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If your batteries are full then there is no place for the electricity to go (unless there are other loads attached) so YES, a full battery effects panel output.

I would feel more comfortable knowing exactly what model of panels you have or seeing a picture of the electrical specs sticker on the back of one of the panels but if your VOC = 36.0V and your ISC = 9.0V and if you have the Growatt 10kW Grid-Tie Inverter | MIN10000TL-XH-US then you have 4 PV...

It's weird. it will work flawlessly for weeks or even a few months at a time and then just out of the blue, for no reason I can figure out, it will just stop charging. One time I did not notice it right away and it was down for several days (before I noticed it) and then the next morning (when...

According to most sources, heating water accounts for around 20 percent of your utility bill. That makes it the second-biggest energy expense in the home (behind heating and cooling). Given that, it deserves some serious consideration, especially in your case where you are building your own...

I know that loading one side (HOT1) with the Neutral, or the other side (HOT2) with the Neutral will give 120V. The manual calls that out as one of the wiring options and I have tested it. What I am not sure of is using both legs (simultaneously) because the manual specifically states using...

I threaded my 1/4" thick copper bus bars 1/4-28 and it works fine. I used brass hex bolts and could probably twist the head off the bolt before the copper threads gave. I forget the torque spec I used (50 in-lbs I think) but it was very tight.

There are different types of systems. Look into a Drain Back System. Like this design. https://solarconsultants.com/drainbackrheemstecaman/ If you have enough solar to produce PV to heat your water in winter, there should be enough for this system to work even better.

Anyone from Texas should understand this phrase. Tell them to "COME AND TAKE IT!"

Mine hardly notices when my 1 HP well pump or Air Compressor starts. Even less with the miter saw. It also starts a 4 TON AC Unit with only a minor dim of the lights (even when my other 2 ton unit is already running).

I have that exact unit and it has been working well for a few years. It is even mounted in my hot attic (125F+) in the summers and so far it's on it 3rd or 4th Summer and still working. Regarding building things, I love to build things but do not understand electrical/electronics as well as...

I have also hooked up a Pi and allowed Pierre (Solar Assistant) to capture data from my Growatt 12k and they are working on seeing what they can do with that. Hopefully in a few weeks Solar Assistant will be able to offer support for the Growatt 12k also.

Conversations are private messages. You can find them in the "envelope" ICON at the top of the page b/t your screen name and the notification bell.

I would just get one of my copper gun barrel brushes (of the appropriate size), chuck it up in my cordless drill and clean the inside of them. 2-3 seconds on each one and they will be ready to go. To make it easier you could line then up in your vise to hold them steady.

Ahh thanks, when I searched "Valparaiso" in Duck Duck Go it came up as a place in Chile and I thought that could not be right. I would really like to buy it but Indiana is way too far for me to drive. Be like someone asking me where I am located and me answering "Just outside Paris" (and not...

The Growatt 12KW Split Phase Off Grid Inverter | SPF 12000KT DVM-US in NON-Stackable. You cannot connect two of these unit together.

I have this unit and have used the heck out of it...

I grown to HATE Lead-Acid batteryies over the past few years and I am experimenting with building 12V auto (lawnmower, ATV, generator, gate opener, etc.) batteries with my own 3D printed battery boxes. For the lawnmower and ATV batteries I am using well matched (top balanced) cells with cheap...

When talking about solar and well water pumping there is nothing better IMO (and experience) than the SQFlex series from Grundfos. https://product-selection.grundfos.com/us/products/sqflex?tab=models They have many models for different depths of wells and they seamlessly run off of 90-240VAC or...

Yes, you have to shut everything down and restart. One time when it did it a few months ago, the shutdown/restart caused all of my settings to go back to the factory settings and I did not realize it until my BMS's starting shutting down my packs, protecting them from overcharge. I then had to...

I would like to report that I was able to successfully re-flash my inverter and get it working again. The short answer is trying to flash it with a Windows 10 computer failed and when I switched back to my Windows 7 laptop and it worked fine. I was even able to successfully revive an Inverter...

I would like to report that I was able to successfully re-flash my Growatt 12k and get it working again. The short answer is trying to flash it with a Windows 10 computer failed and ended up bricking the unit. When I switched back to my Windows 7 laptop and it worked fine. I was even able to...

Thank you! That is the answer I was hoping for from someone who already owned and installed one of these.

Some of us are having problems with the PV not being recognized in the mornings (randomly) and others have suggested that updating to the latest firmware will fix that. Speaking of that, does anyone have the latest Firmware update file for the 12k DVM MPV?

The Firmware update package you are requesting (and an outline of how to successfully install it) is in this post. https://diysolarforum.com/threads/growatt-12k-latest-firmware.53805/page-3#post-817434 Unfortunately, it did not correct the problem of the solar randomly not showing up. Less...

No PV Charging. The voltage is there but the inverter does not appear to see it. There are no panel icons on the screen and the inverter will just not switch into charge mode. There are no fault codes.

Charge Controller or Solar Charge Controller (SCC) - Is a component (or part of your All In One unit) that takes the input from your solar panels and controls and regulates the voltage and current to charge your batteries.

Yes, but the OP already Top Balanced his batteries and was just having a problem with the voltage readout on his BMS. The problem resolved when he switched BMS's. There is no indication that he did anything to get them unbalanced so I would certainly give them a try to see how well they are...

More information needed. What is the Open-Circuit Voltage (VOC) and Short-Circuit Current (ISC) of your panels. Also, I do not see how you can get more than 15A from a 3S 250W panel. I would expect the ISC on a 250W panel to be somewhere b/t 8.5 and 9 Amps. Remember when you put panels in...

The firmware install (according to the screen) made ZERO progress. The start command just kept scrolling but no progress was seen in any of the progress bars or widows. Apparently it did something since it was working before and now it's not but nothing showed up in the window. As for...

Heating pads come in lots of shapes and sizes and I find it useful to use low wattage ones to make sure they do not get too hot. Here are a few examples. https://www.amazon.com/gp/product/B0BLW7BTH1/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1...