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Solis Hybrid - charge battery using Night rate

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    #152
    Ballyv24
    Registered Users Posts: 1,144 ✭✭✭Ballyv24


    Hi,

    I don't think I can follow the steps in this because my inverter is showing the incorrect time. Once I change to the correct time, it reverts back again within a few minutes.

    Any suggestions on how to fix the time?



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    #153
    SD_DRACULA
    Registered Users Posts: 2,236 ✭✭✭SD_DRACULA


    You can't do much about that, apparently the battery SOC drifts are a few days of not being charged and this will keep happening

    I had this many times happen around this time last year when I was not charging from grid and even talked to Solis about it, it is expected behavior and you SHOULD let the grid charge happen or the battery can go to 0 and possible get damaged.

    You can either charge the battery from the grid fully every now and then or charge the battery to 100% and power it off until the good weather comes back.



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    #154
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    Apologies if this has already been asked but what would the maximum charge be for a battery at night from a solis. I've been assuming that the batteries can charge at 16amps but I saw on another thread people taking about not having enough time to fully charge. I'm getting two 4KwH batteries, I'd assumed I could fully charge in roughly 2.5 hours at night.



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    #155
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,118 Mod ✭✭✭✭Jonathan


    https://www.boards.ie/discussion/comment/119778820#Comment_119778820

    When talking about batteries, people tend to talk in terms of DC, so 50A * 51.2V = 2500kW.

    Depending on your setup, the inverter or the battery could be the bottleneck.

    A 5G Solis Hybrid is rated for 100A charge/discharge, but what people have found is that in reality it derates itself to about 70A. That limits you to 3.5kW.

    What batteries are you getting? You will be limited by the battery charge/discharge rate.



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    #156
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    A WeCo 4K4 Pro. Not sure how to interpret the figures in this table.

    Screenshot_2022-10-22-14-42-11-10_f541918c7893c52dbd1ee5d319333948.jpg

    Because I've two batteries, would is would that allow for better charging times than one big battery?



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    #157
    Jonathan
    Moderators, Education Moderators, Home & Garden Moderators Posts: 8,118 Mod ✭✭✭✭Jonathan


    https://www.boards.ie/discussion/comment/119779390#Comment_119779390

    86A * 2 = 172A. You'll likely be limited by the inverter.



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    #158
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    So a potential capacity to change at Getting the SOLIS RHI-6k-48ES-5G which has a stated Charge/discharge of 100A, but at 70 I would be limited to 3.6Kwh as you mentioned. I was reading through the batter documentations are there seemed to be a reference to once it gets to 90% the charge current drops to 10A, so 1Kwh. OK so the long and short, I'm still looking at around 2.5 hours to fill both batteries, so fine. Also sounds like there is an advantage to having two batteries over a single larger one.

    I'd hard for me to imagine people running into problems having enough time to charge batteries at night, is this really an issue?



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    #159
    graememk
    Moderators, Home & Garden Moderators Posts: 5,858 Mod ✭✭✭✭graememk


    https://www.boards.ie/discussion/comment/119779595#Comment_119779595

    On a day night meter, there is no issue.

    But if your trying to do it on the smart meter night boosts... It gets tight.



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    #160
    SD_DRACULA
    Registered Users Posts: 2,236 ✭✭✭SD_DRACULA


    https://www.boards.ie/discussion/comment/119779595#Comment_119779595

    When you have a 20kwh battery it is impossible to charge it 2.5 hrs yeah😂



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    #161
    Bobeagleburger
    Registered Users Posts: 45,280 ✭✭✭✭Bobeagleburger


    Depending on where your batteries are stored, the cold weather can impact charging. That was my experience with Pylontech anyway.


    On a seperate note that tiny window of "cheap" rates the smart plans offer is a joke. Give me a decent night rate (full 9 hrs) and I'd have no problem moving to a smart meter.



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    #162
    islander222
    Registered Users Posts: 63 ✭✭islander222


    Followed the assistance on this thread and charged my batteries last night. Not on night rate but had a planned power outage today and now successfully running my office and WiFi off the battery via a couple of extension leads.... Battery was 70% full at time of cut off and 4 hours later its at 62% (even after boiling the kettle for lunch!)... good to have an idea of how long we'll get out of it with the basics (Wifi, TV/monitors, odd cup of tea etc)...

    Super added advantage and convenience to have the battery with Solar...

    Always wanted to test the theory out, particular in advance of winter storms - thought process is if we can manage to have the battery's fairly well charged just before a bad storm then we can keep the WiFi and TV's going in case of an unplanned outage - i.e. keeping the kids happy!

    Also found the following useful: https://blog.jonsdocs.org.uk/2022/08/07/solis-hybrid-inverter-charging-from-the-grid/#:~:text=As%20we%20want%20to%20allow,during%20your%20configured%20time%20periods.



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    #163
    con747
    Registered Users Posts: 5,890 ✭✭✭con747


    https://www.boards.ie/discussion/comment/119795116#Comment_119795116

    I have my 10kwh batteries set to stop discharging @30% so I can use that in case of power cuts in my area, 7 in total this year latest one was yesterday. So I always have 20% at least to get through one.

    Don't expect anything from life, just be grateful to be alive.



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    #164
    Delber
    Registered Users Posts: 29 ✭Delber


    https://www.boards.ie/discussion/comment/119795116#Comment_119795116

    Hi Just following on from this I attempted to set night charge using Jonsdoc manual this at the weekend but I don't seem to have the option of Self use under Storage Energy Set Function

    I have sent an email to solis support to have my inverter firmware updated as this maybe my issue its currently Model no F8 Software version 280016 its a

    Can anyone shed light on this?



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    #165
    irewestlad
    Registered Users Posts: 44 ✭irewestlad


    Has anyone charged a PureDrive 5kWh battery from a Solis inverter at night time? What were the best settings to use? From reading this thread, sounds like it’s best the limit the A to prolong lifetime



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    #166
    Oisin4343
    Registered Users Posts: 9 ✭Oisin4343


    Solis Inverter 7Kwh panels with 2 x 5kwh Puredrive batteries - I have set up to charge batteries at night rate, however when showing 100% charged only approx 5kwh register on the phone app even though I have 2 x 5Kwh batteries.

    1. Can both batteries be charged off the grid during the night to provide full power in both batteries? (maybe leaving small space for PV charge in summer time hours)
    2. Can both batteries discharge as required from 8am - 11pm during the day to maximise gain?
    3. Can the solis inverter need to be set up to kick in if there is a power cut - system surrently not set up for this even if charge in batteries. Installer says / would not advise on using the PV system as a backup in times of ESB outages?

    Any comment advice appreciated - only just have the system installed so a novice to this area.



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    #167
    con747
    Registered Users Posts: 5,890 ✭✭✭con747


    https://www.boards.ie/discussion/comment/120086685#Comment_120086685

    Both batteries should charge if connected together correctly, you can set the charge time to end when you want the batteries to start supplying the power. You can get an EPS (emergency power supply) attached to the inverter to use an extension lead for small power loads in power cuts or get a change over switch and put certain loads on it to use sockets and lights. YouTube have all the videos you need to see how things are set up.

    I have a double socket beside my inverter now but waiting for a change over switch to be installed because of regular power cuts where I live.

    Don't expect anything from life, just be grateful to be alive.



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    #168
    jkforde
    Registered Users Posts: 1,991 ✭✭✭jkforde


    1. yes, the setup should be that the inverter should see both batteries as one, what does the inverter itself show on its panel for the battery? 5kwh or 10kwh? are the batteries properly linked?

    2. both batteries should act as one balanced 10kwh battery so leave the discharge time values as default in the Self Use settings.

    3. AC or DC coupled system? it can be done using the Backup port on the base of the inverter. others on here have it setup but realistically how many power cuts do we get per year? 1 or 2 around here anyhow (rural Galway).

    🌦️ 6.7kwp, 45°, SSW, mid-Galway 🌦️



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    #169
    yankinlk
    Registered Users Posts: 2,731 ✭✭✭yankinlk


    https://www.boards.ie/discussion/comment/120086685#Comment_120086685

    Are you certain it's 5kwh? or 2.5kwh each?



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    #170
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    https://www.boards.ie/discussion/comment/120086685#Comment_120086685

    I had the same issue, after monitoring for a couple days I was confident on.y 5kws of capacity was being used. Turns out there was an issue with one of the batteries being stuck in a firmware upgrade loop. Had to get onto the installer who got onto the manufacturer to do a remote reset.



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    #171
    Black_Knight
    Moderators Posts: 12,367 ✭✭✭✭Black_Knight


    So i've just got my battery installed after a few weeks of only having panels, and was able to charge it up last night (had to set the correct time on the inverter, and for some reason at 7am this morning it was discharging the battery to run the house (even though I had it set to 8am).

    Anyways, i've a 99% full battery at the moment. The house is drawing 0.439kW from what I can see in the solis app, but i'm also pulling 0.23kW from the grid. Only 0.182kW is coming from the battery (and a tiny bit from solar to make up the difference). What gives? Why isn't my battery powering the house?



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    #172
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    The Solis app updates every five minutes so it's useless at showing what's happening right this moment. You need the Shelly's you mentioned on the other thread for that.

    The over time stats for Solis will be collected continuously, in theory, but only transmitted over a fixed period.



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    #173
    Black_Knight
    Moderators Posts: 12,367 ✭✭✭✭Black_Knight


    Now it shows that i'm exporting from my battery back to the grid! What? Zappi UI confirms, 2.2kW going back to the grid from the battery



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    #174
    ELM327
    Registered Users Posts: 21,506 ✭✭✭✭ELM327


    It's a snapshot. You need to look at the inverter screen to get an accurate picture of what's happening.



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    #175
    Black_Knight
    Moderators Posts: 12,367 ✭✭✭✭Black_Knight


    https://www.boards.ie/discussion/comment/120088805#Comment_120088805

    It's an accurate snapshot though. Zappi (live view of my system) agrees that i'm sending 2kW back to the grid). Battery is draining quickly too. It's consistent.

    I set the "Allow Charge from Grid" settings on the inverter yesterday. The discharge time is from 9am to 11pm. From what I read, that's just when power is allowed to flow out of the battery. I'm guessing I need to look at the "backflow power"?

    It is very important to properly configure backflow power. Please review the article Export Power Set on how to do this. 




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    #176
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    You should not set the discharge time, only charge time. Did the installer not set this up for you? Setting the discharge time is like setting forced discharge. unset that.



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    #177
    Black_Knight
    Moderators Posts: 12,367 ✭✭✭✭Black_Knight


    https://www.boards.ie/discussion/comment/120088859#Comment_120088859

    I'll try that. No, they did not.

    I thought from this:

    https://ginlongsolis.freshdesk.com/support/solutions/articles/36000245193-11-of-20-energy-storage-operating-modes-self-use

    This determines how much power should be allowed to leave the battery during the discharge window

    That didn't sound like "we will discharge at this time"



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    #178
    Manion
    Registered Users Posts: 1,506 ✭✭✭Manion


    https://www.boards.ie/discussion/comment/120088878#Comment_120088878

    During this window, the battery will discharge power continuously at whatever rate you set it to. The system is not smart enough to vary the discharge rate to match the consumption. Therefore, it is recommended to first determine about how much power is consumed during the hours at which the battery will be discharging. This determines how much power should be allowed to leave the battery during the discharge window.

    It's right there in point 1. It's important to read the full guide not just subsections if you're messing about with any of these settings. It's basically a mode that allows you to save your battery for when you're paying the highest rate and then feed the battery into the house, any excess will be exported so you would need to vary the discharge current to minimize export. For most people you should just set the charging time.



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    #179
    Summer2020
    Registered Users Posts: 598 ✭✭✭Summer2020


    Don't set a discharge time. It was explained to me by the installer that this results in battery dumping to the grid



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    #180
    ELM327
    Registered Users Posts: 21,506 ✭✭✭✭ELM327


    https://www.boards.ie/discussion/comment/120088825#Comment_120088825

    Yes, discharge time means "Discharge to the grid at this time, regardless of what else is happening". It's not to be used, unless you are scheduling FIT/CEG dumping.

    Sounds like it's not set up correctly. You need to be in default self use mode, never set the discharge time, only set a charge time for night rate. Then the rest of the time let the inverter do its thing.



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    #181
    higster
    Registered Users Posts: 893 ✭✭✭higster


    Have asked in another chat. AM charging battery from grid 2 to 4am. Stats are showing the 5kW as Generation and Self Use on daily stats and on both monthly and daily stats page the energy imported is wrong (its seeing the 5kW as imported I think).


    See below, today a great example as real solar generation is practically zero at 0.3kW but showing 5kW as self Use and 16kW imported (where in reality its 21. Anyone know a way of correcting (have a S3 data logger)?


    image.png


    image.png




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