I'm trying to assist my neighbour to get his AM5 batteries BMS data into home assistant.

On my setup using different batteries I just installed a Pace BMS addon plugged in a RS232 with EPS32 Wifi Bridge to mine and whala data got pulled in. Happy days!

However on his setup with Hubble AM-5 batteries which I thought was also using Pace BMS it seems Hubble in their infinate wisdom and maniacal push for force hubble cloudlink onto there users have restricted the BMS with a custom version or different BMS it seems.

It uses a BMS tool that pops up an option of VKPH or VKPG as the BMS Board type. Anyone know of a way to get this or have reverse engineered this so to pull the BMS Standard data to Home Assistant. He also has multiple batteries so was looking to setup similiar save guarding rules based on the individual battery info that you can get from the BMS but I've been hitting the brick wall called the Hubble 🖕

Much appreciated.

Have you managed to make progress with this?

Ive tried both the HA Pace BMS addon and the Gobel system, unable to get any response from the AM5's

Unfortunatly no

I was looking into this option https://powerforum.co.za/topic/33013-connecting-to-my-pace-bms-batteries/#comment-223092 but with how Hubble have their warranty written to include both the RS232 and RS485 port as voiding warranty is absolutely absurd.

23. It is forbidden to connect any 3rd party devices to the service ports, which is the RS232 and RS485 ports. These ports are reserved for workshop maintenance only and is for programming the BMS. Connecting any 3rd party devices to the RS232 or RS485 ports will void the warranty.

Given my neighbor just had to warranty repair two batteries do to failed firmware updates hubble tried to do he is hesitant to have me fiddle in the settings on the battery ports to try connecting via the RS485. We send a mail to hubble to find out if we could adjust the port protocol without issue but all we got thus far was cricket sounds.

I made a video recently using the RS485 port on my BSL Batteries to read the data from the batteries which have PACE BMS's.

As far as I know the Hubble's also use PACE BMS's so the communications should be the same.

https://youtu.be/HlKNxRJbX3Y

@-cK- I am also working on getting the data from the batteries using the CANBUS that goes to the batteries along with help from Ohan @ZS1SCI

I should hopefully have a video showing how to snoop the connection for the data in the next few weeks.

@Sc00bs Cool, yea just had a chat with my neighbor after he got his batteries back earlier this week and the answer he got from hubble when he ask them spesifically about using those ports on their batteries to get data to HA is a solid Nope. Utter BS imo but yea what can one do if you don't want to risk voiding a warranty, so getting the data from the canbus will be awesome.

Eagerly awaiting that update and video.

Hi @-cK-

Managed to sniff the CANBUS coms between the inverter and the master battery BMS and it is very limited with the information it provides the inverter.

No individual cell voltages, deltas etc.

You can get all the data sent over the the CANBUS from the Inverter so no need to capture that as well.

Not sure what your other options might be if any.

Thanks @Sc00bs

Yea that doesn't leave us with any great options. So unless Hubble lightens up on their restrictive warranty clause listing both RS232 and RS485 (which they will not) the only option will be to fiddle on the RS485 and protocol settings but that risks voiding the warranty if Hubble has a method to see that on the BMS logs or something so doubtful my neighbor will do that for obvious reasons as he just had to have the batteries fixed under warranty.

So perhaps if there is someone willing to take that risk or have a AM5 out of warranty that feels comfortable to fiddle with the connection via RS485 and confirm a method we will be left in the hands of hubble and their cloudlink device/app to see if they might open that up to HA but doubtful on that front as well as even in cloudlink app there is no individual cell or battery data to pull either.

However my neighbor have given this request/suggestion through to them for their app development team and the relevant data we would like to be able to access so who knows 🤷‍♂️.

Edited October 17, 2025Oct 17 by -cK-