What batteries are you using?
- Thread starter AlexLTDLX
- Start date
I'm in Texas right now, so I don't have to exact size(s) available, but there's a size of pvs electrical conduit that those cells fit in perfectly, and there's a tap size that happens to fit into that conduit perfectly - which I bought (because of course I did). That makes making very high current "modules" pretty easy - you'd just need to drill holes for flat plates to go between the cells for balancing, but since they'd be flat and have a large contact area, I don't see any issues with that.
Just a thought...
Just a thought...
WB projects
Active member
No butI see they are at 10c 22ah. I personally use lifepo4 12s1p 20ah 20c and it was not enough. Maybe 12s3p would have been enough! Keep that in mind
we ended up with a few of these at the shop but I can't find any good info on them. the numbers don't Google haha. I know they are 1s lifepo4 cells but was wondering about capacity and C rating.
figured this might be the place to ask. I've only got 8 so not much use for a e charger. but might make a good car battery with the right bms.
figured this might be the place to ask. I've only got 8 so not much use for a e charger. but might make a good car battery with the right bms.
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Simple answer: It does not 
.
Parallel connected batteries are exactly that, connected in parallel with as little resistance as possible. They "keep" each other "balanced". The balancer is balancing the average of the parallel connected cells. It's the reason why I generally do not like parallel connected cells, and if you must, you should use new cells, of the same capacity and from the same production batch. If you cannot guarantee this, the cells need to be measured and closely matched to each other.
For a 4s 2p pack you would have the + and - terminal, and three balancing wires between the cells.
.Parallel connected batteries are exactly that, connected in parallel with as little resistance as possible. They "keep" each other "balanced". The balancer is balancing the average of the parallel connected cells. It's the reason why I generally do not like parallel connected cells, and if you must, you should use new cells, of the same capacity and from the same production batch. If you cannot guarantee this, the cells need to be measured and closely matched to each other.
For a 4s 2p pack you would have the + and - terminal, and three balancing wires between the cells.
Why 3 balancing wires and not 4?Simple answer: It does not
Parallel connected batteries are exactly that, connected in parallel with as little resistance as possible. They "keep" each other "balanced". The balancer is balancing the average of the parallel connected cells. It's the reason why I generally do not like parallel connected cells, and if you must, you should use new cells, of the same capacity and from the same production batch. If you cannot guarantee this, the cells need to be measured and closely matched to each other.
For a 4s 2p pack you would have the + and - terminal, and three balancing wires between the cells.
Interesting ... you've gone for high voltage and low capacity batteries whereas many others on here are doing the opposite (50V 40Ah) . I went down the middle with 50V 20Ah to keep my weight down (about the same as yours). One thing worth mentioning, here in NZ there are more stringent regulations on systems over about 70V, for safety reasons.
r.brown.bayliss
Member
in NZ, my certifier said something similar, I can't remember what volts he said to be under because when I said about 50v he said that was ok. Plus a whole lot of sensible stuff about how to mount the batteries. which was mostly what I was planning anyway. I'll be keeping him in the loop as I put it all together.
It is the same guy, lol . He mentioned talking to someone else and I figured it must be you!
r.brown.bayliss
Member
The cert shop in Hamilton?