Ross Mitchell

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@MiniLuv-1984 7 күн бұрын

Nice one. I've made front panels like this manually out of aluminium composite panel - easier to work with - but yes, a lot of time.

@DIYSolarFarming 17 күн бұрын

Nice Ross! Love seeing your clean professional builds, you should be getting thousands of views on these videos...

@adairjanney7109 19 күн бұрын

LTO is too expensive still, batteryhookup has an ok deal for sets of 6 but not that good of a deal

@sjdtmv 19 күн бұрын

Price is a big problem compared to lifepo4, but they do handle a better sub zero temp range if you can"t keep them from sub zero temps

@DIYSolarFarming 21 күн бұрын

Very nice clean professional job!

@SystemsPlanet 21 күн бұрын

How can you conect 6 batteries to the same metal plate and still wire them in series?

@sjdtmv 21 күн бұрын

Each metal plates are there own busbar, The first build awhile ago kzbin.info/aero/PLyDHDpmesxPUPPzuI_waxTE0gdanJUhja

@SystemsPlanet 21 күн бұрын

What BMS? Balance current? Does anyone sell an off-the-shelf BMS with over and under current cutoff? That's a ton of work. Thanks for sharing.

@sjdtmv 21 күн бұрын

I am using a new JK BMS type JK-B2A24S15P that has setting to change to LTO, these will do 2A active balance, from 8S to S24 strings, and 150a Continuous current with peak at 300A, I do have a liking the JK BMS compared to Daly

@SystemsPlanet 21 күн бұрын

@sjdtmv did you have to charge and discarge each cell invidually to measure its capacity? That is a LOT of work.

@sjdtmv 21 күн бұрын

@@SystemsPlanet Yes that is what happened, test each cell, then match capacity in grouping sets of 3 cells

@CNPlannanoenergy 21 күн бұрын

Hello Ross Mitchell，My Name IS LUOXIN,I am from Plannano Energy, our company mainly produces LTO Battery 1.5Ah,10Ah,12Ah, 20Ah,24Ah,30Ah,35Ah,40Ah,45Ah

@OffGridGarageAustralia Ай бұрын

Are these M8 rods for your compression? If so, you need to apply 2.35Nm per screw to achieve the required 300kgf for the cell compression. 4Nm per M8 rod would be around 510kgf! Very nice boxes, Ross!

@sjdtmv Ай бұрын

Hi Andy, they are a M10 thread for compression, ( stranger cheaper to buy 3 meter lengths then shorter lengths a bunnings? which is a different thread helex angle to a M8, I am using nyloc nuts that gives me a drag force before the tension starts, 5Nm it is only a start point for tension, what I should be doing this using plain nut for tension backed up by a another pain or nyloc, I will look into that

@OffGridGarageAustralia Ай бұрын

@@sjdtmv if it is M10, the necessary torque is even lower. You don't want to overcompress the cells which is quickly done with these sizes of rods and bolts.

@tonyadamson2610 Ай бұрын

" Can only get what you can get from the local Bunnings store" ☺ Putting in some good work there Rosco, Despite the limited choices, Hehehehe!

@sjdtmv Ай бұрын

Thanks Tony

@ItatianaMelo Ай бұрын

😂😂😂❤❤

@DIYSolarFarming 2 ай бұрын

Good fab work 👌

@mostafaalbag4634 2 ай бұрын

Could we use it as a headunit?

@jamesmonahanmusic 3 ай бұрын

Holy-smoke, what a wonderful performance. 😊

@sjdtmv 3 ай бұрын

Yes It was a beautiful song

@CoryRobson 3 ай бұрын

NIce and clean setup, I have done very similar but for my cells they are large vertical banks. ill send a pic. I have 3d printed tops and bottoms and 6mm bakelite sandwiched between cells. i also am running the version 14 hardware and have also in the last three days updated to 14.20. always telling me the batt is at 100% soc with cells though at 3.2v per cell average. care to share your settings pls

@jns-n7e 3 ай бұрын

Can you explain how and what data you pull from inverter thru esp8266?

@sjdtmv 3 ай бұрын

I used a made up device that I got from GitHub. github.com/softwarecrash/Solar2MQTT?tab=readme-ov-file

@shaun5552 3 ай бұрын

Manufactured by the now defunct Derby Products in Hobart Tasmania for the record. Used to be a lot of these around in Tasmania, though the 2kW model was by far the most common. Yes they're heavy. I have some definite memories of relocating 2kW units full (with the bricks still inside) and it's somewhat strenuous work yes. Those weren't designed for easy dismantling, only the larger sizes were.

@sjdtmv 3 ай бұрын

This 5.44kw has approx 200kgs of what seems like cast iron blocks, yes no easy job to move, this one will have 4 wheels rated at 150kg each attached when finished

@jamesdcuk 3 ай бұрын

Interesting idea but I don’t think that you’ll get very good results because of the low efficiency and limited winter solar production. We warm the house with air to air heat pumps during the day time which are also quite cheap to buy and the house retains the heat to some extent once it gets darker. The air to air heat pumps have a cop of 3, or sometimes double that if it’s mild outside (above 10c). I warmed out our 45m squared room from 16c to 22c for 6 hours today for just 3kwh! We still heat our water with resistance heating though.

@offgridwanabe 3 ай бұрын

Great idea you also need a heat source that is not resistance heating maybe a heat pump.

@JaenEngineering 3 ай бұрын

The output temperature of a heat pump will be no where near high enough. These work by heating the core upto 200°C or higher then slowly releasing it.

@offgridwanabe 3 ай бұрын

@@JaenEngineering heat pump run through a desuperheater will do it at least that is what my heat pump uses to make hot water.

@JaenEngineering 3 ай бұрын

@@offgridwanabe that's fine for 60-70°C hot water and while you might manage to get up close to boiling it's still no where near what's needed for effective solid state heat storage

@offgridwanabe 3 ай бұрын

@@JaenEngineering What is the highest temperature a heat pump can produce? High temperature domestic heat pumps can provide heating up to 80°C, the same as traditional gas boilers. Regular heat pumps tend to reach up to 55°C.

@offgridwanabe 3 ай бұрын

I know you are looking for 500f at least, low voltage nichrome wire will do it with 24 volts

@DIYSolarFarming 3 ай бұрын

Nice Ross! I'm using Bitcoin miners for heat in the winter but of course there's no heat storage but they do generate BTC so I guess that's a form of storage...😆

@gug1970 3 ай бұрын

direct your fans at a large mass/concrete/stone/concrete floor etc.

@DIYSolarFarming 3 ай бұрын

@@gug1970 Hehe That's using your brain! 😂

@logothaironsides2942 3 ай бұрын

They call them storage heaters here in the UK

@forbaldo1 3 ай бұрын

I remember one of these at my friend's house when I was a kid anytime! had it had been on was a bad time to sit on it to hot . a dozen second hand solar panels wiring buy you. completely off grid your establishment costs are fantastic The Game is Afoot . if you are in a clear day cold night area you will have the t-shirt TV room

@bagmus256 3 ай бұрын

Have the same setup, i use solar assistant for mine, solar assistant support both pip11max and jk-bms, and you can interface directly to homeassistant by mqqt.

@unionse7en 4 ай бұрын

I would be doing it this way too, unfortunately these units are not cheap or surplus in the USA. Ok instead I have tested and kiln with basaltic rocks inside.

@MiniLuv-1984 4 ай бұрын

Are you going to go through an mppt controller + inverter or are you going to power the elements directly from solar?

@sjdtmv 4 ай бұрын

I intend to run it from my set of 3 x off grid Inverters

@skoto.power.systems 4 ай бұрын

How nice it is going to be after all is done, I love ❤️ it. Great work done.

@andrewsaywell5240 4 ай бұрын

Ross I noticed over on a DIYBMS forum that you had been playing with LTO cells some time ago. Does LTO still feature in your Battery solutions? If not why not? I ask in that Im considering building a DIYBMS around the 40AH LTO cells for a home battery and if you've been playing with them for years Id like to understand whether they lived up to expectations or not? In fact I think that is what @ndudman8 is asking as well.

@Mr_natenut 4 ай бұрын

Happy independence 🎉 from the electric grid🎉

@DIYSolarFarming 4 ай бұрын

Nice work! Interesting to see how things are done around the world.

@leiratabz 4 ай бұрын

Did you set your battery LIB in inverter?

@sjdtmv 4 ай бұрын

No I haven't set anything, I have found that there is no listings of the setting for each type of MPP Solar battery settings until you change them.

@ndudman8 4 ай бұрын

did you ditch those round cells which had great lifecycles, I've forgotten what they are called. Also that one cell on battery back looks really out of balance, is there a balancer in that battery?

@sjdtmv 4 ай бұрын

I still have my LTO bank, but at the moment I haven't gotten back to playing with it, the BMS in these 3 coloured 48v banks are a JK BMS 2a active balancer, when the cells get close to fully charge the volts move very fast, they are still within about 40mV, they never get close to 3.65v, I am collecting data on the MPP solar inverters by MQTT using some hardware and software from a GitHub site github.com/softwarecrash/Solar2MQTT

@ndudman8 4 ай бұрын

I have something simular with mpp 8k max's only 2 so far but planned for 3 eventually. Are you using solar assistant ? If you do then you can just use 2 usb cables into your pi and get all the data from the invertors, which can then be reshared via mqtt and used in homeassistant etc. I'm on grid, so use that as back up.

@chrisnixon2495 4 ай бұрын

Amazing Ross!

@sjdtmv 4 ай бұрын

Thanks Chris

@DIYSolarFarming 4 ай бұрын

Nice work! Can't wait to see the finished system.

@sjdtmv 4 ай бұрын

Thank you, yes it's starting to take shape

@DIYSolarFarming 4 ай бұрын

Nice work Ross! Are you going to set up a micro grid so you can use the grid tie inverters? Will those MPP Solar Inverters do AC coupling? Subscribed

@sjdtmv 4 ай бұрын

I am totally doing away with grid connected inverters and the MPP can be setup for 3phase (one per phase) or as one large single phase, I am looking at a 3 phase setup, the PV inputs of the grid connect Inverter will go directly into the MPP inverter's PV input as they can take up to 500V PV inputs

@offgriddreaming5403 4 ай бұрын

Well done 👏

@pascalbudin2983 4 ай бұрын

Good evening, Thank you for all the videos and all these explanations. I have a problem with the JK BMS connected with a Growatt hybrid inverter and a 16S Lifepo4 battery, the SOC drops from 60% or 50% to 1% in less than a minute. The batteries seem correct to me. How can I solve this problem. Thank you for your feedback. Pascal

@sjdtmv 4 ай бұрын

I have since installed a Victron SmartShunt to track the SOC of my batteries

@pascalbudin2983 4 ай бұрын

@@sjdtmv merci de votre retour

@andrewwhittaker6622 4 ай бұрын

Good work mate. I went OG 14yrs ago nothing that flash or fancy and built 1 bit at a time as money permitted but it runs all 240v domestic gear fine Hardly ever need a gen set But you have to love a hobby that saves you money Cheers

@sjdtmv 4 ай бұрын

Thanks Andrew. but I found out only yesterday that the meter will be still billed to me on a daily rate of $1.80 while I have this disconnected meter in my box, I have to apply for a Electricity meter abolishment through a level 2 electrician he will return it to the electricity distributer which is Essential Energy so it no longer in there system map as a connection

@andrewwhittaker6622 4 ай бұрын

Yeah they dont miss you the buggers At one stage the Gov was looking at charging OG people if power lines ran past their properties I'm still watching that space mate

@colinclenton7693 5 ай бұрын

Well I'll be buggered. It would have been GOOD to see the train actually being loaded. Just like the caption said.

@sjdtmv 5 ай бұрын

The train carriages are being loaded, it travels very so slow, if you watch closely you will see it moving

@gordonmann416 5 ай бұрын

Is Col Hayden sending teams over the west, or are you just being scottish on the shirts??? :)

@sjdtmv 5 ай бұрын

@@gordonmann416 Col has got some guys here

@gordonmann416 5 ай бұрын

@@sjdtmv I am going to be riding thru nsw in october, hope to catch you at home

@KhurshidsChannel 6 ай бұрын

Beautiful video. The views are awesome. I enjoyed watching it. Thanks for sharing. subd & 👍2

@adrianabad9823 6 ай бұрын

Pity gold is ruining the land of such an small island

@tonyadamson2610 6 ай бұрын

Geez Rosco, what a nice spot. Off on a bit of road trip, good stuff.

@pascalbudin2983 6 ай бұрын

Bonsoir Monsieur, cela fait un moment que je vous regarde. J’ai enfin construit ma batterie… Par contre pouvez vous m’aider car je rencontre un problème de connection RJ45 CAN entre la carte bms JK et l’onduleur Growatt SPF5000 ES. Merci de votre retour. Salutations Pascal

@HarryHamsterChannel 7 ай бұрын

For toilet bowling, land, then take off again. Clean the lens or remove the plastic. Keep flying!

@MiniLuv-1984 7 ай бұрын

Are you planning to mount the inverter(s) below the busbars too?

@sjdtmv 7 ай бұрын

At this stage above

@atnstn 7 ай бұрын

Good man. Good idea.

@MiniLuv-1984 7 ай бұрын

Very good! I think the heat shrink on the bars may be overkill from an insulation point of view (I'm presuming a 48V system). Practically and aesthetically though it looks very professional. What currents are you expecting the 50x10mm bars to conduct? I was thinking along the same lines...Aluminium much cheaper than copper.

@sjdtmv 7 ай бұрын

Heat shrink was to make sure that Pos and Neg bus bars are defined as Red and Black, something that you don't want crossed up, I am expecting up to 250 amps, that is based on using a 11kw inverter (still in the box) at max current, it may never get that high.

@MiniLuv-1984 7 ай бұрын

@@sjdtmv Yes for the heat shrink for clear unambiguous id. I will do the same. - I was originally going to colour code only the ends and the middle but following your lead is a much better approach. You should have minimal voltage drop with that size busbar. What are your thoughts on the terminal/busbar interface? Just torquing the bolts though the busbar and terminal is sufficient or are you thinking of "roughing" the mating surfaces first?

@sjdtmv 7 ай бұрын

@@MiniLuv-1984 The threaded M8 holes have been cleaned with a brake cleaner and the mounting surfaces has been cleaned and polished with Scotch-Brite as to leave no residue

@tonyadamson2610 7 ай бұрын

Looking Good there Rosco, nice to see you so busy and doing some some good work, keep it up.

@sjdtmv 7 ай бұрын

Might be seeing you at Roy, just got a text asking about next one

@reductor_ 7 ай бұрын

definitely highlights how much solar there is, would be interesting to see if a thermal camera attached to it would show faulty panels from that high

@tonyfrewin4822 8 ай бұрын

Nice job, just wondering why the 4 pole mcb. Don’t worry, I’ve just read the other comments. I’m only just finding out about bidirectional MCBs here in UK. Have they been a thing over there very long or is OZ also just getting into them. Cheers.

@sjdtmv 8 ай бұрын

Thanks, I have never come across them being use in DIY solar on KZbin yet.

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