February 8, 20224 yr Installed a Daly BMS for 24 v battery. The batteries are charging to the correct voltage. Balancing is ok. The only problem is that the SOC always report 100% on the BMS even if the cells read 3.1 volt. There was no manual with the BMS. How do I correct the SOC. Ah rating is set correct and charging at 3.4 volt. Any help will be appreciated.
February 17, 20224 yr How do you see the SOC? Do you run some software? Battery voltage meter? Smart shunt? Edited February 17, 20224 yr by iiznh
February 17, 20224 yr Author The Daly smart BMS connects with Bluetooth to your phone. Get all the information, settings, SOC, every cell voltage and temp on your Cell phone.
February 17, 20224 yr On 2022/02/08 at 7:44 AM, Chris Louw said: There was no manual with the BMS. Have you tried downloading the Manual from this source yet? https://diysolarforum.com/resources/daly-smart-bms-manual-and-documentation.48/
February 17, 20224 yr It is likely the app you are using... That said the BMS does not have a coulomb counter so it wouldn't know, so any value is just a guess. If you want to have a accurate measurement you will need to invest into more equipment
February 18, 20224 yr I suspect Setup of BMS, PM supplier with Screenshots..? My LBSA DALY 100a 4S 12V LiFePO4 Smart BMS with Bluetooth works 100%
February 19, 20224 yr Author 21 hours ago, Gidsie said: I suspect Setup of BMS, PM supplier with Screenshots..? My LBSA DALY 100a 4S 12V LiFePO4 Smart BMS with Bluetooth works 100% Tanks Supplier busy checking BMS.
February 24, 20224 yr Your BMS is probably not wired correctly and it isn't measuring power draw at all
February 24, 20224 yr Author 8 hours ago, Gnome said: Your BMS is probably not wired correctly and it isn't measuring power draw at all It was reading Discharged Ah and Charged Ah. but it was faulty. BMS was replaced today. Thanks LBSA. Should be OK now.
February 28, 20224 yr Author On 2022/02/17 at 6:59 PM, iiznh said: It is likely the app you are using... That said the BMS does not have a coulomb counter so it wouldn't know, so any value is just a guess. If you want to have a accurate measurement you will need to invest into more equipment It is working now. Counting cycles and SOC.
February 28, 20224 yr 1 hour ago, Chris Louw said: It is working now. Counting cycles and SOC. I must say the customer support from Lithium Batteries SA is great. I am happy that you tracked down the issue, the last Daly I used we wrote a little program to fetch the values from a RaspPi via RS485 and the SOC seemed to be a guestimate based on the average cell voltage, the moment the lowest cell hit cutoff, SOC would jump from 30% to 0%. This was due to some unbalanced cells caused by charging too fast. Edited February 28, 20224 yr by iiznh Grammar
February 28, 20224 yr Author 52 minutes ago, iiznh said: I must say the customer support from Lithium Batteries SA is great. I am happy that you tracked down the issue, the last Daly I used we wrote a little program to fetch the values from a RaspPi via RS485 and the SOC seemed to be a guestimate based on the average cell voltage, the moment the lowest cell hit cutoff, SOC would jump from 30% to 0%. This was due to some unbalanced cells caused by charging too fast. Everything is working. Connects with WiFi, Laptop and Touchscreen. SOC seams to be accurate. Yes happy that LBSA replaced the BMS.
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