Hi all,
I'm upgrading my battery bank to 2S4P 24v system using SBS 190F Batteries.
Ive just bough a battery balancer and will install it once the batteries arrive.
Will one unit be enough to balance the 4 strings?
What wire gauge should I use for it, +/- and mid?
Thank you
Ideally you should use one balancer per string, but you can also interconnect all midpoints.
You should check fusing and wire sizes in the balancer manual, my gut-feeling would go to 6sqmm with 30a fuses.
Look into the manual/datasheet the balancer is balancing with max. 1A, so a 1,5mm² should be enough.
I'm using just the one I have for now but will eventually get a balancer for each string.
I have a power in bus bar, I guess the positive and negative from the balancer can go straight to the bars yes?
Do I fuse 30A close to the positive bus bar?
Mid point of course I just interconnect all the negatives in the middle all the way down to last string.
Something like this for the fuse could do?
I like the idea to have it on a breaker if needed to be turned off.
Thanks for your time champs
No, at the end of the balancing the current is Zero, so you'll have no voltage drops over the wires anyway.
Sure, but again, check the wiring and fuse size with the provided manual.
On the fuses, fuse for cable size. Preferably all three legs identically.
Do I need to fuse in between each string in the mid point or just one fuse on the positive to bus bar?
I'm still confused on where the fuse go and if I could do without
