Hey john, have you had issues or heard of people having issues with sunny islands new update messing up the communication adapter with midnite charger?

Very useful

Hi John great video! I have the same island, could you please tell me how the generator connects inside the island and also will the generator charge my batteries at the same time coming through the island? many thanks paul.

Replace all that with EG4 6000 OR 12000

My brain had a wank just by watching the shaking video

John - do you have any of these units left?

Are you available to help on some troubleshooting?

Many many thanks from Portugal!

great video as usual! thank you.

BatSOC is all over the place and got an overtemp shutdown yesterday testing the RV will plugged into a single 510ah. It was working just fine with the RV and within 15 minutes the SMA threw up an alert. Wondering if the battery sensor(s) are going bad between the battery, the Mid CC and the SMA... started the test out with 50.5v on the battery with the panels supplying 700+ watts coming in. I'll try the test again today when the sun comes up.

Thank you for posting this video, John! Deanna and I trying to test the RV with our single 510ah and had the DC Solar Trailer shut down yesterday - so we are still working out the kinks. I think our battery temperature sensors may be going bad - not sure just yet.

Hey brother, can you help me with a Sunny Island inverter connected to e flex 5.4 batteries? It's a new install but it has error codes and it turns off. Fortress helped with a little troubleshooting. Technition hasn't followed up for a long while.

Thanks 👍

Check continuity between your positive and negative inputs on charge controller, if continuity is present it means your mosfets need replaced inside the midnite c.c.

Thanks i highly recommend swapping the panels with canadian solar bifacial panels model number beginning with cs3u are 39" wide for direct swap 😉also changing the midnite charge controller with the eg4 500v c.c.

Mine used to say operation generator now it says operation mmc? Any idea why the generator selection disappeared?

does anyone know where to buy replacement battery cells ? I have 2 that are bad but the trailer still works for now.

It's called AC coupling for those wanting to research more information

you always have great videos!

John read your comments my brother. We love you here. I love seeing what other people do with their dc trailers. I inherited two that were not taken care of. Went lithium in one with a second PV array and high voltage charger and the other I wire lead acids up I got from a UPS center for the airport about 45kw or so. I installed additional cabinet ventilation as they were overheating and maxed out the midnights with four additional panels each trailer. I use a time controller to charge them from grid between 1-4am when it’s low sun. About 12 kw in solar total With the additional array. I did have to run a ground back to the shunt from the 500v charge controller because it wasn’t seeing the amps flowing in. They are solid but all in all I am looking at going high voltage dc across the board in pv and dc storage, I like the solis maybe two 12ks or a Sandi 25kw. A small industrial inverter may be better than a pair of residential inverters.

My generator starts and does the same. It won't kick on when batteries are low and is not charging the batteries. Any suggestions?

Good thing to know about the generator and SMA! I just found out yesterday that the Kubota output was set at 48A charge instead of 100A at the Master SMA. I have been wondering why the output of the Kubota was on at 1.3kw (=/-) for the test runs to charge the single 48v battery that has survived. So many different setting to go through before this trailer is functioning as close to 100% as is possible.

for 'SUNNY ISLAND' off grid / battery inverter

Can you do a video to show how to change so I charge from 240 from 110 on my generator. We switched mine I need to change it back. Thank you

Thanks a lot 🙏 I notice on my trailer only 1 battery connection is made to the master inverter but the anderson style plug is empty for the slave inverter. Is this correct for my setup, 8x 6v lead acid batteries in series? Or should I connect the batteries also to the slave inverter battery input? Or is that is I setup a seperate battery bank?

Question don't know if you can help but I have a warning slv2loss. Do you know how to fix that? I have a master and slave 1. So I am at a loss.. Thank you.

Red and black are the 2 hot wires from the 240v receptacles, not positive negative

One of those plugs is the generator input to the inverters and the 2 plugs are the outputs from the ac load panel powered from the inverters as the 2 hots so it does not matter that those plugs don't match eachother 🤔

Thanks

John - thanks for reminding us that there is a 1hour run time for using a little power, charging battery banks and just cycling the generator and fuel recirculation. I will keep that in mind!

Hey John, I just seen your video right now. I was wondering the same thing about the wind turbines let me know how they did because where I bought my property. It’s windy pretty much year-round. I would like to know how it worked for you.

I used a curved pick to remove those covers... some of them just pop off - others had never been removed. That was how I figured out the "battery maintenance" was almost none existent before we bought our trailer.

You are amazing, John! Thank you for stepping us through the electrical!

Well - we are are down to one and the bad bank needs to be removed. I am bummed but looking for a replacement.

John - I just reviewed the Midnite Solar panel calculator and it says we are only able to use 4 (390watt QCell) panels per string. I thought you were able to get 3 strings of five for your DC Solar Trailer? We would be at a little over 3,000watts at peak but I am trying to get the most out of the DC SOLAR Trailer that we are able to. How many watts are you getting from your 3 strings of panels? Thanks for any insight!

1,155 x 24hr Days - a little over 3 years run time on the inverters - I will have to take a look at ours' and see what it comes out to.

John -greatly appreciate you taking the time to make this video. Found out the Battery Current Sensor was NONE and was able to switch it to the 50/500. Did you ever find out if the 500 referenced the Ah combined on the Battery Bank? I will raise it to 1020Ah - the batteries are 510Ah each.

Does the equalization actually give you more access to the capacity of the batteries?

Hey John Where are you located? I have 2 solar trailers I’m wanting to upgrade panels to Canadian 385 by facial. Would this work? Is it as simple as plug and play. I just don’t have too much experience and you seem to know your stuff. I’m also interested in upgrading batteries. They seem weak can only run a 750 watt heater for about 8-10 hours before the battery’s hit 25% from 100% Would you work on these trailers for a hourly charge if I sent them to you?

Neat, never knew the name of those connectors. TIL

Hi John great video I have the same trailers also have the sunny boy , my question to you is if I want to connect all that power to my grid did you just simply disconnect the Generation and ran a connection to the RV plug from the house grid? So basically it is Grid tie to any plug from my home? Hope this question make sense

I will be checking this out this morning! I will also be adding the battery charger for the battery in the Kubota! Thank you!!

what state of charge should the batteries be at when starting this procedure?

John - we were able to find a used unit in California yesterday and we picked it up! I have to run through the systems and ensure the battery SOC. I will be reviewing all of your videos again and again to become more familiar with the trailer. The unit we purchased has the masts and I still would love to try the style wind turbines you tested on your unit - do you have a link to those turbines? Thanks so much!

you could also put a panel directly to it?

thanks for these videos John, I bought a DC trailer about two months ago and I'm learning a lot about its operation through your videos, and threw just playing with it. Is setting the inverter low voltage cut off in inverter settings? It was like one option above where you were going

John - I am subscribed to you (ALL/videos) and for some reason the "bell" symbol has a slash through it? Are the notifications turned off for me to your channel? I have clicked on "ALL" several times but the "bell" continues to have a slash mark through it....hmmm?!

Very interested in using these style wind turbines - too bad you didn't get positive results from all you hard work installing these on your trailer!

I wonder if 3M has a type of spray for these panel backside?

John - you are a wealth of knowledge in regard to these trailers! Most of us wouldn't have even noticed. We need to install a regular 50AMP cord from the D Solar Trailer to our 50AMP Service connection on our RV.