Hi
Just got a new JK BMS B2A8S20P with a RS/485/CAN port. Tere is a red and a black cable, guess it is red positive and black negative.
What do I need to connect this BMS to Cerbo MKII via CAN bus
Unknown to canbus.
Have a look at jk to victron here GitHub - mr-manuel/venus-os_dbus-serialbattery: Battery Monitor driver for serial battery in VenusOS GX systems
Thanks !
Hi
A bit confused…
Do you have a part number for this ?
What else do I need to connect it to Cerbo GX MKII ?
The BMS I have is a JK BMS B2A8S20P HDC
I have got suggestions on to use a communication bord ???
I really need some help on this 
A simple google search of " jk bms rs485 module" should bring up what you need.
Just remember there are two variants, get the correct one specified for your bms.
More info
https://nl.aliexpress.com/item/1005007581408316.html?gatewayAdapt=glo2nld
or
https://nl.aliexpress.com/item/1005004233638105.html?gatewayAdapt=glo2nld
I have only the A and B connected (no ground and no +)
Yes, you need a 4-8S version
Hallo
I’m using the “Peter-board”
It connects to Victron with a “BMS A” cable via Can, no need for a MKII
shop.jamestronic
very expensive solution
yes thats true
but there’s no driver to install, i had never a problem with updates
it s working out of the box, a native solution
serial battery is not with out problems, when you want to use gui-v2
I had some problems in the beginning but after an update the problem was solved.
For security I use isolated RS485-USB adapters and have 3 JK BMS (2x16S +1x8s)Battery and a small JK BMS (8S) test battery and all work as a charm with SerialBattery
There is Yambms, ESP32 based so inexpensive
Actively developed, RS485 and Bluetooth also supported is the Smart shunt which is great for negating SOC drift
Thanks, looks great