question

bertie-kotze avatar image
bertie-kotze asked

ESS system, no more power feedback to grid after LI battery upgrade.

System before the upgrade:

Installation year: 2016, 4 x Sonx 260 A/h AGM batteries, CCGX, Multiplus 48/5000/70, BlueSolar MPPT 150/85. 4800W PV pannels.

System after the upgrade:

Installation year 2022, Dyness Powerbox 7.2 kWh 48/150Ah, Cerbo GX, GX Touch 50 Screen, Multiplus 48/5000/70, BlueSolar MPPT 150/85. 4800W PV pannels.

The system does not want to feedback the extra power from the PV's to the grid. The installer now says that the problem lies with the BlueSolar MPPT 150/85 and they have to replace it with a new MPPT.

Did anyone here experience the same problem?

Lithium Battery
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2 Answers
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nickdb answered ·

If the mppt is producing power and its information is visible on the gx, then it is working fine.

Are you sure there is surplus pv available?

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bertie-kotze answered ·

Yes we have more than enough PV power

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