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❓ TDT-BMS Wanted Feedback/Experience

did you get any solution for SOC problem. I also facing the same and reported to TDT
And if you drain your battery to say 0% in my case since I guessed too high 315AH is dreaming you will still have some AH left in the tank but the battery is empty so say you still have 5AH (5000mAH) then 315-5=310AH and you could plug 310 for Full Capacity and 0 for Remain Capacity click W then charge battery up to fully charged and that value will be very close to your full capacity it might not be 310 it could be 310.5 or 309.3AH.You dont have to drain to 0% if you know the charging and discharging curve of LIFEPO4.There is very little capacity like 2% above 3500mV and below 2900mV maybe 2% this is negligible you want to keep your charging and discharging on the FLAT part of the curve.For me charge to 56V float at 55.2V or 3450mV per cell and discharge to 49 or 50V.I hope this helps
 
And if you drain your battery to say 0% in my case since I guessed too high 315AH is dreaming you will still have some AH left in the tank but the battery is empty so say you still have 5AH (5000mAH) then 315-5=310AH and you could plug 310 for Full Capacity and 0 for Remain Capacity click W then charge battery up to fully charged and that value will be very close to your full capacity it might not be 310 it could be 310.5 or 309.3AH.You dont have to drain to 0% if you know the charging and discharging curve of LIFEPO4.There is very little capacity like 2% above 3500mV and below 2900mV maybe 2% this is negligible you want to keep your charging and discharging on the FLAT part of the curve.For me charge to 56V float at 55.2V or 3450mV per cell and discharge to 49 or 50V.I hope this helps
Now i am using inverter with can communication and after the latest firmware update it seems to be much better. Using 100Ah Highstar cells , Now I have changed the design capacity, FCC RM to 105Ah after charging to 56.8V and set 56.8V as pack full and Alam Voltage since its sending alam voltage as charge voltage from BMS. after few cycles now its showing 103Ah reaming at full charge and FCC will be around 104. in JUNTECH external shut it will show 99.1 to 98.5Ah when bms showing 100% SOC.
initially I was used 56V as pack full and 56.8V as alam voltage. Then also tried with 56V as pack full and alam voltage - in this case external meter will show around 95AH stored to battery.
 
Was anyone able to connect TDT 6022 BMS to esp32 via bluetooth and integrate the information on Home Assistant?
 
Anyone got accurate port descriptions for the TDT-6032? The on I have I am trying to use CAN to talk to the inverter. The BMS vendor (reseller) is saying use Port 4, however that appears to used for parallel battery communications and not to talk to the inverter. I saw another image that says Port 2 is for CAN communications to the inverter.
 

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I have an ESP32C3 that has UART on GPIO20 and 21, can I connect it direct to the RS232 port trough a RJ11 cable?
 
Can you please share the link of that converter? What kind of converter can I use to connect the RJ11 cable (fromrs232) to the ESP32-C3 uart?
 
I did!

I've change a new esp32 and uart-to-ttl, I think during my last connection I've burn the ttl converter, otherwise done!!!

Thank you so much.

Just the last one.., there is no switch entity CHG MOS and DSGg MOS ?

Thanks
Can you share your wiring from rs232 (rj11) to the esp32?
 
Need some help here, I connect the RJ11 cable from RS232 (GND, RX, TX) to a MAX3232 (as show in picture 1) and then I connected the MAX3232 to ESP32-C3.

How can I know if the problem is with the wiring or with the programIMG_20240531_144036.jpgIMG_20240531_143221.jpgIMG_20240531_143246.jpg
 
Not getting the info, just double checked the wiring and all seems ok.

The log is anexed.
 

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Where do I find the HA api? never done nothing with that method and when I ask for it in the esphome app it doesnt give that API and points to the yaml configuration.
 
hi

anyone found solution to SOC problem, i did the 0 discharge but it back same problem, around 51.1-52v assumes 10% so is very wrong the SOC ?
 

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