Thanks! and sorry for the late reply I had some computer issues here.
I actually had a chance to test it accidentally, as I was assembling this into the box I managed to short the battery real quick -- there was a powerful spark, but the fuses didn't blow. I guess the BMS took care of it before...
Alright! To be clear tho speaking about burning, are you thinking of the risk from outside, or is that a safety measure "from within", let's say -- considering the fact that li-ion batteries potentially can self ignite?
I saw Jehu built some batteries, separating inside the box two packs from...
it's for spacing/holding the cells in place, as well as a little extra padding/protection for handling/bumps.
Are there any materials recommended for this use, and types of materials NOT TO use, that I should look out for? I'm afraid that the heat or something like that can be problematic.
I'm putting together this battery here:
It's 29.4v 7S10P Li-ion 18650 as you can see from the photos. I have a 100A Daly BMS, a DIY fuse solution of 20A car fuses in parallellx3, and one shunt for an Amp/V meter. I've made the connections I needed to do; Now I need to make a box for...
I have just finished soldering together a 7s10p li-ion 18650 battery of pretty new second hand Panasonic NCR18650B cells, and I am about to solder onto it a Daly BMS for 7S100A.
In a conversation with a friend about which fuses to add at the output power from the BMS, he told me...
(Managed to embed the photos, thanks Korishan!)
It seems like a combination of your answers somehow are correct.
Altho @Korishan: for the record the plus/minus were wired on each opposite corner, like you say.
(Imagine while looking at the photos, I spun the cube 180 degrees towards the...
I'm sure the answer is ridiculously simple.
But I'm assembling here my first pack as a little experiment, from used laptop batteries, that I have tested and rated for Ah, and assembled accordingly.
At the outset they were all around 4.15v, and I've assembled them in 3s3p.
Thanks man for your feedback! I will do as you suggest, I've located a local dealer for electrical scooters that sell a 29.4v (7s) charger at 3a. I guess that'll do the job -- because if I understand correctly the BMS should do the balancing during charge.
The 6S iMax alternative would mean...
I am about to assemble a battery I've been planning for a while, that was supposed to be 7S 24V li-ion.
The project has been infinitely delayed because of crazy shipping times due to the whole covid situation, obviously.
My problem now, is that I don't have a charger that would work...
Thank you! that's exactly the kind of answer I was looking for.
But I was left wondering:
If the 12v configuration of li-ions are able to use 60% capacity, what would be the percentage of 24v? (4.2 * 7 = 29.4, i suppose would be considered too high, also?), where is the "high cut-off" for 24v?
I'm trying to harvest information on the advantages/disadvantages of different volt systems in battery builds.
As I have 100x 18650 li-ion cells of 3000mah each to play with, I'm trying to determine what's the best set up.
I've been dwelling over a 12v 4s set up or a 24v 7s set up.
I don't know if it works, but the 99A would in my head be divided an run by 3 different BMSes (so 120A) -- 3S11P (12V/33A per pack).
Anyway I am considering to go for 4S.
I have 100 cells (@3000mAh) to play with.
So I am considering to make then 2x 37.5A (total 75A) -- with each a 40A BMS.
I'm about to assemble together a battery pack of 99x18650 (3A) li-ion cells.
I am thinking a 3S configuration, and I was thinking to make the pack in three.
In other words three packs of 3S 11P, with each a BMS of 40A range.
And then connect them all with XT60s.
I am fairly new to...
Does anyone have experience with the new iMax B6 Evo?
I suppose it does the same as the old model, just better UI and whatnot.
But regardless of the model, I was uncertain whether or not this also charges LiFePo4?
For the Li-ion it reads 1-6 cells...