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Daly Smart BMS - odd behavior

Thanks MisterSandals!

Also check my mobile app screenshots to see if need any changes?

Just basic set up and 8 cells in series
 

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chg low temp protect should be above freezing. 2-4 deg C is safe. -40C way too low.
I would look at low temp discharge too, its not the best to discharge below freezing, especially at higher discharge rates (low discharge not as bad).
Enter your battery makers charge and discharge current protect amperages. 225A / 272Ah is .83C which seems high to me but maybe a good protect value. See mfgers suggestion, adjust to your comfort level (or expected normal function values...want disconnect if short or over current failure).
Not my battery or BMS so mostly what i think are consensus for basic settings.
 
@CETBOR

I would change the following:

Reduce the charging and discharging current to a reasonable value. The Daly 150A BMS can handle a maximum of 75A when charging and 150A when discharging.

If you have not measured the nominal capacity yourself, reduce it to 250Ah so that the SOC display shows a more accurate value.

Sleep waiting Time: 65535

SOC setting: If the battery is not 100% full, you can enter 25% when charging the battery. The BMS will adjust this when the battery reaches the full state of 100%.

Balanced Starts: 3.400 volt

Balanced diff voltage 0.020 Volt

chg high Temp protect: 45

chg low Temp protect: 5

dis high Temp protect: 45

dis low Temp protect: -5

MOS temp protect: 120

And always remember: The BMS is only for protection, not regulation.
 
Thanks guys,

MOS Temp protect cannot change to 120 so other solution?

Forgot to add and that is my first LFP so it need to charge up before start use it

See screenshots below
 

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O.K. I checked my setting with the MOS temperature protection It says also 47 ...

The problem with the message you are getting is a warning message. You can only set the level for the warning message with the PC app, not with the mobile app. First read out all the parameters in the PC app and set the parameters as required.

1639904781272.png

With the PC App you can set all Warinig Levels-1 and all Cut OFF Levels-2. I have set mine (16S) to these values and everything works fine.

1639904951373.png
 
Thanks and can you help point me right site to download PC app software (Windows and MacOS) so i can get it fixed, thanks
 
DiySolarU said:
It only exist for Windows. Version is 1.2.8 Look at here:

diysolarforum.com

Daly BMS Monitoring Software as of 2021-05 (BmsMonitorV1.2.8.zip)

This is the latest Daly BMS Monitoring Software downloaded from their website via the URL below, it's a bit hard to find on their website as there is no real download section available, so this comes from their news section ;-) and just like the...
diysolarforum.com diysolarforum.com
Click to expand...
Perfect thanks!!


I cannot find to disable the warning, see screenshots and also let me know if all my settings look good? also what about firmware because there is no Daly website for official firmware so should we download latest firmware if my firmware is outdated?
 

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Lev-1 must always be a less aggressive value than Lev-2

Look at my setting above.

You also need to set the SOC level here to 25 and click Set

1639926374821.png
 
Thanks, look like my Daly BMS is dead! bluetooth or USB won't work and have tried to get it to work... is there hard reset... i cannot find a little hole, did take it off and leave for an hour... and try again... still not working, any other solution?
 
But before that it worked in your app? What did you do? There is no reset and also firmware is not downloadable. You have to contact Daly support to get a newer firmware, but it is hard to get it from Daly....
 
Happy New Year, everyone!
I had a (slight) problem with my 4s 250A Daly BMS (reading 2A off currents and cell1 voltage 250mV too low). I updated the firmware with PCMaster after reading that that helped for someone. Now I have a bigger problem getting an "EEPROM storage failure" and I cannot read any values any more. Only the stored parameters are readable.
View attachment 78045
View attachment 78047
I am using the software recommended here for the same hardware version.
Does anyone have a clue what to do?
 
@haluec

Maybe you tried to load the wrong firmeware. Daly 4S is not the same hardware as Daly 8/16S. You need to contact Daly support to get the latest firmware for the 4S and try to load the firmware.
 
After a series of mails, Daly now sent me firmware for the 4s boards in .hex format, which only works with the sinowealth software. But my board only connects with PCMaster. Any ideas? :-(
 
liufu.ty said:
Well that is unfortunately not what you suggsted here and perhaps you didn't check my graph carefully. I uploaded 2 more pics. The left graph shows the SOC and the right graph shows min/max cell voltage. If you know LTO well then you know it has been changing something like from 50%to60% up to 80%. It was charging with 200W in the middle of the day, and my battery pack is only 2KWh capacity. So it actually charged around 10% per hour during the mid day. Or you can view it directly on my shared dashboard above and click onto the advanced tab. It has been charged with more than 8A from 12:33 until later after 5PM the sun goes down, the SOC is capped and not moving at all. This is a firmware bug, I suppose. And I could not get any help from the seller than telling me "top charge it and then set SOC to 100% again". But I already did exactly this 2 or 3 days ago as it was way off and capped at 49% for some reason by then.

I feel Daly's BMS's software side (also they cannot read current blow 2A) is not polished and just a "fancy look" product. I then ordered some QUCC BMS and they arrived today and I set it up earlier on my other battery pack and they work nicely (amps reading can be as low as 0.5A). I haven't figured out is how to set the SOC on QUCC BMS yet, as it is late in China now, I will ask the QUCC seller tomorrow. (Their tech support, or the seller, is also much better)

From the software config page it feels the Daly system is doing very stupid amps monitoring and calculate the SOC solely based on that. It considers nothing with your voltage change. The QUCC BMS seems doing it more "smartly" or what I feel is the standard way of estimating SOC - you combile amps reading and battery voltage reading.
Click to expand...
I had solved the remaining capacity stocked in the same ah by unplugging the 16s connector from the bms and connecting again.
 
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