The BMS doesn't limit charge current. What you do is place something (such as a raspberry pi) in between the bms and the charger (assuming the charger is a smart one (Victron is an example), which instructs the charger to throttle the current.
Now I might be running a Batrium on my house battery, but its the same concept. The batrium (in your case Daly) feeds a raspberry pi running the victron Venus image, this then talks to a Smart Solar 150/35, which gets told to reduce charging current when the cells are balancing, or stop charging completely and just supply the load when the batteries are full. This means if my load is drawing 4 amps, the charger will deliver 4 amps, thus supporting the load and keeping the battery full until sundown.
Yes there are drivers to make the Victron Venus software understand "Daly" speak.
Likewise, to protect my battery I have the software shut off the inverter when the battery is down to 10%, and send an alert (push notification when its down to 20%. The DC loads are so small they won't completly drain the battery (router, modem). When this does happen anyone on a desktop gets turned off, and it's time to switch to laptops, tablets or phones on WiFi. This is another indicator as the wifi is called "Low Battery WiFi" and only becomes active when the battery is low. I also have an emergency power switch that will override the software and allow the batteries to drain to 2.7V p/c.
Apart from testing, I have never reached 20% on my batteries, and only seen the system warn me a few times, all during testing.
My switch is a big 24 port 10GbE uplink mains powered POE+ thing, so when it goes down, so does the main wifi, as its powered over POE.
Nice setup!
In a nutshell, if you want more Control then the high voltage setting on the MPPT, low voltage setting of the inverter and BMS, you need to spend some serious money.
There are high quality components like Victron who can give the correct information and help making the right instruction set.
If the Eve cells from alibaba/AliX are worth this, can be a different discussion as more and more people find out that their "Grade A" is more like a B or C or D...
2 years ago the real grade A were +$300, and our price was around $75...
(280AH eve)
That should have given some indication.?
Those probably won't last 15-20 years, even with the amazing finetuning that you did.
Compared to lead acid, longer life (for me living in hot Thailand), no fumes (unless fire ??) more efficient charge and discharge, a lot more usable capacity (DOD)...
Even with 5 years the Alibaba batteries where good value for the money.
I hope they last double of that.
For those "cheap" batteries, you might better put the money aside instead of investment in Victron to better control the battery.
As it probably won't make any difference for how long you can use.
(With correct settings in inverter and MPPT)
That is, if this would be the only reason to buy it.
There are many good reasons to buy Victron, and it probably will outlast the battery.
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