MP2 generates flow of low battery alerts and clears, every 30 seconds

DIY
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1

Today my installation acts weird and created a flow of notifications that made vrm suspend my alarm notifications.

This morning the battery reached 10% which I set as minimum SOC yesterday. I would expect as normal one notification alert and later in the day another cleared notification. Instead my system decided to clear every 30 seconds and create another low battery alarm notification. Weird behavior. I do not think I changed a setting, not knowingly at least. In advanced tab two graphs that are normally identical now show a difference just after discharging stopped because of reaching the 10% limit. One graph is system and shows switching or something, but Victron was quiet as normal. The other graph, 5kWh, shows the same battery voltage but without disturbance.
What was happening here ?

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2

Looking at the graphs, it seems the battery bms disconnected the battery, so voltage read by the inverter is wrong as the input is floating.

If the battery disconnect at 10% SOC, you may define a 11% shutdown limit in the multiplus configuration to avoid bms opening the connection

3

Good afternoon,

Ok, you do not want this setting at 10%, first of all, keep it as a real real real low limit at least at 20%, this, as you discharge Lithium many times so low you reduce the lifetime by more than half…

As said above, the BMS is cutting you out…as the BMS is also at its bottom…

Set it back now to 20% asap as you are damaging your batteries…

Regards, Jeroen.