Hi all,

So I finally got solar installed and connected to my setup, and now trying to work out the right settings under System Mode. So far it looks to be working as expected, however, I've come across one issue: it's not fully charging to 100% - it seems to stop at 89%.

See picture of current settings:

My setup is:

• Sunsynk Sun 5Kv
• Hubble AM2 Lithium Battery 5.5kWh
• 10x JA Solar 460W

I think the obvious answer maybe is that the "Power" setting should be 5500?

My other question is. In the mapping of the system it doesn't show a house icon. There is a CT coil installed and the geyser/stove is on non-essentials before the inverter. Does this mean it isn't supplementing the non-essential at the moment?

Thank you!

 

Edited December 3, 20223 yr by Praemon

I am going to follow this thread as I am changing my inverter from luxpower to the 8kw sunsynk and would like to learn more about settings for these sunsynks.

I unfortunately cannot help you.

You've limited your battery charge amps to 40A, and that should limit your charging rate to around 2kW, regardless of the 5000W setting on the System Work Mode page

Try to grid-charge to 100% over a longer period of time, or else increase the Charging Amps. The battery datasheet indicates it can take 100A, but 75A might be enough.

Also, you don't appear to have much solar generation and surplus power (or it's just too early?), but 99W charge rate will not fill that battery anytime soon, it'll take around 6 hours to get to 100% assuming there's no additional load that demands that power.

1 hour ago, Praemon said:

I think the obvious answer maybe is that the "Power" setting should be 5500?

Leave it at 5000. This is the inverter power - and you have a 5kW inverter

1 hour ago, Praemon said:

I don't have a Hubble myself, but according to the specsheet, it can take 100A (or 105A for Rev2) for both charge and discharge. I recommend you change these settings

1 hour ago, Praemon said:

So far it looks to be working as expected, however, I've come across one issue: it's not fully charging to 100% - it seems to stop at 89%.

I don't know how the Hubble behaves, but the Pylons are typically 'stuck' at 89% SOC for quite a while before making a sudden jump to 100%. Maybe just be a bit patience. Usually the BMS drops the charge amps at that point to fully charge and balance all the cells

I assume you have a comms cable between the Sunsyunk and your Hubble - correct?

5 minutes ago, GreenFields said:

Also, you don't appear to have much solar generation and surplus power (or it's just too early?), but 99W charge rate will not fill that battery anytime soon, it'll take around 6 hours to get to 100% assuming there's no additional load that demands that power.

I would assume that this is due to the BMS reducing the amps it is willing to accept at that point

Thanks for the feedback @GreenFields and @wolfandy - much appreciated.

So I had the charge rate set at 40 based on the recommended settings here: https://www.hubblelithium.co.za/sunsynk (which is actually 30)

I've adjusted to 50 though and will see how it goes. I don't think the charge rate is a major issue though. The battery went from about 40% at 6:30am to around 86% at 8:49am just off solar. That's when it slowed right down as per the graph below. There's plenty of solar output because if I use an appliance that pushes up the usage it immediately covers it, so I think it's as @wolfandy mentioned and the BMS/inverter is limiting it.

Quote

I assume you have a comms cable between the Sunsyunk and your Hubble - correct?

I believe so - at least I paid for it 😅 is there a way to check? I see I do get BMS info on the Inverter such as SOH.

Will monitor it and see how it goes.

Edited December 3, 20223 yr by Praemon

1 hour ago, Praemon said:

So I had the charge rate set at 40 based on the recommended settings here: https://www.hubblelithium.co.za/sunsynk (which is actually 30)

Interesting - did not know that Hubble recommends different charge and discharge rates

1 hour ago, Praemon said:

I believe so - at least I paid for it 😅 is there a way to check? I see I do get BMS info on the Inverter such as SOH.

The it is connected 👍