kw units in parallel. The extra utility from having everything in 1 unit is nice.
Until...
They start to act squirrely on you. These units definitely have their quirks and issues. I use chevy volt batteries, with an operating range of 40v-49v. The units DO let you modify them to the unusual voltage range. Some of the Tier 1 devices simply don't support "odd" ranges. But it does cause some challenges on the MPP.
My MPP5048 has 2 4kw solar inputs. Once of which is goofy so I don't use it, even after replacing the MPPT board.
The monitoring app for the MPP units works, but it really is crappy. No realtime usage, no reporting.
The MPP5048 is setup for 240 split phase output, so it requires 240 split phase input from the Utility (generator). You can't get a 240/split genvertar and I don't want to run a big, loud, propane sucking generator. I bought a nice little 3kw genverter but it only puts out 120v AC. I shopped for a 48V battery charger, but most of them only work on the "normal" 48V battery ranges, not my custom range. And to get any decent Amps, they chargers were expensive.
That's why I bought the Growatt 3kw unit. It only cost a bit more than a simple battery charger, and it gives me a custom control charger, alternate solar inputs, and a single phase backup inverter for emergencies.

For both units, you get a lot for what you pay for, but expect some hassles depending on your setup.
 

MT off grid

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Messages
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Growatt and MPP are basically the same unit. I have an MPP5048 and Growatt 3000. Both use 60w, not the 100w listed. Double that of course if you have 2 3kw units in parallel. The extra utility from having everything in 1 unit is nice.
Until...
They start to act squirrely on you. These units definitely have their quirks and issues. I use chevy volt batteries, with an operating range of 40v-49v. The units DO let you modify them to the unusual voltage range. Some of the Tier 1 devices simply don't support "odd" ranges. But it does cause some challenges on the MPP.
My MPP5048 has 2 4kw solar inputs. Once of which is goofy so I don't use it, even after replacing the MPPT board.
The monitoring app for the MPP units works, but it really is crappy. No realtime usage, no reporting.
The MPP5048 is setup for 240 split phase output, so it requires 240 split phase input from the Utility (generator). You can't get a 240/split genvertar and I don't want to run a big, loud, propane sucking generator. I bought a nice little 3kw genverter but it only puts out 120v AC. I shopped for a 48V battery charger, but most of them only work on the "normal" 48V battery ranges, not my custom range. And to get any decent Amps, they chargers were expensive.
That's why I bought the Growatt 3kw unit. It only cost a bit more than a simple battery charger, and it gives me a custom control charger, alternate solar inputs, and a single phase backup inverter for emergencies.

For both units, you get a lot for what you pay for, but expect some hassles depending on your setup.
So you like the MPP but use a growatt for a battery charger? I have so much to learn but so little time
 

Zwy

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I have been looking at either two growatt 3000 one growatt 5000 or the mpp lv6548, I think I have settled on the growatt but im not positive, I like the option of two 3000 growatts because of the one is none two is one way of thinking plus I get 6000 watts and split phase and only needs 120 volts to get pass through and I would also get two PV inputs, the 5000 growatt has a bit easier of install but it needs the transformer to get 120 volts and I'm not sure how well that works and can't find any information about it needing 120 or 240V for pass through but I only getone PV input. The MPP lv6548 is also a very nice inverter but im still confused in if it has bonded neutral or not but again it needs 240V to be able to use the pass through option and I like the two PV inputs on it. I'm almost positive no one here has used all three of these but im looking for real life experiences with these.
Read thru the responses, this reminds me of the mainstream media and how they put out "misinformation". It's all about whatever narrative they want to present to get a desired result. Have we really gone down that rabbit hole?

If you will have the inverters powering loads 24/7, there is isn't an "idle draw", it's part of running your system on solar power. I have a baseload in my house of 150W constantly, it will require the units to be on 24/7.

I have 2 LV6548's, not installed yet but getting closer by the day when I get time to work on the project. A few things to keep in mind, if you ever plan on system expansion, go with the larger inverters. I have a SPF3000 in my truck camper, it works fine for that use, I would only use one in a house for a critical loads panel.

All of these units bond N-G under inverter power, unless you purchase the GW SPF5000 from Signature Solar. I'd steer clear of that unit anyway, plenty of choices that would be better if you want 240V split phase in a single unit like the LV6048. As for the N-G bond, really the correct place for it is at source which is the inverter. Installing a 3 pole double throw transfer switch is highly recommended, Filter Guy and myself plus others had numerous discussion about the wiring of these units that bond N-G under inverter power.

Define your needs first, what is the max draw, the usage of the inverter (home, RV, off grid, emergency power), the size of your PV array. Then search in the archives here, plenty of threads about all of these units and educate yourself on what each one is capable of. Don't be afraid to search other brands, there might be a feature or function that you might prefer, it's all about what needs and usage you define.
 
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