question

Josep morancho avatar image
Josep morancho asked

Pylontech Battery SOC increases several hours after been charged

I have recently installed an off-grid system with two US5000 pylontech batteries. PV grid has installed 3kw of solar panels and the solar charger is a SmartSolar 250/80.

As you can see in the VRM graphs attached, early in the morning the solarcharger inject charge in the batteries for a couple of hours but the SOC does not increase. After that the solar charger only inject the power requiered for the load connected to the inverter, a Multiplus II 5000, until the end of the day.

Nevertheless, later in the afternoon the SOC increases quickly until reach 100% but the SmartSolar is not charging the battery in that period of the day. This uses to happen every day around 16,30h, less than 1 hour before sunset.

Is there any explanation to this behaviour?


Thanks





3c970554-481b-4e54-bc74-05b755e423f4.jpegImage Caption

2ce7ff90-966b-4139-9cfe-5f7bda2a9b9f.jpeg




da768b18-9b81-4f97-b6af-bbdcbfee4f5f.jpegImage Caption


df967890-0d13-4f43-a0e1-519cd0e92a0a.jpegImage Caption


battery charging
1 comment
2 |3000

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

3 Answers
kevgermany avatar image
kevgermany answered ·

Probably the way the BMV is configured. Please post screen shots of the BMV settings

3 comments
2 |3000

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

Josep morancho avatar image
Josep morancho answered ·

How/where do I get the BMV settings?

1 comment
2 |3000

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

Mark Whittaker avatar image
Mark Whittaker answered ·

I have seen this before on new installs, The batteries are balancing, give it a few cycles and this will sort itself out.

2 |3000

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