Adding storage to my Enphase system

[GXMnow]

It is now 8 am. The Enphase system is producing 380 watts, the XW-Pro is down to only pulling 100 watts from the battery bus, but the Victron system is also making nearly 300 watts, so the battery voltage is now going up. So far, the Enphase system is working perfectly. The individual panel data seems to be coming in very slow, and the event log has not updated since 6:30 am, but the overall production meter is reporting 400 watts now. Even the online "Enlighten" is showing production for the first 3 bars matching yesterday. It is not showing any issues running AC coupled into the XW-Pro in "Off Grid" mode.

In the 5 minutes I have been typing, the XW is down to pulling just 14 watts from the battery. It will be going into charge mode any minute now. And load power is going negative right now. AC coupled charging has begun. The Enphase panels are now supplying more power than I am using in the house. The Schneider InsightLocal dashboard is showing 100 watts of charge current, and the Victron is producing another 340 watts of charge power on top of that. The Battery bank has about 8 amps of charge current going in now.

No errors of any kind from the Enphase system. It is producing right on track with what it did yesterday morning. But the log file still has not updated since 6:30 am. Production meter is over 600 watts, and XW charging at 250 watts. And there is virtually no flicker, even on my cheapo LED lights. The new firmware on the XW-Pro and Enphase iQ7 micros seems to have cured my AC coupling issues completely.



The bars are today, in AC coupled off grid mode, the lines are yesterday, and same day last year, both on grid.


Here you can see the system ramp from running on battery to charging from AC coupling. It crossed zero current at 8:12 am.

 

[GXMnow]

The grid came back up. It was so seamless, I am not completely sure when it came back. There is no glitch at all in any of the graphs or charts. All I can see is a small drop in the battery charge power from the XW Pro as the PLC commanded it to export 200 watts to the main panel. That happened at 9:33 am. The Enphase system was pushing over 1,500 watts while AC coupled off grid. All 16 inverters were reporting over 80 watts. They are now pushing over 2,000 watts, but the per panel data is still more than 20 minutes behind and the event log still has not updated since 6:27 am. Hopefully it will catch up at some point. But the main thing here is the system worked flawlessly off grid. I never saw even a single microinverter shut down. The power graph is still tracking just like any other day, even when the grid came back, no glitch at all.

 

[GXMnow]

The logs on the Enphase system finally updated with all the inverters shutting down as the sun set. There is not a single log entry between them powering up at sunrise and the shutting down at sunset. No errors of any kind while they were producing off grid, or even when the grid came back and the XW-Pro reconnected to grid. They just stayed producing right on through without a glitch. Due to the shadows from the huge palm tree, a few panels went offline by 4:30 PM with "DC Power Too Low", but no log entries when the grid went down last night, when it was off grid this morning, or when the grid came back up. The Enphase system made a total 24.6 KWHs today, compared to 24.7 yesterday and the day before.

The last time I went off grid, with the old firmware, the system produced less than half what it did on grid as several inverters kept shutting off due to "Grid frequency unstable" errors.

Here is the graph for today's production. Also has the line for yesterday and last year.

And here is what the XW did today as well. Load was a bit less than normal as I turned off a few things, and with the cooler weather, the A/C only ran 4 times by the looks of it.


The battery topped out completely and the Victron even went into Float mode for over 3 hours. It's still odd that the XW-Pro shows the battery voltage nearly 0.4 volts higher than it really is. The bus bar in the battery breaker box measures very close to the 57.6 volt reading in the Victron App, and the JK BMS in the old battery bank shows about 0.1 volt below that while it was charging, which makes sense with wire voltage drop. But the XW here is reading high at 58 volts where it is not pulling or pushing any current over the 2/0 cables to the battery bus bars. And right now, I just checked it. The JK BMS is showing 56.13 volts, while the XW-Pro is showing 56.54 volts even though it is drawing 13 amps over the cables. It anything, the current should show a small voltage drop, but it doesn't, it just reads 0.4 volts high. I pretty much just added 0.4 volts to my battery voltage settings to make it hit what I want at the battery using my Fluke meter. The JK BMS and the Victron charge controller both read very close to what I see on my Fluke meter, so I just accept the XW-Pro DC voltage reading is wrong. When I use the voltage to estimate the SoC, I also have to subtract that 0.4 volts. The lowest I hit while running off grid this morning was 53.35 volts -0.4 = 52.95 / 14 = 3.78 volts per cell. That is still over 65% SoC. I certainly didn't need to shut down as much as I did. Once the sun came up, the system recovered and fully topped out the battery to my 57.6 volts (58 shown by the XW). 4.11 volts per cell or 95% SoC. It was topped out by 2 pm. The XW stopped charging before noon. I'll have a chunk of grid export from today.

Here is yesterday as well. Can you even spot where the grid failed?

I don't have the SCE graphs for these yet, the web site showed "Delayed Data" probably due to the power failure.

 

[GXMnow]

So Cal Edison posted up the data this morning.

Here is the day the power went out. 8/23/24

It was going along like any other day. The consumption from 3 am to 8 am is because I block it from sending power to the main panel to ensure I was having enough in the evening. I can probably push that back a couple hours now. Once the sun came up, we had the small export until the battery hits 56.8 volts or so. Then it exported all the extra solar from the Enphase system. The small blip of consumption at 6 pm is odd. My guess is we had laundry running and the A/C kicked on. Maybe the dishwasher was running as well. I can only push 16 amps back to the main panl, and the main panel load must have exceeded that for a while. Then the 10 pm and 11 pm bars are blank with the "Event" triangle symbol. That was when the grid went out.

The grid then stayed out all th way to the 9 am hour. Since I was on low consumption, the battery was charging pretty quick from the solar. Once the grid was back on, the battery was full to 56.8 before noon. So the Enphase ended up exporting over 2,500 watts for 2 hours, and then tapering off as the sun started going down. Once again, my 16 amp export to main panel limit struck. We consumed a bit more in the 5 pm and 6 pm hours at the higher rate. Not too big of a deal, but I really want to upgrade that back feed breaker from a 20 to a 30 so I can push a bit more. I will still never really export any more, because it will only push more current while it is being consumed in the main panel.

If I wanted to add a chunk more mat to my PLC program, I could have it keep exporting 16 amps when the loads are lower to net out zero or some export in the 4 pm to 9 pm block. I would have to calculate how many amps I am falling short and for how long, and then export that much extra when the load is low enough. It's not a big deal on days like this. I still net exported over 9 KWHs. The import at the high rate was under 1 KWH.

 

[GXMnow]

It seems the power failure fried one of my PZEM power meters. The system seems to be working perfectly, but then I noticed it was not covering the load in the main panel. I checked, and only one of the PZEM meters is giving data. And without data, my PLC is setting the XW-Pro sell current to zero amps. I want a 3rd meter anyways, so I am ordering another from Amazon, but I will see if I can get this one to reset. A simple power cycle did not work. It might be cooked.

 

[GXMnow]

I just got the new PZEM-016 meter installed and my system is back to 100%.

Without the meter yesterday, I manually told it to export 12 amps for a while at the high rate to zero out any import I had, it worked out just fine. After I got it back up and running, I did a quick toaster test. It read the current and the export to the main panel increased by about 800 watts as expcted.

These meters are certainly not perfect, and now I know they also don't like power surges. I have have to install a surge suppressor ahead of them. Right now their voltage inputs are going straight to the main grid breaker panel. I opened up the dead one and nothing looks cooked. It has a single diode and capacitor, and that did charge up to almost 170 volts which is right for 120 volts x 1.414 for the sine wave peak. But the small isolated switching power is only putting out 0.7 volts instead of the 5 volts it should have, so something is dead. I may try to trace it out, but not today.

 

[GXMnow]

It has now been a few days with the new power meter installed. The calibration is certainly close enough. I have a few days of data for what I was exporting due to the meter readings and the energy reported by SCE. It all looks right on the curve as expected.

Here is the solar production from the 28th


That was 2 days ago, and it was nearly cloud free, but a little hazy.
Here is how the XW-Pro handled the power, charged the battery, an inverted to run the loads.


After 8 am, the solar input exceeded the loads and the system went into charge mode, leaving a small amount to export as the battery charged up. Shortly after 2 pm, the battery hit the charge limit set in the XW. The Victron DC panels kept charging. The A/C system only kicked on 4 times that day. The current sensors reported the load and the XW-Pro responded by increasing the inverter output and covering the heavy load back in the main panel. Each time the A/C shut off, you can see the battery voltage return to climbing from the DC charge current all the way out to nearly 6 pm. After that, the DC system also dropped enough that the house loads were still bringing the battery state down. From 2 pm to 6 pm, the extra solar production from the Enphase system was being exported. Here is the data from So Cal Edison showing what the utility meter reported.

The only consumption I showed was from 3 am to 7 am. It topped out at less than 200 watts. The only reason that happened was due to the grid sell time limit set in the XW-Pro. In the very hot summer, when the A/C was running a lot, I set that to preserve just a bit of battery power to use later in the day when the A/C would run. Since the weather has cooled off a bit, I don't need to do that as much and the battery is getting basiclly full each day, so I have moved the export end time forward to 6 am now. In the past, when I had it only export for 24 hours a day, So Cal Edisone figured something must be wrong and they added a consumption offset to my reading. I want to make sure they don't do that again, so I will leave it importing a little grid power each morning. For now it will be about 2 hours instead of the 5 hours shown on this one day.

With the cooler weather, I am back over producing most days. I keep thinking about how I might be able to automate the seasonal settings changes, and also having it react to a day of bad production etc. With how well the system works, I don't really think it is that important. If I left it alone all year, it does all balance out pretty well. I will be ending this plan year with a decent energy credit. Too bad they will only give me 6.5 cents per KWH for it.

 

[GXMnow]

The last 2 days, my system had topped out the battery and the Victron had o drop to float mode which throws away some energy. But on these same days, when the A/C kicked on before 4 pm, I was using some grid power because I was blocking the XW from selling to grid. 2 days ago, I moved the Grid Sell Block Time to end at just 2 pm. If the battery is not full, it will still stay in charge mode, but when it is full, like it is today, it will use battery power to keep trying to zero the grid current. Today, it did it just before 3 pm. The A/C has now cycled 3 times, and it looks like between the Enphase power and some battery, it was able to keep the grid power at zero. And now the battery is staying at just 57 volts and the Victron is staying in Bulk mode to get all it can from the DC panels. With the holiday weekend, I might not see the result from SCE until Tuesday. But from the Schneider graphs, it is looking very good.

 

[GXMnow]

We are having yet another record breaking heat wave. Another week exceeding 100F every day, in September!

My solar production has been down, and my A/C is running non stop. I decided it was time to rinse of the panels again. We have had 2 more near by brush fires.

It normally takes me an hour to see the production difference on the Enphase panels, but the DC panels with the Victron charge controller give me live data and a hi res graph. Before hosing off the DC panels, the Victron was producing 890 watts at 9:50 am. By 9:55 am, I was done rinsing the DC panels. The power increase to 1,125 watts. Some of that is also due to the panels being cooled off by the water, but that is more than a 25% power increase. That's HUGE!

I don't have an update from Enphase Enlighten yet. It takes like 30 minutes to see a change. I logged into the Envoy, and it is now producing 2,440 watts at 10:05 am. Yesterday the 10: to 10:15 bar averaged 2,200 watts. That looks like just an 11 percent boost, but at just 5 minutes in, while the sun is rising, the average for the 15 minute chunk is likely to be a bit more. The Charge rate on the XW-Pro looks like it went up from 17 amps before the rinse to 25 amps after the rinse. That looks like a >45% power increase, but the total power power increase is far less. This is only reflecting the "Extra" power beyond what the house is using. The house is using 860 watts. So the power from the Enphase system looks more like it went from 860 + 860 = 1,720 watts before rinse at 9:45 am to 1,300 + 860 = 2,160 watts after the rinse at 10:05 am. 2,160 / 1,720 = 1.255 or very close to the 25% increase I saw on the DC panels.

Once the panels warm back up, I will be very happy to see over a 15% increase over yesterday's production. I just got the next bar on the Enphase graph for the 9:45 to 10:00 time slice. So that is likely just partial cleaned on just the lower 8 panels. The increase from Yesterday to today on that same slice is 2,000 watts to 2,200 watts for 10%. The next slice, 10:00 to 10:15 should show most of the increase. I finished rinsing the upper panels right at 10:00 am.

Here is the Enphase production so far today. (I stalled to get the next 15 minute update.

The rinse made a huge difference. I am still not up to last year's production, but it is also much hotter out that it was last year.
And I might as well include the graph from the Victron.

You can see the huge increase in power as I rinsed off the panels, but then as they dried and heated up, the power dipped off a bit. The downward spikes in the power is the Victron MPPT routine checking for shading. It pulls the panels to a lower voltage to see if the current will increase. When it doesn't, it goes back to where it was and does small adjustments again. It seems to work very well with partial shading.

 

[GXMnow]

As solar noon is approaching, the power improvement over yesterday is tapering off a bit. It is still near 10% up, but you can clearly see todays bars are falling closer to yesterday and further from last year. The actual temp in the shade now is already up to 98F (37C) and my other outside temp sensor, still shaded, but under the roof overhang is showing 107F (42C). The actual PV Panels on the roof in the intense sun are probably well over 140F (60C) now. On the Apple weather app, the next 7 days range from a high of just 102F to 112F (38C - 44C)

 

[GXMnow]

Over a week straight going over 100F (38C) has taken it's toll, and it's not over yet.

Not only is my A/C running near constant, I just lost the power from half of the DC array. It is way to hot to climb on the roof to look into it, I will do it after the sun is mostly down tonight. Here is the trace from the Victron charge controller.



If I am lucky, it may be a bad MC4 connector. If I am not lucky, it is an open circuit inside one of the panels.

 

[Hedges]

Power dropped from 1300W to 650W.
That could be one of two strings suddenly disconnected.
I had one of two strings about 50%+ degraded and was able to identify which with Harbor Freight clamp ammeter.
Greater difficulty was finding which panel put out low Imp.

Oh, I also had zero on one string. Wire pulled out of wire nut.

Wish we had non-contact DC voltage, check E-field near wires.
I think such things do exist. In high tension powerline and lab equipment, "corona discharge" occurs when fields are extremely high. Should be possible for a meter (e.g. a FET) to detect a field it is exposed to.

 

[GXMnow]

Mystery Solved. Got on the roof as the sun was rising. The new row of 200 watt panels was putting out about 1 amp already. Zero from the array of 10 x 100 watt panels. Got the amp clamp to the positive side "Y" connector. I saw 0.2 amps from one leg and - 0.2 on the other leg. So 50 of the panels are back feeding the other 5, but at a tiny current. I pulled the fuse on the end and it was good. My first thought was one row had some shorted bypass diodes.

Then I got to the negative side "Y" cable. The fuse holder on the end was a little melted.

I was not even able to unplug the MC4 connector at one end. The housing is deformed. The fuse is blown as well. I was still concerned about the shorted bypass diodes, and the other array back fed enough extra current to do this. But when I measured the voltages. The array with the open fuses, VOC voltage, was 15 volts higher than the working array at VMP feeding into the VIctron. So the panel voltages on both 5 x 100 watt strings was good. It was just the failed fuse holder.

I am not 100% sure of the order of failure, but the time it failed gives me a clue.

The failure happened right at Solar Noon. This fuse holder was crossing the gap between 2 panels. So not only was it at maximum current, the air was at 112 degrees, the panel frames it was wire tied too were probably over 150 degrees, AND the sun was also shining directly on the housing where it is deformed. See how it is a diagonal line. Add it all up and the plasit softened enough for the fuse to lose solid contact. It started arcing and the fuse blew. The housing is melted enough that the MC4 from the "Y" cable will not come out. I pulled the terminal out, and test fit it and it is still a good fit in the terminal of the fuse holder, so the connection there was god and no sign of arcing. All the damage is between the fues and it's end contacts. It was just too hot. The other 3 fuses all look fine, but none of them are in the direct sunlight. Not sure how I missed that when I wire tied it in.

With only a 15 volt difference (80 to 95 volts) I got brave and hot plugged the second row in without the negative side fuse. It is still fused on the positive end. I then saw about 2 amps coming in on each side of the "Y" and 4 amps out of the "Y". All 10 x 100 watt panels are making power again. But I need to replace the "Y" on the negative end and get a new fuse and holder as well. I then went and grabbed the graph from the Victron.

The power jumped up from about 390 watts to 790 watts. The 10 x 100 watt array looks like it is making a hair more power than the 5 x 200 watt array. But it is so close to not matter. When I get the new Fuse holder, I will make sure it is completely under the aluminum frame.

 

[Hedges]

Consider whether root cause may have been incompatible non-genuine MC4 connectors.
Is the MC4 fuse holder from a top name? Same name as mated parts?

The PV currents we get these days are well above what they used to be, and those fuse holders might have been OK back when we had 5A panels.

 

[GXMnow]

Consider whether root cause may have been incompatible non-genuine MC4 connectors.
Is the MC4 fuse holder from a top name? Same name as mated parts?

The PV currents we get these days are well above what they used to be, and those fuse holders might have been OK back when we had 5A panels.

There is no thermal discoloring at all at the MC4 pins, and they still plug in tight and make a good contact. All of the heat damage looks to be at the end of the fuse in the holder. The terminals are pressed against the ends of the fuse by tension in the plastic housing. And that housing looks like it got soft and lost it's tension. It has fingers that seem like they would hold up the sides of the fuse a bit, but they really have no tension against the fuse. But maybe they also lost temper from the heat. Once the end of the fuse arced, it was all over. But it did fail safe and nothing got out of the fuse holder. With the parallel string still producing, the voltage across the bad connection only hit about 15 to 20 volts as it went open circuit. So it didn't seem to arc much at all. The current should max out around 10-11 amps and the fuse was a 15 amp. In this heat, the pow loss is due to lower voltage, but the current can actually go up. I just looked back and change the graph to show PV current. It was at 19 amps before the fuse let go. But that is the current for both arrays together. So less than 10 amps to a 15 amps fuse. So I really think it was extra heat from the sun and the soft housing making a bad connection that made the fuse pop.

It is a ceramic body fuse rated at 1000 volts DC and 20,000 amps interrupt rating. It has a CE rating on it as well. The issue was the holder, not the fuse. But it was a completely safe failure. I finally got the pin out of the other end of the fuse holder. This is where all the heat damage is. The MC4 end of the pin is clean and shiny. The Fuse side is blue. It was not making a good connection to the fuse.

To be safe, I am also changing the "Y" cable and the connectors on both ends going to the fuse holder. I inspect the other 3 fuses and they are completely fine, no sign of any heat stress. They are all also fully shaded under the aluminum framing.

 

[GXMnow]

Just placed my Amazon order for 2 new fuse holders and fuses so I will have one spare. Also got a new pair of 30 amp rated 10 AWG "Y" cables, the old ones feel like #12 wire at best, maybe just #14. . And a pack of 6 pairs of MC4 connectors. I will look over all of them and replace any that look distressed at all. They are all on "Prime" and will be here tomorrow.

I have a roll of the shiny aluminum duct sealing tape. I wonder if I should protect any wires that pass a gap between panels so it reflects the sun instead of melting the insulation? It really looks like the sun on the fuse holder was the last straw. Would shading it have saved it?

 

[GXMnow]

We are having our first reasonable weather day in 2 weeks. It's ONLY 84F at noon instead of 105F.

I got the new fuse holder and the "Y" cable replaced. While the pin on the end of the "Y" cable looked ok, it obviously got vey hot, and the plastic housing of he MC4 connector was warped pretty bad. I also bough t a pack of new MC4 connectors and I was going to replace the one on the other end of the fuse as well, but it looks like all the heat was on the other end and I can't see any damage. It plugged in nice and snug into the new fuse holder and I am not seeing any sign or resistance.

The new Fuse holder is a much better design than the old ones. I may end up changing the other 3 as well. I double checked everything after the new parts went in. Each 500 watt row of panels are pushing about 4.5 amps at almost 80 volts, about 350 watts before noon. After the "Y" I saw the added up 9+ amps. And while I was at it, I checked the row of 5 x 200 watt panels, they are also putting out just over 9 amps. With the cooler air, the array is pushing over 1,450 watts into the batteries. The Enphase array is also doing better (200 watts more than the same time yesterday) running the whole house, AND pushing another 2,500 watts into the batteries. Total charge power is over 70 amps measuring with my Fluke amp probe, so I am seeing about 3,700 watts going into the batteries. This is the first time in 2 weeks my A/C has not had to start running before noon.

I did the whole swap in under 10 minutes.

Power is still climbing as it is not quite solar noon yet.

 

[doctron]

I faced same issue of loose connection in my deye hybrid.sudden power loss and 0 production. Removed that connection in dcdb box and installed ferrule on the negative terminal and another fuse of 20Amp. Since then no looking back. In full rainy days.I am doing my usual 10 units per day.

 

[doctron]

I suggest increasing your storage with few more cell packs.goal I would keep is zero import from grid unless failure affecting production.i started with 15kwh and now at 34 kwh. Storing all the energy i need for 2 days.

 

[GXMnow]

My battery bank is 36 KWHs and stores a bit over 1 day of normal use. But when it was well over 100F (38C) for 11 days straight, the reduced production and the A/C system running constantly caused me to run the battery down to my low cut off several times and it would not charge up enough each day from sun alone. So I did charge from grid on the cheapest overnight rate a few times. I ended up buying about 100 KWHs from the utility for the month. That's not too bad. My electric bill for this crazy month is going to be about $35 USD. Similar weather conditions before I had solar panels would result in a $400 USD bill. And I still have a $200 credit on my account, so I still won't be paying a bill.

To completely cover this kind of weather, I would need nearly double th solar panel power and at least 50% more battery. It is just not cost effective. I over produce for 8 months of the year, and the extra energy I "sell" to the grid ends up covering those crazy days when my system falls short.

Today was an odd one. We had spotty clouds all day. But when the clouds would clear, the panels were nice and cool, and surrounding clouds were also reflecting more light onto the panels. The result was bursts of more power than typical. The Enphase panels were supplying all the power the house needed and still charging the battery bank at over 53 amps x 55 volts = 2,915 watts. But then a cloud would pass and the power would drop to less than needed to run the house. Before 4 pm, I le it take the extra power needed from the grid. After 4 pm, we go to the high rate, so then it pulls from the battery.

 

[GXMnow]

So Cal Edison just posted my Aug. - Sept. bill which includes my billing year "True Up".

What a total rip off. Last year, I was paid out at 6.5 cents per kilowatt hour for my net surplus. That was low, but I get it, it was close to the wholesale rate. This year... I only se a credit of $20.58 showing on my bill. Hmmm. What is this for, that is a small credit. Well, they only paid out 1.892 cents per kilowatt hour. $ 0.01892 for my surplus net generation of 1,088 KWHs. So the wholesale rate for electricity is less than 1/3 what it was last year??? REALLY? So shouldn't my billed price also be 1/3?

This is why I absolutely can't justify adding more panels at this point. As long as I net out close to zero, I pay no bill. Any extra I produce now has no value at the end of the year.

My energy credit was showing as $319.22 for the 1,088 KWHs, even on this bill. That is the retail rate, at the time of day I exported it. And that is what I was being credited, if I used up that power.

I am now starting the next plan year with a credit of just a bit over $200 towards the taxes and fees. At about $15 per month in fees, that will get me in several months, so I still should not have to pay towards a bill for a while.

 

[Hedges]

If you ever have to pay for power, do the math to see if more panels or batteries would be cost effective to avoid.

I think break-even is around 5% to 10% utilization of DIY hardware.

Better to backfeed and waste surplus than to buy from utility.

 

[dougbert]

man, so sorry they are continuing the destruction of netmetering

decades ago, when they started the system, it was setup to boot-strap solar for homeowners. Then it worked SO WELL, the PoCo's went "OH S***" this not good for our bottom line. What if most customers do this? Hence, CA does v1, v2, v3

My state of Utah got Netmetering going, and my muni PoCo currently pays 9 cents/kwh. They also require all Netmetering customers enroll in TOU. My son is on Netmetering and it helps cover his mini-splits costs. He has 10kw array, 7kw inverter - all SolarEdge - no battery. He mentions there battery is so expensive. Doh, son

I did TOU as well to get the off-peak rates of 7 cents for winter and 10 cents for summer, so if needed I can charge my battery at lowest fee. Peak is 14 cents and 20 cents, respectively. Been told they will require all 14,000 customers to do TOU "sometime in the future"

I do not do netmetering as I do not want the entanging contracts etc. I follow the first line in my Signature for a reason

 

[Hedges]

My son is on Netmetering and it helps cover his mini-splits costs. He has 10kw array, 7kw inverter - all SolarEdge - no battery. He mentions there battery is so expensive. Doh, son

More expensive, but may be available from unsold inventory. Here is the "explody" LG battery, five of them model LG RESU-10H type "R" for Solar Edge, asking $3000 each and local pickup only:

LG RESU Energy Storage System RESU10H(R) JH3 | Brand New In Box | eBay

<p>Introducing the LG RESU Energy Storage System RESU10H(R) JH3, a reliable and high-performing battery solution for your energy needs. This battery is designed to provide long-lasting power to your devices and appliances, without any compromise on performance or reliability. </p><br /><p>With...

www.ebay.com

I bought a couple elsewhere, for less. Turned out one was type "C" for my SMA, other is type "R" for Solar Edge. It is 300 lbs. to ship on a pallet. That might work for him.

But if he has net metering, hardly worth the somewhat higher cost of these batteries. Only suitable for convenience of backup during outages.
I put retail price of the LG battery at $0.50/kWh over its cycle life. The ones I got cheaper are about $0.10/kWh of cycle life before shipping cost. Still 2x what LiFePO4 server rack batteries sell for (same price per kWh of capacity but half the cycle life.)

BYD, if supported by SolarEdge, would be better.
I think the difference between LG Type "C" that I can use with SBS and Type "R" is SBS uses CAN bus and SolarEdge uses RS-485.

But also, I think "SolarEdge" model is PV only, "StorEdge" is hybrid with HV battery.
If my Type "R" battery is useful for him, could arrange shipping.
(My other idea is trying a CAN bus to RS-485 converter, see if I can use it then.)

Thread 'LG RESU-10H Type R for SolarEdge, Fronius, Huawei $2000'

Aug 24, 2024

For sale, 9.8kW (9.2kW usable) LG RESU-10H Type R for SolarEdge, Fronius, Huawei
$2000, delivered within the greater San Francisco Bay Area.
Shipping is possible, we'll have to check pricing.

I checked LG's website, which said this is a newer build, not on the recall list.

RESU10H | LG Home Battery

The RESU10H is part of the high voltage RESU range. Using state-of-the-art lithium-ion battery technology, the RESU10H will be there to store energy from your solar panels or the grid during the day. The battery powers your home during the evening, during power outages, when the sun is not...

www.lghomebattery.com.au

Looks just like the one I have hanging here:

https://sunwatts.com/content/manual/LG-Chem-Battery-Installation-Manual-RESU10H-R-Ver2-0.pdf

Comes in original crate.
Missing manual (download above) and mounting bracket. Couple pieces of unistrut with...

• Hedges
• Replies: 0
• Forum: Batteries for Sale

 

[dougbert]

he would like the backup during grid down feature, yes

his installer left the business, now he has no installer configurator. That is why I do DIY - for the control