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Amazon managed to send the correct 16S version of the 100 Balance 1 amp active balancer. And today, I got my extra connectors to make up a "Y" harness. I tested it all by letting it finish balancing my E-Bike batteries. You can set them to balance less than the number of cells they come wired...

I have a 4,800 watt array with Enphase micro inverters in Southern California. These are 5 year old single sided panels. In early May, on a clear day, I start to get usable power at 6:15 am. It tops 500 watts before 7:45 am. Due to my panels being turned 20 degree west, my "Solar Noon" comes at...

Back on Sunday, May 12th, I left it exporting close to 3,000 watts, and sort of forgot about it until 6 pm, oops. Here is what the XW battery summary looked like. While the sun was still shining, the battery was charging nicely. But from 4 pm to 5 pm the sun fell enough that the demand from the...

After sun down, I checked my final numbers. The 2,000 watts of DC panels produced a solid 11.38 KWHs. That is 5.69 sun hours. Not too bad at all. The Victron is doing way better than I ever saw from the BougeRV charge controller. But the Enphase system still did better. It pulled 28.5 KWHs from...

I ordered a 16S 1amp smart active "100 Balance" cell balancer. The package arrived today, but they sent me just a 10S version. Oops. The new one should be coming on Tuesday, and then I have to send this one back, assuming they get the order right the next time. If they mess up again, I may just...

Correct. At this point, SCE knows I have solar, but I have not officially told them I have batteries. But the fact I am "exporting" 20 watts at 1 am looks a bit fishy. They have never said anything, but for 6 months, they added an offset so it was showing as 20 watts of import instead of export...

I am on an NEM 2.0 deal with SCE. On my contract it only says peak export of 16 amps and maximum 900 KWHs of export per month. While I am now close to the maximum current, I am well short of the energy limit. It looks like I might be able to get to 26 KWHs per day, so for 30 days, that would hit...

I was surprised to see it, but So Cal Edison posted the Saturday usage data on Sunday morning. Here it is. It fell just a tick short of my maximum export. I am doing it a little different today. I already started it exporting before noon. The battery voltage is above 57 volts, so I just set...

Okay... It's been more like 3 hours, but I wanted to catch the end of it. I'll start with the Enphase production for the day. That day is not over, but the energy is falling at 5:50 pm __ The power dips after noon were from a band of clouds that moved through. Overall, production is still a bit...

I am doing a little experiment today. Th XW-Pro hit it's full charge level 56.5 volts at just 10:20 AM and it is very sunny, with just a few passing clouds. The DC system was getting close to hitting absorb after just 2 more hours at 12:20. With the strong sun, the Enphase system is cranking...

The iQ7's are technically in the shade about 3 inches clear under the panels, but they still reported hitting 140F last summer. That seems to be the temp where they start to power limit a little. Watching the temp graph, it flat lined as the power dipped about 10-15 watts off on each panel. 140F...

How many watts of panels are on your 6 KW AC coupled inverter? My system is only 4.8 KW of panels on 3.9 KW worth of Enphase iQ7 inverters. With some haze in the air and hot panels, it didn't quite go into clipping today, maxing out at just 3.7 KW out of the microinverters, far below your 6 KW...

All I can say is "WOW!" The sun is out in force, but the temps are still reasonable, so I am not running any A/C yet. My Enphase system is producing just shy of 30 KWHs again. It would do more if the panels were not getting so hot and there is a bit of settled dust/pollen on them. Add in the DC...

Voltage drop is a killer in a 12 volt system, so I would go with the #2 to be on the safe side. I am using #2 for my 100 amp connections in my 48 volt system. And where my 2 battery banks join, it steps up to 2/0 to the inverter. A 0.6 volt drop at 12 volts is 5% loss. On a 48 volt system, the...

I am still just trying to understand exactly what the goal is for the system. Do you just want to produce enough free off grid power for everyone, or will this be a "for profit" power generating system for the small community? With the amount of PV solar you mentioned at the beginning, running...

While looking at the Enphase logs with my breaker trip, I saw something I neve did before. This is the very end of the logs after grid was restored and everything was going back to normal. All 16 inverters reported all of the clear messages for AC frequency high and low, Grid Instability etc...

Well.... I made a little mistake. The battery was fully charged, and the Enphase Solar is making plenty of power to run the house, so it was a good time to do some system adjustments. I was going to change out the breaker from the XW-Pro to the backup loads panel. After doing a little math, I...

I built up my battery bank from Chevy Bolt battery modules. The process is a bit different, but does share a lot of the same issues. One big difference, the Bolt cells are pouch style with tabs spot welded to the bus bars. Building your battery into 4 separate 3P7S batteries will give you some...

The communication can be a nice feature, but it is not required in many cases. The data typically consists of the calculated State of Charge (SoC), the total BMS current and voltage, the minimum and maximum single cell voltages, temperatures, and the maximum charge and discharge current the BMS...

Saturday was all overcast, so I knew I would not lose much energy harvest if I shut down the DC panels for a bit, and my brother was also off work and bored. So he came over and we spent a few hours cleaning up the wiring on the DC system and got it all in conduit. It's not perfect yet as I have...

@sunshine_eggo is correct. The master inverter that is creating the grid needs to be as powerful as all of the grid tied inverters added up. How much power does each tiny house need? Maybe make it a split hybrid system. So we have 12 little houses and each one has 6 KW of solar panels on the...

You need to measure the voltage back at your main panel both with and without the full sun hitting the solar panels. What is your proper grid voltage there? Most inverters will shut down if it is more than 10% high. With just the one inverter running, you don't have a problem, but when the...

This does not sound too bad. 6 amps instead of 8 is 75% which is about what I get on average days with reasonable sun. So this points to the batteries being in OVP. The LFP cells in the SOK battery might be a little out of balance, which can cause it to go into a single cell over voltage even...

April has been very good and now May is starting even better. I ALMOST made 30 KWHs on just the Enphase system yesterday. My best ever was almost 32 KWHs in a single day, so I am almost there even with a little more evening shade from the growing palm trees. From Jan - Feb I had to import 52...

The one box solutions do have a small advantage in that a single processor is seeing the currents and controlling things. In your Victron system as well as my Schneider/Victron/Enphase mix up, you have completely separate devices each doing a job. And a controller watching the power flow and...

Can't say anything about the JBD, but my 200 amp JK-BMS is now 4 years old and has been flawless, except for one balance lead connector that failed and caused a shut down. Once I fixed that balance lead, I have not had any issues and it is keeping 360 amp hours of cells all balanced within 0.003...

It almost looks like we had another eclipse today. But no, it was just a band of heavy clouds. The funny thing is, it barely shows in the XW Batt Graph. The main dip in power happened shortly after the XW stopped charging. The DC system was still charging, and you cann see the reduced charge...

SCE posted the data from yesterday. My estimate was very close. Here is the graph. You can see my only consumption was the 600 watt hours in the 8 pm hour when we tested the EV charging. I easily offset all of it in the 4 pm hour and netting almost 15 KWHs of export still. Obviously, I would...

We did a little experiment today. When my brother got home from work, he brought over his Bolt EV and his Charge Point Level 2 EVSE. I wired up a plug for it and we set it to charge. Only issue is, he didn't have the App setup for the EVSE so it was set to 30 amps. With only my one XW-Pro, I...

The last few days have been excellent production, but I have nowhere to send all the power. The Victron is going into float about 1 pm and throwing away half it's possible production. Here is the battery voltage graph from the XW so far today. It's kind of hot today with intense sun, so I am...

Here is a screen cap of the page I did it as a thumbnail, I think when you click it you will then get full res.

I think you are onto something here. It sure would be nice if the system would log when these actions happen. Then we would know which one caused it. The other thing on this page "Freq-Watt P(f) Droop" that is a bit scary to me is the "Ramp Rate Increment" at 33% per second. I slowed that to...

The additional problem is that you can't tell if/when you have enough solar coming in to switch the Powerwall back on. The AC coupled solar is dead, no matter how much sun there is, until the Powerwall is producing a good local grid for over 5 minutes from the remaining battery power. My...

Sorry for this fairly long post, but I have given my similar situation some thought. The issue here is called "Dark Start" and it is a problem with all AC coupled systems. In my case, I have a Schneider XW-Pro instead of a Powerwall, but it suffers a similar issue. The best way to deal with it...

If you only connected L1 and L2 with no neutral, I would expect the XW-Pro would never qualify the input as good power and it would leave the input contactor open, the neutral connected to the transformer center tap, and it would stay running off grid. And in that case, it would not be able to...