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
❓ TDT-BMS Wanted Feedback/Experience
- Thread starter Steve_S
- Start date
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.
dajpereira
New Member
Was anyone able to connect TDT 6022 BMS to esp32 via bluetooth and integrate the information on Home Assistant?
RememberTheMagic
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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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RememberTheMagic
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- Sep 26, 2021
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ok I finally got the Port list.
This should be useful !!
This should be useful !!
dajpereira
New Member
I have an ESP32C3 that has UART on GPIO20 and 21, can I connect it direct to the RS232 port trough a RJ11 cable?
NO. rs232 to ttl converter needed
dajpereira
New Member
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?
dajpereira
New Member
Can you share your wiring from rs232 (rj11) to the esp32?
dajpereira
New Member
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 program
How can I know if the problem is with the wiring or with the program
dajpereira
New Member
Not getting the info, just double checked the wiring and all seems ok.
The log is anexed.
The log is anexed.
dajpereira
New Member
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.
Can i connect use converter USB to RS on my Raspi, without ESP32?
you can connect to it, but with what software do you want to read the data?
Last edited:
Can u share modbus address here ?
I connect use pc and use converter chip from Prolific can't sucess. I try buy again converter FTDI chip. Thankyou
This is not modbus. The software sends a command code to the bms, to which the bms responds.
e.g. sends
~25014642E00201FD30
response ~25014F42808000010E0E630E630E640E640E5D0E5C0E5C0E5D0E5D0E5E0E5E0E5E0E5F0E60060BCD0BA10B860B860B860B95FFFC141F331B00592E00015B6814080B00390409E14C.
e.g. sends
~25014642E00201FD30
response ~25014F42808000010E0E630E630E640E640E5D0E5C0E5C0E5D0E5D0E5E0E5E0E5E0E5F0E60060BCD0BA10B860B860B860B95FFFC141F331B00592E00015B6814080B00390409E14C.
~25014F42808000
01
0E 14 number of cells
0E63 3683 mV
0E63 3683
0E64 3684
0E64 3684
0E5D 3677
0E5C 3676
0E5C 3676
0E5D 3677
0E5D 3677
0E5E 3678
0E5E 3678
0E5E 3678
0E5F 3679
0E60 3680 mV
06 6 number of temperatures
0BCD 3021 - 2731 = 290 *0,1 = 29.0 Environment temperature
0BA1 2977 - 2731 = 246 *0,1 = 24.6 Mosfet temperature
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 1
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 2
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 3
0B95 2965 - 2731 = 234 *0,1 = 23.4 Temperature sensor 4
FFFC 12 *0.01 = 0.12 A Charge/discharge current
141F 5151 *0.01 = 51.51 V Total battery voltage
331B 13083 *0.01 = 130.83 Ah Residual capacity
00 0 Custom number
592E 22830 *0.01 = 228.30 Ah Battery capacity
0001 1 = 1 Number of cycles
5B68 23400 *0.01 = 234 Ah Rated capacity
1408 5128 *0.01 = 51.28 V Port voltage
0B00 2816 *0.001 = 2.816 V Sampling Voltage
39 57 = 57 % Stage of charge
0409 3033 = 3033 hardware version
01
0E 14 number of cells
0E63 3683 mV
0E63 3683
0E64 3684
0E64 3684
0E5D 3677
0E5C 3676
0E5C 3676
0E5D 3677
0E5D 3677
0E5E 3678
0E5E 3678
0E5E 3678
0E5F 3679
0E60 3680 mV
06 6 number of temperatures
0BCD 3021 - 2731 = 290 *0,1 = 29.0 Environment temperature
0BA1 2977 - 2731 = 246 *0,1 = 24.6 Mosfet temperature
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 1
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 2
0B86 2950 - 2731 = 219 *0,1 = 21.9 Temperature sensor 3
0B95 2965 - 2731 = 234 *0,1 = 23.4 Temperature sensor 4
FFFC 12 *0.01 = 0.12 A Charge/discharge current
141F 5151 *0.01 = 51.51 V Total battery voltage
331B 13083 *0.01 = 130.83 Ah Residual capacity
00 0 Custom number
592E 22830 *0.01 = 228.30 Ah Battery capacity
0001 1 = 1 Number of cycles
5B68 23400 *0.01 = 234 Ah Rated capacity
1408 5128 *0.01 = 51.28 V Port voltage
0B00 2816 *0.001 = 2.816 V Sampling Voltage
39 57 = 57 % Stage of charge
0409 3033 = 3033 hardware version
Decoding version 2.5 for bms TDT-6022 · Issue #71 · syssi/esphome-seplos-bms
Hello and welcome. I have a BMS as in the topic and it works with seplos ver2.0, but not everything is decoded correctly. Send data: ~25014642E00201FD30 answer: ~25014F4280800001 0E 0DD2 0DD2 0DD3 ...
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