Is it posible to not just charge batteries, Can it Export to grid when batteries is full?
If you have activated “DC surplus feed-in”, the surplus energy from a DC generator would be fed in. The system would not care where the “DC” comes from. While the system could shut down the Mppts, it has no access to your generator … it just keeps running.
However, bear in mind that the system would raise the mppts by 0.4V on the DC side with a 48V system … Your alternator should be able to supply this higher voltage, otherwise it will continue to idle, because nobody will then reduce its output.
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