How I managed to Configure Multiple x 2 Battery using code provided by Sleeper85

[chaosnature]

I Downloaded the Yaml code from Github and setup 2 Growatts GBLi5001 batteries in parallel

Original Concept has RS485 connection , but as the code was not ready i did without it


and this is the result in working:



Made both settings in the JKBMS JK2a24s15p similar
# Operating Voltage
46v (3.28) to 57v (4.07)

# JK-Can
Absorption Voltage
Absorption Offset - 0.05
Absorbtion Time - 42 mins
Bulk Voltage - 55.7
Rebulk Offset - 0.8
Float Voltage - 54.1 change to 55.9
Discharge Current - 40 A
Charge Current - 40 A
Total Battery Capacity - 95 Ah
SOC 100% 4.0
SOC 0% 3.25 NEW 3.34
UVP 3.33

# JK-Can-2
Absorption Voltage
Absorption Offset - 0.15
Absorbtion Time - 42 mins
Bulk Voltage - 56.4
ReBulk Voltage - 53.6
Rebulk Offset - 0.8
Float Voltage - 56.4
Discharge Current - 28 A
Charge Current - 40 A
Total Battery Capacity - 95 Ah
SOC 100% 4.0
SOC 0% 3.25 NEW 3.34
UVP 3.33

BMS protection settings

Version

Same BMS Model but mismatched from JK



Physical GBLI wiring





Testing phase

Testing voltage from Pin 1 to 14


Testing for voltage and resistivity
the voltage when BMS was turn on
GND <-> RX 3,31V
GND <-> TX 3,32V
GND <-> VBAT50,21V
the resistance when BMS was turn on
GND <-> RX 95,48 ohm
GND <-> TX 0,00 ohm

the resistance when BMS was turn off
GND <-> RX 6,19 kohm
GND <-> TX 3,11 Mohm

Please measure the voltage between
GND <-> RX
GND <-> TX
GND <-> VBAT
Please measure the resistance between
GND <-> RX
GND <-> TX


Growatt data sheet used


Solis End



CAN Port from BMS to Inverter

Ignore 2/6 connection

 

[chaosnature]

Connections - Mine was the first option


Overview final product


My Solar Journey - You-Tube

 

[kolek]

Incredible setup!

 

[chaosnature]

Just Finished off my Second String now - Job Neater



Looking Good with all currently having their own CAN port assigned
String 1 2xCAN BLE in Parallel
String 2 2xCAN BLE in Parallel (Plus the Wired CAN is still plugged into the JKBMS CAN Port)



Second String Voltage values are more accurately close together than the String 1:



Sting -1 = JK-B2A24S15P (Esp32 S3 + Dev Kit)
Sting -2 = JK-PB2A16S15P ((Esp32 S3 x2)

@Sleeper85
How far with the Multi BMS code for testing? - No Pressure - Just curious........

 

[chaosnature]

This is what I ended up doing to the converted Growatt GBLi5001 to JK-PB2A16S15P BMS:






Result:

Next, I will draw in Auto-Cad and Print a 3D cover to make it look legit!!