Without naming names I have had installed a battery storage system to my existing 4KW PV system. The panels are of a split East West configuration and the inverter is a big blue box with twin tracking MPPT. The battery system comprises of a small-ish yellow box and is described as a converter, but it isn't a converter but a charge/discharge controller, and, uses one string of my PV panels. The box offloads my excess power to the battery until the battery is fully charged or the sun goes down. Usually the latter at this time of year. My question is should the battery via the yellow box drive the original inverter to supply power to my house during darkness, as long as power is available in the battery?
The DC string from my roof is fed into the yellow box. The yellow box sends the excess power on to the battery. Now when it's dark the yellow box is kept alive by the battery and according to an app on my smart phone is being discharged. After looking at the DC wiring from the yellow box it feeds the big blue inverter. Through the daylight hours this arrangement works fine, because the big blue inverter is kept alive by the power from the roof.
Should the big blue inverter be kept alive by the power from the battery that is going through the yellow box?
Thank you in advance.
The DC string from my roof is fed into the yellow box. The yellow box sends the excess power on to the battery. Now when it's dark the yellow box is kept alive by the battery and according to an app on my smart phone is being discharged. After looking at the DC wiring from the yellow box it feeds the big blue inverter. Through the daylight hours this arrangement works fine, because the big blue inverter is kept alive by the power from the roof.
Should the big blue inverter be kept alive by the power from the battery that is going through the yellow box?
Thank you in advance.
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