FBJ

Hi. Anyone know how to troubleshoot a Solarman dongle on a Deye not reconnecting to the wifi. It's been configured, been working fine; however if the wifi ever drops out the inverter never reconnects to it. It has to be taken through the network configuration all over again on the app to get it online. Possible clue to the problem: the dongle is not discoverable all the time - when going through the network configuration on the device, the dongle doesn't show its "AP_...." wifi network unless it's been disconnected and restarted. Even the reset button doesn't prompt it to show its network. Thanks in advance.

That's what I thought made most sense - thanks @jumper

Thanks @Sc00bs - it certainly doesn't seem relevant to use the AGM settings as a proxy for Lithium-ion BMS. So then my question is whether I have the correct settings for the BSL when it's in Lithium mode - it doesn't seem like the BMS is talking to the Sunsynk properly.

Hi. I have a Sunsynk 5kW Hybrid inverter with BSL 5.1 battery. I am not sure that the inverter is correctly determining SOC as I observe it still feeding power to the battery when its apparently full - I'm seeing over 0.5kW charging when 100% SOC. I tried AGM V mode for some time and then switched back to Lithium mode. Interestingly, the moment I did that, the SOC displayed dropped from 80% to 60%. I have checked that I have the latest BSL firmware and Sunsynk firmware. CAN connection seems fine. I gather the float and absorption voltage settings are moot as they're overridden by the BMS when in Lithium mode. I find conflicting recommendation on the float and absorption voltages: The BSL Manual v1.0 says (in Victron setup example): - float: 54.8 - absorption: 55 But this page and this thread and my tech support said the opposite (for "Lithium" mode: - float: 55 - absorption: 54.8 And I was advised that for AGM mode it should be: - float: 54.5 - absorption: 54.6 Any advice, please? TIA

The benefit is you get to make something off the PV power you can generate when you would otherwise have simply curtailed when your battery is full and you have surplus. See green area in bottom vs top of attached chart. Yes, the value will stack up differently for different setups.

Fair point, @P1000 - that would subtract some R1.09/kWh at stated lifetime cycles (which makes it exactly match the export value! ;-). However, the value is back-ended in the extension of life so when valuing it today, with some discounting for time, it makes more sense for me to sweat the battery asset now and make it earn its payback asap. In any case, do you happen to have sight of any Sunsynk battery and export behaviour per chance? And/or advice on the correct battery voltage settings in the inverter for a BSL 5.12? (I currently have float voltage 54.8V, absorption voltage 55.0V). Many thanks.

Are these the correct voltage settings @Daniemj, @Backbone Energy ? I have been unable to find any settings in BSL manuals specific to Sunsynk; however what I do see recommended in the manual for Victron is charge voltage 54.5V, Float voltage 54.8V and Absorption voltage 55.0V. What you have is the other way around?

Hi. Thanks - maybe I should check the battery voltage settings. Why I want to charge battery like that is because of the relative value of the kWh (in Cape Town municipality): 1) Load: R2.40/kWh for every load unit saved 2) Battery: R2.10/kWh for load served by battery after battery efficiency 3) Export: R1.01/kWh for export

Hi. I'm looking for users who are exporting to grid and have batteries with their solar PV and Sunsynk hybrid inverter. I'd like to compare how it prioritises power flow. I'm curious to see if the inability to programme the following merit order under any combination of parameters is affected by battery types: Load; then Battery; then Export Please can you advise what battery you're using and share your System1 and System2 settings page and your System Flow Chart in a scenario where your battery is not yet full and you have excess solar. If you find you are exporting and charging at the same time, then please also provide the System Flow Chart when you've turned off export. Many thanks! My example is attached. I have a BSL 5.12kWh battery:

Yes

Yes

For those who may be following the original thread on whether the inverter can be programmed for merit order: Load; then Battery; then Export I have not had a resolution from Sunsynk support to date. I have been referred to the manual, which does not have a resolution and I have had suggestions that do not give this merit order. Since, as I have not had follow-up, it may mean I must infer that there is no solution with this product.

Yes, I have the CT. Not meaning to be facetious, but is it possible that some clouds came by just then? That's the only explanation I can imagine from what I can see.

I don't seem to have that option or its labelled differently. Might be a firmware difference.

Ya, I have the manuals from here, however they don't give any useful specifics that would help with a merit order of load, battery, export. And they have errors - e.g. this chestnut, where they've jumbled the two settings up.