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Solis Hybrid - charge battery using Night rate

jkforde

I've a Solis hybrid 5G in a DC-coupled system (PylonTech 2.4kW).. and I've just signed up to a D\N meter, so been wondering how (if possible) to configure the inverter so that it charges the battery at specific periods during the night. I know how to get into the Adv settings and the Storage Energy Set > Self Use menu.. latest firmware has multiple time periods available.

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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.

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)
Can both batteries discharge as required from 8am - 11pm during the day to maximise gain?
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.

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

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?

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.

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.

[Deleted User]

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.

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😂

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.

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?

Jonathan

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

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

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?

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.

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.

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.

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?

shareboy

Hi all

I've Solis hybrid inverter with 3.5kw pylontec battery.

I have my inverter set up for self use with Time of Use disable/stop.

At present my battery is charging from the pv panels and in turn discharged to the house. All good until bad weather days like today when generation is poor my battery force charges from the grid at 15% then goes on to discharge again to the house until it reaches 15%.

My question is can I set my inverter to just charge the battery from pv and not charge the battery from the grid? There is an option to not allow charging from grid but concerned that it will fall under 15% charge.

I only have a standard meter so no night rate avaible yet so hence the enquiry.

Any help would be greatly appreciated.

ELM327

https://www.boards.ie/discussion/comment/119640546#Comment_119640546

https://www.youtube.com/watch?v=NVIGEm74-UU

connesha

Apparently - I saw this on youtube - if you don't switch the inverter to off in the advanced settings, the settings changes for amp limits etc doesnt save!

Link please

ELM327

Sorry, I read 6G as 6kw!

I hadnt changed the battery voltage but I checked in the battery settings and they all match what's above, including the name being preselected.

I'm also being quite the fool. Apparently - I saw this on youtube - if you don't switch the inverter to off in the advanced settings, the settings changes for amp limits etc doesnt save!

connesha

https://www.boards.ie/discussion/comment/119638063#Comment_119638063

typo, yea, 5G

SD_DRACULA

https://www.boards.ie/discussion/comment/119637833#Comment_119637833

I have the 5G one so not sure about 6G, thought that wasn't out yet?

Did you also set up the manual values below as Dyness suggested?

Floating:55.5V

Overvoltage:56.75V

Undervoltage:43~45V

Battery select: Dyness LV

Assuming you have B51100s

ELM327

Yes that;s the exact same one.

To be honest I'm considering not doing that, and instead considering the 50A limit as a protector/mitigant for battery degradation.

connesha

@ELM327 , are you on solis 6kw hybrid 5g? And if I understand correctly, you can only get 50A in/out of battery?

If so, I've the same inverter, and am "stuck" at 65A limit.

I've a ticket opened for it with Solis, and am getting some responses this morning.

Maybe it'll useful to open a ticket too, if you haven't already? (at least they'll then see a couple of instances of a similar issue...). here is the link https://solis-service.solisinverters.com/support/tickets/new

In my case so far, they changed the FW to 3D002A this morning, but that has not resolved the issue. Lets see whats next...

SD_DRACULA

https://www.boards.ie/discussion/comment/119636862#Comment_119636862

I'd say get onto Solis and have them either update your FW or see if they can force the 100a values remotely.

The FW update fixed this exact issue for me back when I had the puredrive battery installed.

I'm running 4x dyness at the moment without any issues on my 6kwh solis hybrid on FW version: 3A0029

ELM327

I did a lot of fiddling and got it back to "auto" mode. But it seems that after a split second going above 50A, it resets back. Even after resetting everything. If it were an EV and a charger I'd say something was throttling the charge rate.

Anyway, I'll just mitigate as best as possible, maybe get a second inverter and some more batteries.

SD_DRACULA

Do you have the possibility to try and set those values remotely via modbus/python? See if it makes a difference?

Tried powering off the inverter completely?

And reset the batteries too?

ELM327

And it seems stuck on "Grid - off grid" despite me switching between "self use" and "backup" modes. It even says self use in the menu but on the main display it shows grid off grid but the grid is powering the house. I'm sending 2.5kW to the batteries but pulling 600-3000w to the house. Makes no sense.

ELM327

Yes battery (4*dyness) supports 100a. It seems to be throttling by the inverter.

However no changes I make seem to get saved. I've tried even switching off the input. Is there a "factory reset" anywhere?

SD_DRACULA

https://www.boards.ie/discussion/comment/119625408#Comment_119625408

Does the battery support more than 50a?

And remember the lies told to us by solis, it will only do 100a for 15 mins then derates to about 70a.

I actually had this issue in the past where it just started forcing 50a no matter what I set, solution was for solis to update the inverter firmware

ELM327

So it seems like I'm unable to change the 50A charge/discharge setting. We're generating over 4kW this morning but still exporting to the grid. I change the settings shown but they dont seem to save?