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Hello guys. I was in the same situation a month ago, and after my first top balance discovered that the cells can swell up a lot, for example, this cells use to sit perfectly flat, and this happened after a low C rate charge, a couple of mm of separation: Its not that bad and its between...

Its the portion of the charge graph where the cell voltage changes abruptly in a short time... lower and upper end: And speaking of abstractions, this is the way i visualize it:

Ive made some aluminum racks for my cells, i can put a couple of acrilic sheets on the sides / top, and some LED lighting and they could look pretty interesting: - if you plan on covering the inverters, ill be carefull with the ventilation, they generate a proper amount of heat and if your...

So my 16 x 280AH Lifepo4 cells finally arrived. Now its the time to start building the battery pack's! 24V System for an hybrid inverter LV2424 2 x Battery Pack with 8 Cell each one, connected in series. Daly 200A BMS for each pack. 100A Fuse for each pack. Both packs connected in parallel with...

You guys are going to make Amy rich

Just FYI the manufacturer recomends 40A breaker for AC Input for a single one, and 80A for a parallel conection. Its a little hidden in page 33.

Just wanted to share a bad photo of the system at near 100% PV generation for my array: Ive seen it at around 8.8Kwh, probably could produce more but my load its not big enough ;) - Im at around 1300 - 1400 Kwh /month, with a 10.3Kw PV array (east - west) - System has generated 3.50Mwh...

So this beast finally arrived: (8K LP1 US model) -- At a first glance i really like the quality of materials and the weight of it!. Planning on putting 10.5Kw of panels (26 x 405W), in a east - west configuration. Panels would be around 20 - 30° to E / W. Each MPPT would have 2 strings in...

Yesterday i received my batteries from Xuba. Have a lot of issues in the past wich chinese vendors & bad packaging. Not this time, everything arrived in perfect condition and the packaging was ABUNDANT, very good job from the supplier and i must also thank the members of the Forum that gave...

Just build your own battery company already :)

Yeah im just starting in the BMS world, but i would put the low temperature disconnect in the lowest priority of my list (Thanks to my climate), for me its more important: Being able to active balance the cells with more than a few miliamps. A decent case, preferably with a good heatsink. Good...

Yeah!, make sure all lengths are equal just in case..., also check with a good multimeter the end voltages (Terminal block) comparing with a measurement at the battery connector, to see if they are the same.. As you mention, the cables sometimes are bad.. i have even found some that dont have...

Jeje thanks! Have some tools, the most helpfull its the mitter saw and the bench drill, but you could easily make it with simpler tools, a regular drill, jigsaw and a bunch of nuts! I will upload some blueprints in case its useful for someone in the forum, it has the advantage that makes your...

OH god this has become a complete novel, the photos from @SethRR look nasty, i would be very upset if i received that in my house.... and the CEO answers (And their behavior from the beginning) are a textbook example of how not solve a crisis.

The "Power button" its in reality a swith for the inverter only. My MPP's are the same, if you turn off the inverter the unit will work for a little while if you have AC input connected. I recomend messaging directly to MPP solar support (support at mppsolar.com)... they repply fast and after...

For mobile, its better for the cells to be completely fixed & strapped to avoid any movements. The terminals shouldn't cope with any mechanical load (Only the possible expansion / contraption of cells). Also as Steve mentions, the cables have a big failure point, wich is the lugs itself. If...

You are making me blush!.. thanks ;) So far the setup has been working perfectly.... if you have the time its a good option but involves a couple of days of work. Ive seen some easier to make setups in this forum, and some guy was even talking about selling them.. Maybe someone else can link...

We shuld pay between all of us, an hour of consultation with the EVE engineers! ;)

Thats perfect, i just bought this unit, thanks a lot guys:

Need to wake you up again @Haugen Im doing some numbers to decide either between some pylontech batteries or a DIY one with the Heltec BMS.. same as yourself. Fits of all, what would be the main advantages of the inverter communicating with the battery?. Being able to cut the charge /...

If you setup correctly your charger, and if the other cells are OK, most likely that one puffed cell was not in balance with the others, or had some problem. In any case, if the seller its promoting them as a balanced pack, maybe you can have case and put a claim trough aliexpress. If they give...

Hello Hedges, i think Victron has one: https://www.victronenergy.com.es/accessories/ziehl-voltage-frequency-sensitive-relay-ufr1001e

So the MPP solars are very practical and they work allright, however i see them as a solution for small residential installations, and probably no the best option if you have a bigger place or want higher reliability. So im looking for an all in one unit, but with better build quality, more...

I think Will used to say that when BMS were +400USD and difficult to get (Old videos), nowadays they are cheap and plentiful, so i think he recommends using them now. Either way its better to balance yourself and dont trust the suppliers, the cells usually arrive at the same voltage but that...

Made a lot of progress this week, PV side its already installed, just need to work on the AC side. Also you can appreciate the size difference between the little 2.4kw MPP Solar vs the 8K Deye: Realy liked this ABB enclosure, very high quality and easy to work with:

Well there is a lot of contradictory information about the cell orientation, so im still unsure about the answer. - A lot of resources point to the "Any orientation" advice, however a lot of them refer to cilindrical cells, or batteries asembled with them (Like battleborns), so that doesnt...

Ok!, yeah in my first iteraction i used 1/0 wires, wich they are indeed overkill but as i didnt trust my ability to build and crimp cables, just added a big cable in case my connections weren't properly done. I was thinking in changing them since they dont fit properly in case of the inverter...

I was also thinking that i could have a bad crimp or a loose connection, so better to check it all and kill 2 birds... Altough if that was the case the inverter probably would trow a different code, related with AFCI or simillar. But.... I did a quick check and found the problem... you were...

Thanks for the heads up, that forum its a goldmine for people with a DEYE / Solark / Sunkynk

I use melamine covered plywood, wich makes it fire resistant and its suppose to self-extinguish... but to make it safer i route al cables with PVC channels. The important bit, is that i use a couple of aluminum "U" channels to mount the inverter to the plywood. Having the inverter floating can...