Probably an idiot.. but now I have to do this right. Please help.

The BMS is nothing more than a smart switch. It can turn on or off based on various measurements. You cant regulate power with a BMS, only turn it off or on.

If one battery gets hit much harder than the other under load, you wired them up badly., probably like this just with your bigger battery banks.
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If you want to connect them correctly, you would do it like this:
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Daly does have some annoying stuff about it, had to unplug and replug in the usb connection on a BT adapter that keeps disappearing.
When there is no activity Daly will shut it self-down to save on use of power.
Your solar chargers need power to get the good power into your cells.
For example:
If the sun is not at peak and we have a cloudy day my mppt Victron chargers will consume 450watt a day!
cous they need to deliver a minimum of 56v, but my solar array is somewhere between 0 and 70v a other up to80 v and one to 92v.
My mppt can handle max 100v.
 
The BMS is nothing more than a smart switch. It can turn on or off based on various measurements. You cant regulate power with a BMS, only turn it off or on.
A bms can do so much more.
especially those of Daly....those are just junkyard dogs....one pinky into the fence and you lose your pinky
So start setting your parameters correct.
For example with the help of a balancer:
You can set your cell limit to max 3v and your system(banks) total at 58v....it will shut off when the first cell hits 3.001v
you can set 48v total system limit and your cell limit to 4.5v, than it will cut off at 48v.
Be wise in this one to get the max out of your bank.
But as always keep your cells happy, with second handed keep max minus 10%, system is next
O yes before i forget there is also a temp limit.
In whatever scenario choose your cell limits first.
Calculate with that one towards your pack/system
Whatever max is reached first that is the one that will trigger the bms to stop charging.
When in ideal, the bms will stop responding and you will need to activate if you want some numbers, please only check when there is some activity by means of dis or charging, when in ideal the bms will shut itself off/.
Daly is a real junkyard dog, it will bite you to protect your system!

With best regards Igor
 
you can set 48v total system limit and your cell limit to 4.5v, than it will cut off at 48v.
but one of your cells probably will ignite/catch fire.
I am surprised that nobody thought of this.....or replayed on this........
4.2v is considered the absolute max for a cell, for long life 4.0V.....oke some can do 4.5V(0.01%)

Be careful please.
 
A bms can do so much more.
You can set your cell limit to max 3v and your system(banks) total at 58v....it will shut off when the first cell hits 3.001v
you can set 48v total system limit and your cell limit to 4.5v, than it will cut off at 48v.
O yes before i forget there is also a temp limit.
In whatever scenario choose your cell limits first.
Whatever max is reached first that is the one that will trigger the bms to stop charging.
Pretty much exactly what i said. It measures some sensor and decides if it should allow the battery connection or not.
There are many "smart" BMS's where you can set those parameters yourself.
Xiaoxiang, JK, Daly and Seplos to name a few.
 
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