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PV or grid charges batteries at different wattages

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Just a relative nooby question.

Have been watching SA this morning whilst charging up the batteies before LS at 2pm today and noticed the following:

  1. When there is PV available, the batteries charge at a high wattage and just about match what the PV is generating.
  2. When PV drops away due to cloud cover, Grid then kicks in but the batteries charge at a much lower wattage.

Jusy curious as to why the difference? Because of DC on PV and AC on Grid?

MdF 

Edited by MdF

  • Author

Jacques, of course you are correct with you answer (note to self: insert facepalm emoji here).

Thanks.

MdF

5 hours ago, Jacques Ester said:

Your grid charge rate is set low.

You've just solved a problem I didn't realize I had!

My charging rate seems to be governed in some way and now i know why!!

On 2022/06/24 at 8:27 PM, MdF said:

Just curious as to why the difference? Because of DC on PV and AC on Grid?

The two charge sources (PC and AC) charge the battery through very different pathways, and there are different limits on these pathways.

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