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Before I get into my experience of the 18K PV inverter, I owe this community a debt of gratitude. I started this DIY solar journey back in Jan of 2022. At the time, I didn’t even know what an ampere hour, KWh or BMS was. It was because of this community and some persons on YT like Will, Andy...

Has any one placed the EG4 6500EX inverters under an oscilloscope to examine it's waveform to see how clean the power is? Found a very short video on YT with a guy testing the SunGold Power 6548, ( which is similar to the EG4 6500EX) and the waveform was not as clean as I would've expected.

Does anyone know of any 2 pole DIN rail non polarized DC breaker capable of handling say 200/250A? If such a breaker/switch exists, looking to use it as a main switch for a 48V lifepo4 battery. Would appreciate this forum's thoughts/recommendations. Thanks in advance.

Hi, does anyone know where I can purchase online in the USA, the Noark non polarized DC breakers that Andy from Offgrid Garagae uses for his main switch for his battery bank? The resellers I found in Australia apparently do not export out of the country. Thanks.

Hi all, just noticed today that the remote monitoring tool (web tool) for the 18K PV is now refreshing its data once per minute instead of once every 5 minutes. A very welcomed enhancement. Great job EG4.

Hi all. So I've always assumed that I needed a main switch/breaker which will disconnect all batteries from my DC busbar...kinda like a kill switch. A single switch that I can throw that just disconnects all the batteries from the common bus bars which the inverters also connect to. In recent...

Hi all, below is what I am hoping is my final design for my EG4 inverters, connected to the grid as backup and utilizing a change over switch. The change over switch would allow me to get AC power directly from the grid to the house, completely bypassing the inverters system completely. The 2...

Hi all, I'm wondering of all the folks with the EG4-6500EX who have these connected to the grid as backup, how is this configuration working for you since the various firmware upgrades for these models have been released? I have 2 of these inverters and have a choice of setting these up as fully...

Hello all. So I've been doing quite alot of research on the Batrium BMS system. It's certainly a rather complex BMS but I've really warmed up to it alot and absolutely love that I could use a remote trip breaker that I can control even if I'm not home. This type of remote functionality is very...

Hi there, I'm wondering if its ok to use non-conductive tape to compress my cells. Let's take for example a 3P16S battery using LifePO4 prismatic cells. I'm thinking that each 3P cell can be wrapped in tape and then 16 of those tape-wrapped 3P cells then connected in series to complete the...

Hi all, has anyone had any recent experience shipping cells directly from China to the US that you can share how long it took from the time you placed the order through say Alibaba to the time the cells arrived at your door? Thanks in advance.

I've noticed that the MPP 6000 series and Growatt 5000ES and a few other Growatt models recommend a battery sizing of 200Ah (10.24KWh = 200ah*51.2v) per inverter. Does anyone know what is the basis of this recommendation? When I run the numbers, the 200Ah recommendation seems oddly low. For...

I'm looking to go completely off grid and intend to build quite a large LifePO4 battery bank. I intend to use either 3 MPP LV6048WP or LV6548 inverters. I'm considering intentionally oversizing my battery bank capacity (Ah) such that I can run the house on batteries for 2 to 3 days including 1...

Hi, so I'm working on my build which includes 2x EG4 6500EX inverters in split phase. I would like to utilize a double throw switch (on-off-on). This switch would allow me to direct power to my house from the solar or placing the switch in another position, it will allow me to power directly...

Hi all. So I've finally selected and ordered my BMS & balancer of choice after much research, over analyzing and over analyzing again. I'm going with a few QUCC 250A BMS and using the Neey 4A balancer. Each battery will be 2P16S (will be looking to order cells soon). I've been looking into...

Hi all. Please consider this scenario. I have 2 AIO inverters (EG4 6500EX) and both are connected to the battery bank via the DC bus bar. Now, if I wanted to add more panels so I can charge the batteries a bit faster but I don't need another inverter because I don't expect my loads to increase...

The 6500-EX looks like a really good product but I need to understand how it handles faults in split phase configuration. Consider for example, using 4x 6500-EX inverters, where inverters 1 and 2 are on one 120V leg (L1), and inverters 3 and 4 are on the other 120V leg (L2), so we have each 120V...

Hi all, recently saw on Andy's YT channel, OffGrid Garage that he has some Nanque non polarized DC breakers. Are these good to use for a DIY LifePO4 battery? My DIY 48V battery needs to be able to handle up to 200A continuous, so I'm considering getting the 4P 125A breaker and using 2 poles in...

Hi all, I'm wondering what's the recommended settings for the Neey 4a active balancer 4th gen, in terms of settings to turn on or off balancing. I'm using lifepo4 cells 16S. I intend to have my BMS low voltage disconnect at 3v and the high voltage disconnect at 3.45v. Thanks in advance for the...

Hello and happy new year to everyone. I recently wired in my EV to charge from solar and batteries using the 18KPV and it has been working great. The EV charger is wired on the load output side of the 18KPV inverter and whereas this does work well, wiring using this method, the EV could...

I need some help selecting an isolation transformer. What I'm looking for is a transformer that will have 240 single phase on the input side, and will provide my with 240V split phase on the output side. The output side would therefore have the center tap, which will provide 120 from L1 to...

Hi all. I'm using the Blue Sea systems PowerBar 1000A bus bars which are made from tinned copper. If I want to ensure a very good and effective connection to the bus bar, does it make a difference if I use copper or tinned copper lugs? And if I should use tinned copper lugs, does that then mean...

Hi, I'm in the process of building out my 2x EG4 6500EX inverters in split phase mode. I think I'm going to have them fully off-grid as opposed to what I was looking at previously of having the grid as backup...seems to be simpler for the time being. One of the things that always concerned me...

Hi all, I'm looking for some advice on CHZYCO DC breakers from aliexpress. The link is https://www.aliexpress.com/item/3256804067731476.html?spm=a2g0o.cart.0.0.6e4938da5GUPgc&mp=1 Basically, I'm looking at the 250A double pole breaker as a battery disconnect. Is this a good DC battery breaker...

I've seen in this forum much discussion concerning neutral bonding issues with MPP off grid inverters (and Growatt offgrids). Would the MPP LVX6048WP have similar ground/neutral bonding concerns seeing that it's a hybrid inverter and not labelled as an off-grid?

Hello. So I'm preparing to commence my battery bank build which will be comprised with 2x 2p16s batteries (LifePO4 3.2v 280Ah cells) to commence with and I will probably add a third 2p16s down the road, hopefully in a few months time. Each battery will have its own BMS and T Class fuse. My...

Hi all. I'm using Taixi MCB breakers for my solar panels which will connect to my pair of EG4-6500EX. I'm using 4 strings each comprised 7S (505W each) panels for each MPPT for each of the inverters. The MCB breakers are 25A 1000V and can break both +ve and -ve poles. My panels have a Voc of...

Hi all good morning. I've noticed that balancing current varies tremendously from BMS to BMS. I'm still working on finalizing my design for my battery build which will be somewhere between 64 and 128 LifePo4 cells....I still haven't decided as yet but seriously considering starting with 64 now...

Hi all. I’m hoping for some guidance from this forum on the type of double pole breaker I should be using for my solar setup. I have 2x EG4 6500EX 48V inverters and will be using 32x 505W panels. The panels are being configured in 4x 8S strings, one string for each of the MPPTs of each EG4...

Hello, I'm seeking some advice on a battery configuration I'm looking to build. I'm reasonably new to solar but have learnt alot in this forum and from watching WP, David, Ray, Off Grid and many others on YT. I'm looking to get 96 LifePO4 280Ah cells to build a total of 86KWH battery storage...