AC500 shutdown AC/DC outputs does not work

Product Discussion BLUETTI AC Series
1

I have set the custom mode so that the AC and DC outputs are switched off when the battery is at 20%.
Due to a power outage yesterday, it was not possible to recharge from the grid.
However, the AC500 did not switch off the outputs and the system was completely discharged.
Why was this setting implemented if it doesn’t work?

Screenshot_20241005_130257_BLUETTI
Screenshot_20241005_130257_BLUETTI1440×2923 101 KB

2

@Akel
Below 20% will not stop output.
This means that when the SOC is below 20% in UPS mode, it stops output from the battery and bypasses from the grid instead.
But when the grid is out, there is no grid input and no such thing as UPS mode, these settings don’t take effect. When the machine is in an off-grid state, the priority is the load.

1 Like
3

Thanks… You have described is understandable.
But what does the upper value mean, in this case 80%? What happens at this point when PV and the grid are switched on? I thought that when the charge level falls below 80%, the batteries are charged from the grid until around 90% is reached. Please explain this again in a way that is understandable.

4

The upper limit is when the SOC rises to the upper limit value and stops charging the battery from the grid, the PV charging is not affected.

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5

Thanks for the explanation. It is described a little differently in the manual, hence my question. It should be revised and corrected.
Greetings from Germany