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So with these new batts, and all the other new batts I got minus the 18650 that I've not use yet, since waiting for sid balancers.
Thats going to give me 770ah So 18Kw.
If I can find me a either 200a or 300a 24v bms for these batts I can use it on the slave directly
2 hours ago, The Blind Wolf said:since waiting for sid balancers.
Working on them, between household projects, jobs, etc. Got the LCDs soldered on over 300 of them today (sure, I know that doesn't mean anything to you, but...!), and hope to be able to completely finish the batch of 400 tomorrow. Hope to get them off to Sean later this week.
35 minutes ago, Sid Genetry Solar said:Working on them, between household projects, jobs, etc. Got the LCDs soldered on over 300 of them today (sure, I know that doesn't mean anything to you, but...!), and hope to be able to completely finish the batch of 400 tomorrow. Hope to get them off to Sean later this week.
Since you told me how small these things are, I'm kind of histent on buying them, cause 1. yes I can solder, but, soldering a wire on something that small and not soldering something else, is out of the question.
Frankly if I can get the two wires that needed solder onto them I would just order them without the screen, not sure if you got any of them like that or not, I can add a heat sink and if its not getting hot, I guess its not balancing, cause either way I would have to use a volt meter to check cell voltage or if the battery in question has a bluetooth bms I can check that way, right now, I only got one batts that can't use bms.
I don't care what color wire, if you care to make me some, just put a knot on the postive wire near the middle and I'll know that its the hot wire.
I know I want 14 for my 18650 and I'll take 4 for the 3.2, I'll just use the 3.2 as a mobil balancer system. then I need at lest 1 of each for spare. 15 3.7 5 3.2
and if the 3.2 batts don't behave I can order a few more. I'm mainly concern on the 18650. If I can kep them balance and use them that will give me another 220ah pushing me to the 22kw mark. which is way more then the solar system I got at the moment to even charge that big of a bank. 970ah geesh.
10 hours ago, The Blind Wolf said:Since you told me how small these things are, I'm kind of histent on buying them, cause 1. yes I can solder, but, soldering a wire on something that small and not soldering something else, is out of the question.
Not to worry. It's a lot easier to identify/figure out than you think. I assume you're familiar with the TO-247 (or TO-3P) semiconductor package? (About twice the size of a TO-220, which is what the PJ FETs are.)
Of considerable help in this instance are the "mouse bite" nibs on the sides of the balancer board--these make bulk manufacturing significantly easier, and allow snapping the boards apart into individual units. There's 2 on each side...roughly corresponding to the connections.
If you have a balancer in hand, large transistor on top, LCD on bottom, the connections identify as follows:
- The battery positive is a large pad to the left of the TO-247 (1/8" x 3/8"), above the upper left nib
- Battery negative is a large pad to the right of the TO-247 (ditto), above the upper right nib
- RX cascading input lead is the lower left "nib" (immediately to the left of the LCD)
- TX cascading output lead is the lower right "nib" (immediately to the right of the LCD)
If you can solder to an 18650 battery positive without shorting to the negative, I think you'll be fine with the balancers.
1 hour ago, Sid Genetry Solar said:
If you can solder to an 18650 battery positive without shorting to the negative, I think you'll be fine with the balancers.
Thats just it, I don't solder on batts, I spot weld, which is easier, . is it just a pad or a hole with apad around it?
I take a nickle strip on most of my batts, take a bulk connector put the strip of nickle in it clamp it then a wire to the other side and clamp it then spot weld tha to the batt. I've not had any issue pull high amps doing that.
matter of fact I got a bms here that is for a 7s that dont' have the darn main wires to it, and I having no luck soldering a wire to stay on it. I've seen now that they are taking botls and nuts to those holes to put the wire on them now, so looking for a small engouh bolt and nut to do that instead.
I use a solderless bread board as well 😛
well,, I'll just order four of them then when Sean puts them up for sale, I don't want to put a lot of money out to sit around, learn not to do that any more. Hence why I bought a real darn Inverter that is rated for what it says it can do.
is it just a pad or a hole with apad around it?
Just a pad, no holes.
You should very easily be able to locate/identify the main power soldering pads, they're really easy to locate by feel, and are very large.
TX/RX lines are smaller, but also quite locatable by feel by the little "nibs" on the sides of the balancers.
Uhm, that is a steal, I could get that same order and have 400ah more of power. won't have that kind of money for another three weeks, but I might snag that up as well if it real. got a link to the thing?.
Hi back s her back shortly I'm not used to typing much when you go to alibaba.com it is Shenzhen Share House s h o u g h u z h e Energy company or if you click trade Assurance you'll get a lot of people to give you offers on what you're looking for I've dealt with Paula Lee that's l i my keyboard is messing up so I'm trying to use speak text I also are y'all using just turn on and off Breakers or like 150ah breakers on your leads from Battery to inverter sorry I've been busy a lot going on took me awhile to get back on here thanks Tim.dumb question you only use bms on 1 battery in your bank right I got a daly 200a 16 S seen 4 cell batterys wired before but with no instructions with rip off price on eBay supposed to have temp control and blue tooth but ahhh it's waterproof.yea .maybe I can find proper wireing diagram.see ya Tim.
A typical BMS handles only one battery.
A typical BMS handles only one battery.
Yep unless you going to do what I going to do is use three 100a bms on one batter, cause it can do 500a with no issue and I need 300a to off set my amprage for max load. This only works with a battery such as the ones I purachse above that can handle 500a, and trust me, these are freaking big batts. I didn't relized that presmatic cells was square and big!!. Love that one end has a stud and the other end does too and it feels like a metal caseing.
Odd, I just brought the new battery bank online, the Presmatic cells, and it didn't take long to get up to my other battery level. They was sitting around 3.35v when I wired them up, I guess they was already on the top end and with my other battery bank it went straight up, I need to check each on though to see what the cell level is now, since the bms I got has no bluetooth, I just run the bank to my victron 100a 12/24 battery protect and watch the voltage go up. I got a hunch either one or two of them went to the max 3.7 and the bms is floating. I had to spot weld one of the bolt cap onto one of the cells it just fell right off when I put a m6 nut on it. it holding on with the nickle strip, though if it can't handle the high load, I'll have to take the battery cell to a welding shop and have them pig weld or use a high power spot welder, since my spot welder is for battery not for heavy metal welding.
https://batteryhookup.com/products/new-catl-modules-with-20x-3-2v-280ah-prismatic-17-92kwh-150-kwh
Not a terrible price for US stock. If only there was a 60v inverter to pair it with 😄
LOL...we're working on it. I'm hoping that the bulk parts order will be ready for transit by the end of this week.