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system32 reacted to a post in a topic: Sunsynk email notifications (SOC , export etc)
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Thanks for the info. We are OK to always export here; I'd just prefer to put the extra power to better use (EV, appliances). I don't have an export contract, but even if I did, I think we'd only get 10% of the retail cost per kwh. So unless I'm missing something, neither export nor zero export help me get an ROI. We have some suppliers here in the UK offering half-hour market-price tariffs via an API (or at least we did before our energy crisis). And separately, as a result of the crisis, we may also be offered load shedding incentives in the evenings. So if/when this happens it would probably be time to improve my automation position, with respect to grid-charging my batteries when receiving notification of good prices / shedding schedules. I've taken another look at kellerza and it still feels a magnitude more complex than I am comfortable with, at this early stage of my journey. I suppose it's typical for us techies to just stick with the tech we are familiar with. In theory I could just have another selenium script charge my batteries when I detect good prices (even negative prices) from the API. So that could be a next step for me.
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After getting fed up not being alerted when I start to give away my power to the grid, I've finally got a quick solution to this. I just use Selenium to scrape my Sunsynk.net account and send off emails when I'm approaching 100% SOC / about to start exporting. Am I missing something - is there an easier way / is there an API I should be using for this kind of thing? (IFTTT type thing) I notice another thread "sunsynk monitoring" that looks a bit beyond my pay grade as a little domestic user. I was just checking that there is nothing official or obvious I'm missing regarding notifications? Notifications seem such a basic critical feature to be completely missing from the Sunsynk offering.
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I have a possible lead regarding my problem with the battery constantly recharging from the grid in a constantly repeating cycle every 10 mins. "Force Charge" Request I have been looking more at the BMS screen on the inverter. It seems that there is a threshold of 49 Volts, below which the inverter will perform a "Request Force Charge" and raise an alarm "0x03". Please see the attached pictures. You can see that a "Force Charge" request was placed by the BMS when the battery dropped below 49 Volts. Even though the SOC was 79%. Can anybody explain the purpose of this feature.. and what is the implication. Does it mean my battery is broke / has low voltage? You can see the voltage is low even though the SOC is high.
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Thanks. How do I do a "battery reset"? I am in a slightly tricky situation where, at this initial investigation stage, I do not really want to interfere with the hardware, or even the settings. Unless there is a "slam dunk" settings change that we can identify that will almost certainly fix the issue. This is because I am holding out hope that the installer will help at some point, and I do not want the installer to claim that something I did could have contributed to the situation. Can I ask again about the "50 volts" battery threshold that I am observing? Can this be a factor? All of the problems seem to start when the battery drops below 50 volts. In the first few days, this correlated to a SoC of 44% or 57%. Last night, it correlated to 97%. So last night the battery was recharged by the grid in a repeating cycle from 97% to 99%, all night. Every 10 minutes. Is 50 volts normal operating voltage?, or could something in the inverter/BMS assume this is a warning threshold and the battery needs some sort of jolt form the grid to "correct" it's voltage. (Sorry for the newbie theory)
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How can you tell? My firmware is COMM:e424 - MCU:2374
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Yes - this is the core of the issue. This 2kW is not load, it is the inverter intermittently pulling from the grid to recharge the battery. Even though I do not have grid charge active. It seems to happen when battery voltage drops below 50V. Here is the diary of activity so far: Day 1: battery fully drained as expected to 20% (51V) overnight. Then grid was used to power the small overnight load. - (as expected) Day 2: battery only drained to 57% (50V), and then the inverter started pulling intermittently from the grid to keep the battery marginally above 57%(50V) - (not expected) Day 3: battery fully drained as expected to 20% (51V) overnight. Then grid was used to power the small overnight load. - (as expected) Day 4: battery only drained to 44% (50V), and then the inverter started pulling intermittently from the grid to keep the battery marginally above 44%(50V) - (not expected) Last night's charts attached. Battery settings attached. My thoughts: 1.There is not enough overnight load to justify the draw from the grid. 2.The only "constant" I can see from the last 4 days is the grid kicks in when battery voltage drops below 50V. Ultimately my question can be summarised as: Why is the grid kicking in overnight, before the battery has discharged to it's 20% minimum? How do I do this on the mobile app?
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Wow thanks for your quick reply. I will grab the settings and post them when I can. But my thinking was: -the system was working as expected on "Day 1" (Top left screenshot) - i.e. battery discharges all the way to 20% -on Day 2, the battery will not discharge past 57% (Top middle screenshot) So that would imply a setting was changed? But nothing has changed. Thanks again - I'm hopeful we can work this out with you help. I will post the screenshots when I get back.
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Hi I have a new solar installation installed this week by a 3rd party. Their support is very slow so I was hoping to get some input from you. I hope you can be patient with me, as I am very new to this. - Sunsynk Hybrid Auto inverter - Synsynk 5.12KWh battery - 4KW of panels Everything seemed to work fine for the first 36 hours. The battery discharged to 20% overnight, then grid power was used until the sun came up. All good. But last night the battery discharge was unusual. When the battery reached around 57% / below 50V, the inverter drew from the grid to recharge the battery. This is now happening repeatedly every time this 57%/50V threshold is crossed. The battery is not set to "grid charge" Can you advise what is going on?