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All my banks have a 1A balancer, turn on every 3 months as long as needed, usually 3 days, when in 5 days, something is pretty wrong, i think But some folks have stated those envision are pretty time resistant. I think i will give it a go, again you get what you pay for?

So it is clever to buy then or stick with EVE?

to80% of state of charge, if you are using 100% then you will have no more then 4000 left. EVE also has several species of cells, their not only for automotive industrie.

I have been lurking on them, great price. But looking on some numbers: envision---> 70%SOC gives a 6000cyles. EVE B grade -->80%SOC gives a 8000 cycles. So cycle life is less, what about self life? If even doing 1 cycle a day it would still be 16 years for envision and 21 years for eve. how...

Long life? 46 to 56V You will not see the end of them nor your children. Now they will see 70%soh left. In the meantime, you expand. In 20 years from now, there will be a other type of battery or chemistry, your kids will not even want your "old/obsolete" lifepo4. Not even 500kwh 70%soh...

Also negotiate with the seller if they are 80% under advertisement--->free return. Dont buy waste.

Thanks for all your input, it is really appreciated, just like every one elses input..... Long way from being done the correct way. But with you guys....i will have a dream system...learn me as much as you can so i can hopefully help others..... Again sorry for my english, it is not my native...

https://www.omnicalculator.com/physics/dc-wire-size I used this one for all my wires. For 50V and 100A it spits out 26,7mm2 I am way not close to capacitor capacity. So i really hope you can explain this one to me, cous i dont think i understand it, sorry. I will do that! I just did all with...

Agree... Short of storage....need more cells... Short of harvest....need more pv Oke i have easy talking, i have room enough, for batts and pv(130m2 can be covered in pv, and more if must) so i can do it with "old" panels. Panels from 25 years ago! give an average if they are good of 120wp per...

Oke good point! But, the ever enoying but...we have some clouds in the morning...that array does nothing...really nothing Oke we have clouds in the afternoon....that other array does nothing..... But those two arrays(up til now!) can keep us going after! expansion. But there is a problem: The...

Andy...yes also a good one. i did not know he had a website, i will check it out, thanks.

There is a link in this thread somewhere that leads to a page written by will prose. it is a good read! Go with that one on youtube university and make up your own mind.... Speaking for myself incl after what i read and learned here....Will is on a good spot... BUT there are to many differents...

Bingo, and this is why my house is idly for this....we come home and charge the ev's and start electric cooking...... The best roof is at 14:00 to 18:00. In summer time 15:00 to 19:00 This is also the roof i have the most room to place panels. Considering the time when we are stil at work and...

I have fuses on all levels. except individual cell level as you do with second hand li ion cells. Thanks for your explanations, makes al lot clear. But my inverter is just a stupid thing, min 42v max 58v, in that range he operates.... So i use the bmses to cut off the power under 48v, when the...

The panels on the south west roof: 6* 100wp 34,4v and 2.9A connected in 70v * 3 The panels on the east south roof are the same. I am planning to put them all in one controller. The reason for this is that from the local goverment i could not put all the panels on my south west roof(monumental...

I had a feeling, but wanted to make sure:giggle:

This chart i toke from this forum a couple of months ago was my guiding line: 16 cellen SOC Cell V SOC 48V setup 100.00% 3650 100.00% 58400 99.50% 3450 99.50% 55200 99.00% 3375 99.00% 54000 90.00% 3350 90.00% 53600 53600 80.00% 3325 80.00% 53200 70.00%...

My uncle has his own scrap/old metal yard. this is what he had in 25mm2, but agree it should have been red and blue (and black between bms and batt.)

Class t was crossing my mind aswel, this one was advised to me from a store around here(no ali junk), more people tend to use this one according to them. Agree, the arc is something to take in serious consideration. I am waiting on some new breakers 125A fast dc, so i can switch it of and on...

I dont think i get this one? Is it a wonder that i get with settings 7kwh or Should i get way more with those settings?

My busbars are 300mm2 (*1,2A 360A rated) The fuse per pack is 100A 48v dc rated. The inverter has a 300A 48v dc rated fuse. Those green yellow cables are 25mm2 So far so good? The cables on the inverter are 3 times 16mm2, yes those are way to thin, when the inverter is going in full...

This i understand? But 10% below or 20% below or the other way around? Or 10% below and 10% above? Can you give some advice on high and low? cells? and pack? this is not li ion.....2.8v to 4.2v 14s ....but lifepo4 16s.. Thanks in advance

This is half of my system would be No i dont know how to handle a digital camera...

Having 3 * (16*280Ah) give me 7.7 kwh....in a field test.....7.7kwh....! Wait what...3*16 cells*280ah...must be (48v*280ah=13,4kwh per 16 cells, each)..........times 3....40kwh? minimum So 48 cells must give me ~40-45 kwh???? Three batterys of 48v 280Ah each..... According to my calculations i...

go to ali express and order a wind turbine, put that thing on a regular mppt controller. They dont know if there are clouds(pv) or a wind silence? I jusut about to order 2000w(4x500w) of wind turbine, and i already ordered 2x 100v20a solar chargers extra for 48v. Hope this was helpfull, with...

Sorry your link is broken, but here is a other one... http://en.thundersky-winston.com/?cnxdc/301.html I am going to drop by and buy 16 of them.... Hey what is that sound?...shoot that is my wake up call :eek: Considering there prices it will cost around 10,500 euro? Educated guess. Up to...

Dat gaat er nooit komen, dan loopt onze roverheid teveel geld mis. Als het bekend gaat worden op grote schaal dat je als particulier veel meer geld overhoud als je het in accu's stop worden ze per direct voor de particulier verboden. Er zitten plannen in de pijpleiding om per wijk een groot...

Nee je mag niet zomaar stroom terug leveren, kan zelfs dood door schuld worden. Stel nu er springt ergens een stop uit of een storing of what ever. Een elektromonteur gaat naar het verdeel station toe van jouw straat en meet 0v op de kabels als het bewolkt is, hij gaat aan de slag en de zon...

Als je energie opwekt ben je een ondernemer voor de wet. Je kan ook niets voor niets je btw terug vragen. Gebruik je 10kwh per dag moet je al 30kwh per dag leveren om mogelijk gelijk te spelen. Overdag wek je op je krijgt 9 centen per geleverde kwh, maar savonds kom je thuis en je koopt een kwh...

O ja de nederlandse vrijheid...ik loop al een tijdje mee, er is alleen vrijheidheid als je betalen wilt en niets besparen...mond houden pv en ess aanleggen en dan geld overhouden, houtkachel idem biodiesel idem ect...de roverheid...leuker kunnen we het niet maken...mond houden en besparen...

Jammer dat we zo ver uit elkaar wonen. En tja het is niet echt verwonderlijk dat de dealers niet behulpzaam zijn, immer hun eigen monteurs moeten ook wat te doen hebben.

Sorry, no my friend. it is just the other way around... They keep pumping A's into that poor cell...swallow or choke...a fuse prevents both.. They want to balance...hence a self discharger...more dendrite forming, hence higher ir henche heating up... Now this circle you will prevent with propper...

My opinion about a "runaway": There are other chemestries that get some unbalance and will cause a thermal runaway(famous red sanyo's 18650) Short circuit due to other causes: a pack that is NOT properly balanced. a not matching string, 15s 420Ah cells and one 105Ah cell. short...

Dendrite is occurring/building up with every cycle. The IR is also building up. You will notice this in time. If your string is original a 100Ah, most of us with take it out before it is getting dangerous, meaning: I don't think someone wants to prolong the "suffering" of the string when it is...

I read some very interesting arguments against what ever problem a cell can have... Yes we can put pressure sensors heating sensors bms ect to protect a string and what ever system that we can think of... But arent we forgetting the most important thing? Cell level fuse? The fuse will blow when...