Using AC2 OUT of a Multiplus II without a AC input

DIY
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3

If the system will be remote or w/o trained personal I recommend:

Set shutdown voltage in MP2 higher than low voltage shutdown of BMS.

Use Lynx Distributir with dbus-Lynx to monitor fuses.

Connect internet for monitoring via DC. Meanwell has good and cheap DC-DC converters.

Maybe think about a small buffer battery for Cerbo GX/Ekrano and internet. If BMS switches off, you get an alarm via VRM.

You will find some ideas on bom in my system description: