question

elvis avatar image
elvis asked

ESS during grid Lost. What charging profile is used. MP2, MPPT's?

Is the Multiplus-II still in charge of the battery charging profile during grid loss or are the MPPT's?

With a normal ESS system during grid connected operation the MP2 shows the charge states with LED's on the left side (Bulk, Absorption, Float).

During grid loss there is no charge state indication yet both MPPT's show EXT control.

Everything is VE direct connected.

Who is now monitoring charging?

MP2, MPPT's, Smartshunt?

All can have a slightly different voltage readings.




Multiplus-IIESSgrid
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
seb71 avatar image
seb71 answered ·

It does not change during a grid loss.

1 comment
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

derrick thomas avatar image derrick thomas commented ·

Edit: oops sorry, misread that. You said does not change, my mind saw does not charge. You are correct.

It does if there is more solar than what is needed to maintain the loads.

0 Likes 0 ·