Voltronic VM4 -> Smart BMS (LFP48100PB - BMS KS48100 )

[john1819]

Hi,

Im have problem to connect clone bms to voltronic vm4 inverter do i need special cable? Which port i should stick bms got 3.
Its a KS48100 over bluetooth android app bat-bms i got connection and some info.
What dip switch position?

Protocols what i got in vm4 (option number 5) are: AGM, Flooded, User, Pylontech, Weco, Soltaro, Lib, Lic

I got rj45 clamp etc so i can make own cable

 

[john1819]

I think i found it, i need to make cable like this and set dip switch on slave first up not master

RS485A: voltronic pin 5 -> bms pin 2 or 7
RS485B: voltronic pin 3 -> bms pin 1 or 8
GROUND: voltronic pin 8 -> bms pin 6
optional - voltronic only rs485
CANH: voltronic pin 6 -> bms pin 4
CANL: voltronic pin 7 -> bms pin 5

Its working, on Voltronic VM4 need to set in 05 setting Lib mode i got correct battery procentage on HomeAssistant throught Voltronic VM4 from BMS now that was hard

 

[avovk]

Hi,


I have a similar issue. What app do you use to connect to the BMS?

Thanks

 

[john1819]

Try this one:

K

Post in thread 'BMS protocol and read-out'

Nov 8, 2022

Hello and sorry for digging up this thread. But it seems I have a similar or same battery only without software or cables or a manual.

May I ask what the software is called for the PC? I would also like to get the data into my smarthome later to monitor the akuu somewhat.

Hi, I hoppe it helps.
if you need the Code for Node Red, give me a feedback.

PW: 48V_LIFEPO4_BATTERY

Regards

• kanenas

• 

Password is with extra space at end