AiO battery cell monitor/app?

Good evening all,

Add another somewhat vexed customer seeing sustained odd behaviour (charge and discharge rates significantly out of sync with usage and capacity) from a six-month installed All-in-One, already logged a call with the installer and waiting to hear back from them. Looking at other threads can see numerous examples of what I believe is the Andrew Miller app allowing owners to dig into individual cells in the battery but which doesn't work with the larger cells of the AiO. Is anyone aware of such an app that does work with the AiO so I can dig a little deeper try to figure out what's going on inside this thing?

Having an AIO for just over a year now and seeing the somewhat erratic charge reporting ( it is sort of behaving at the moment ) I wondered if the issue only applied to Givenergy batteries. I read that it is related to the LFP chemistry having a low range of voltage between empty and full, and accurately tracking this is the source of the problem.
It's been an ongoing issue for quite a while so I don't think there's a quick fix otherwise we'd have already seen it. If it's the BMS board hardware then if it were modular a repacement board might fix the issue.

[unknown] Home Assistant and GivTCP will allow you to see all individual cell voltages.

I have just posted this on another thread which goes someway to explaining the difficulties in measuring SOC from LFP batteries:
https://community.givenergy.cloud/d/5636-can-an-inverter-prevent-a-battery-fully-charging/17

Rob

Goshiki2 Home Assistant and GivTCP will allow you to see all individual cell voltages.

Actually, you don't need to use HA. GivTCP by itself In a Docker container) will generate all the data including battery voltage and temperature, and will publish it to a MQTT broker (which is actually included within the GivTCP package). You can examine the data using just a command line, though it is much easier to use a tool like MQTT Explorer.

If you want to store and examine the data for trends then you can use HA, or GivTCP will publish it to an InfluxDB instance.

None of these alternatives are for the faint-hearted, I'm afraid. I haven't come across a simple app that will just show you the info you want.