question

dakoal avatar image

How many CANBUS BMS of same kind are supported on one Cerbo / ESS System

Hi.

How many CAN-BMS of the same kind are possible to connect to one cerbo / ESS System?

And how will the cerbo handle these. (Max charge amp as sum of all?)

Has someone running a system with more than one (for example Pylontech) CAN-connected battery and can tell me if the max amps are a sum of the single pylontech 25Amps for example?

cerbo gxBMSVE.Can
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
shaneyake avatar image
shaneyake answered ·
Typically there will be a master battery connected to the Cerbo.

In the case of pylontech, you only connect 1 battery via CAN and then you link at battery modules together using RS485.

You can have multiple CAN batteries if the Batteries themself support Master slave, like FreedomWon.

The current reported to the GX is the total so 4x 25A modules would report as 100A.

1 comment
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Thank you. Then I will give it a try and report here the outcome.