So beginner here. I’m going to be using 12v lithium eel batteries that have the canbus function.
Should I or shouldn’t I use it?
I’ve read a couple posts on canbus and I’m still not sure what it really does and should or shouldn’t I use it.
This will be in an rv that’s mainly used for camping. Just need someone to dumb it down so I hope to understand it. I’d like to use it since my batteries have it.
Interesting, in any case… Try to get the CanBus assignment of the communication port… i.e., where CAN-H and CAN-L are… You should definitely try to see if the GX can find the battery somehow. Can you set a communication protocol in the battery via an app?
Why interesting?
Do again dummy here.
How do I get the canbus assignment
It has an app but I’ll have to get everything working so I can try that. I’m still installing do everything into and running yet. Just trying to get my ■■■■ together so when the time comes I’m ready.
Sorry but when you say CAN-H and CAN-L
What do you mean?
No Problem 
If the battery has a CAN bus function, then it also has an interface somewhere on/in the housing. Here you have at least 2 pins to assign, which then have to go to the GX at the CAN BMS interface. CAN-High and CAN-Low
Do you have a data sheet for the battery or a link?
Here’s the link but it doesn’t have much info
JK - BMS has an app where you can set the communication protocol to “Victron”… it definitely works.
Use the search function for JK BMS … you’ll definitely find enough information there … there’s bound to be something for you …
I’ll look around more. Couldn’t find anything earlier but I’ll keep looking. Thanks.
Hi.
I’m doing the same project with 2x12v EEL DIY boxes for my sailboat. Got CALB 314Ah cells for them which look very good so far, testing total capacity at around 335Ah each.
I believe the main advantages of using the CAN feature will be that the Cerbo screen will be able to show data on the banks - and you may choose to let the JK BMS control the charging profile, using DVCC in the Cerbo.
Check out these fb posts for other user experiences:
To hook the battery up to the Cerbo you’ll need a special Victron RJ45 (Ethernet type) type B cable, using the CAN interface on the box. The CAN setting in the JK BMS should be set to the Victron protocol. If you’re using multiple batteries, you’ll need standard Ethernet patch cables between these batteries using the twin RS 485 interfaces, and to give each battery a device address number in the JK BMS app. Important here is that the one you connect to the Cerbo must have address 0. This will be the «master battery» and if you choose to let the BMS manage charging, it’s this battery’s settings for RCV (requested charge voltage), RFV (Float v.) and timings for these that will be used for the whole bank.
My batteries are still being built and tested. Lots to learn by doing this yourself but expect to do some research.