I am currently evaluating Wonder Watt and came across the Inverter and Battery Settings in the advanced section. In the Advanced section of Wonder watt you have a Max Inverter Rate (Charge/Discharge) and Max Battery Rate Charge/Discharge setting that you can record. Why can't you record separate values for both Charge and Discharge for Inverter and Battery rates as they can be different. My GE inverters combined Dual AIO power is 12kWh in 12kWh out. However, I have a DNO limitation Outgoing of 9.5kWh. So it occurred to me that in Wonder Watt it would be better to record both Charge and Discharge Rates and not assume one size fits all. It also occurred to me that users may want to charge / discharge more rapidly or slowly depending on a given situation. Therefore in the section where you can create schedules it would be useful if you could optionally enter charge / Discharge Rates for each schedule that you are creating. One thing to note is that if like me you have a GE dual AIO setup then when Wonder watt sends the Battery Discharge Power = xxxx command to my system this command Does Not Work. However, the Discharge Power Percentage does work. So in settings section a field to record whether the system has dual AIO's would be useful to determine which command to send depending on the system type.

> @"duplada"#p8274 Why can't you record separate values for both Charge and Discharge for Inverter and Battery rates as they can be different. My GE inverters combined Dual AIO power is 12kWh in 12kWh out. However, I have a DNO limitation Outgoing of 9.5kWh. So it occurred to me that in Wonder Watt it would be better to record both Charge and Discharge Rates and not assume one size fits all. Yeah, this has come up before and we will be implement this over the next week or so. > @"duplada"#p8274 However, the Discharge Power Percentage does work. So in settings section a field to record whether the system has dual AIO's would be useful to determine which command to send depending on the system type. Is this guaranteed to work for any dual Giv AIO combo or is this possibly a firmware issue?

Plus 1 for the separate Discharge/Charge rates [as previously discussed]

@"admin"#p8275 GivEnergy and Guaranteed in the same sentence.... Interesting concept

@"admin"#p8275 I don't know if its a bug or not but as I said Watts Value dosn't work Percentage does work on dual AIO's. I have an open support ticket ongoing at the moment on a issue so I will try to find out and let you know. and will you consider being able to specify a Charge / Discharge rate in the scheduler to speed up slow down specific schedules. I have been doing some tests and I get more out of the discharges if I run at around 50% max capacity. I just changed from Agile to Go and I cannot get IOG with the GE Charger and the MG car I own. However, If I could adjust schedule execution speeds I would be prepared to pay for that feature although 90% of Wonder Watt wouldn't be any use to me.

@"admin"#p8275 Regarding the firmware I am on the very latest not released V13 Gateway, AIO V13 BMS AO.618

@"admin"#p8275 If I explain a little bit more why being able to set a charge rate in a schedule is useful. Having a dual AIO system is good if you want to import at 12kWH and is good for sucking up lots of KWh's in a short space of time. However, it can be a curse also. I have the GE EV charger which does not support dual AIO's so All the cloud settings such as "do not drain the batteries" do not work. Therefore if you are on GO like me you start a charge on the batteries at 00:30 and charge the batteries to 100%. Now unless I go into the portal and mess with the Battery Inverter Percentage setting in addition to the Start and End Time settings, the charge will commence at 12kWh, If the EV needs charging I will fire that up which adds another which because we are already charging will take power from the grid rather than the batteries. However this adds another 7.2kWH to the load, so now with the dual AIO's running at full chat along with the EV charger I am one kettle boil away from exceeding the 80amp Gateway Limit. I have done this and the Gateway crashes, shuts down, the house power goes off, and is a nightmare to get up and running again, a full afternoons job. So I would like a schedule called EV Charging Tonight it would run from 00:30 to 05:30 and I would set The Battery Inverter Percentage to 45% this would give enough power / time to fill my batteries from 10 to 100% and give me the headroom to charge the EV without getting anywhere near the Gateway limit. The beauty of this is that all the settings get set back after the schedule completes, something I always forget to do which is always costing me money. So If you can implement this request then I will subscribe just for that feature alone as it will be worth it for me.

@"admin"#p8275 Hi, So I have an answer from Givenergy regarding the Battery Charge Power and Battery Discharge Power command. They are NOT supported on dual AIO systems. The Gateway ignores the command and does not pass it on to the AIO's it's by design and not a software bug. Therefore in your Advanced section of Wonder watt you need to ask the question is you Givenergy battery an AIO. If yes then send the Battery Charge/Discharge Percentage values in your commands instead of the Battery Charge/Discharge Power watts values. So In summary in the Advanced section of Wonder watt Record if their battery is a AIO Users can add Battery Charge/Discharge Value and also Inverter Charge/Discharge Value or Record if the user has an AIO then only record a Battery Charge/Discharge Value Add a option in Schedules to record a per schedule Charge/Discharge value that overrides the advanced value. This gives significant per schedule flexibility to control the charge/discharge rates on a schedule by schedule basis. As I said above if you can implement the above I will instantly subscribe to a full year. As It will mean I only need one utility to control my battery system. Well worth it IMO.

@"duplada"#p8293 What is your WattID (under version number in the navigation menu) please? So we can check the logs. Don't worry - think we've located you, we will look at implementing this. Anyone else with a dual AIO set up here who has noticed the same issue?

@"admin"#p8294 It's circular-strategy thanks for including the feature I look forward to it's implementation in due course thank you.

@"duplada"#p8295 The information re the command being not supported on Dual AIO's came from Paul L

Separate Charge / Discharge Settings for both Inverter and Battery + Schedules

duplada

Steve1 Steve, WW settings are telling you AIO's to perform at whatever you have set in the Advanced section which as you said is 12KWH this is for Inverter settings that charge you house batteries and nothing to do with the limit that has been set on your Gateway. WW CANNOT limit what goes through your Gateway but can limit your AIO import to and from the Grid.

Steve1

duplada Hi Duplada, this is the reply received from GE;

On both AIOs, the EVC, and the Gateway, the import limit is set to 80A. The EVC can do 32A at maximum itself so this setting wont go any higher. The API is in control of the charging of the units so this is why I think it is the API limiting their charge rate, and this looks to be related to the import to the property

duplada

Steve, you have not said what type is your EV charger. Is it the Givenergy one? If so I had trouble with mine when it was set to cloud mode. It just doesn't work, mine insisted on limiting the EV charge to 6amps. In the end GE said that the GE EV charger is NOT supported in Cloud mode with Dual AIO's, and to set as a Stand Alone charger. I also had to set the EV charger manually to charge @ 32amps in the configuration section of settings in the EV software. So it could be that your EV charger is what is limiting your charge rate not WW.

Steve1

duplada Hi Duplada, yes it is the GE EV charger - I’ll check the settings on my GE EV charger, thanks

Steve1

duplada Hi Duplada, it seems that the GE EV charger is set at 32AMPs. I have gone back to GE for a response. Will update when I have a reply. I’ll be trying to charge the EV and batteries overnight tonight - I’ll also update on how I get on

duplada

duplada Yep, this will be on the list next.

When you do find the time and I am NOT Nagging can we see if In schedule Rates can be included please. I want to go slow and easy in the free sessions for instance, but I don't want to mess with Advanced Rate as it messes up all my overnight schedules up.

admin

duplada We’ll do some work on this over the weekend, and see how we go. 😁

duplada

Steve1 Have a look in the EV charger error logs on the portal to look for any errors

duplada

@Steve1 Setup your EV charger as Standalone.

duplada

admin We’ll do some work on this over the weekend, and see how we go.

Thank you I look forward to its implementation if possible. This site is acting weird tonight my notifications have just gone to -2

KristianS

duplada Definitely on the naughty step!

duplada

Steve1 Have you got your EV charger set to Standalone as above? When I had mine set to cloud mode the API cloud server sets the EV charge power. If you set it to Standalone mode it cannot set the charge rate and goes with the 32amp set in the EV settings.

Steve1

duplada Hi Duplada, tbh I’m not 100% sure whether the GE EV charger is in cloud or standalone mode - how do I check/confirm. In discussion with my installer it is suggested that the GE Gateway has a limit of 18kWh - so in theory I should be able to charge the EV at 7kWh and also charge the batteries to 11 kWh - however, as stated previously, I seem to have a limit of 12kWh. So the question is - is this limit set by GE or WW? From what you have said it would seem to be a GE issue, but GE have not as yet accepted this

duplada

Hi Steve, if your EV charger is set to Cloud the GE Server API will attempt to control it. I know this by watching what commands were sent to the EV log file when I had it in this mode. If you set it to Standalone mode the Cloud server cannot control it and what you set in the EV settings eg 32amps gets actioned correctly. To check your mode of operation in the GE Phone App Tap Menu Top Left > EV Charger > Settings (bottom right cog) > Change EV Configuration > Set Standalone

Steve1

duplada Hi Duplada, many thanks. So following your instructions I note that the GE EV Charger is currently set to Inverter Control. If I change this to Stanalone I assume I can still schedule the charging slots through the GE APP?

duplada

Steve1 yes the only thing that changes is the GE server can't control your EV charger which is what you want.

Steve1

duplada Thanks Duplada. I’ve set the EV Charger to Standalone. I can see nothing else has changed regarding scheduling. I’ll let you know how I get on next time I charge the EV and Batteries at the same time. Thanks again

Steve1

duplada Hi Duplada, so I tried again last night to charge the EV and Batteries. I set the EV Charger to Standalone. However, I still encountered the same issue - the EV charged at 7kWh (max capacity), however, the batteries only charged at around 5kWh (when both EV and batteries should be charging at 100%). So this morning my batteries were only charged to about 60% (and not 100% as required). It seems that the 12kWh limit set in the WW APP does limit the total import from the grid. I was hoping that I could set this to 18kWh - but the maximum is 15kWh - do you know why this setting is limited to 15kWh? So, as an experiment I will set the Battery charge/discharge rate to 15kWh to see if the batteries charge at about 8kWh when the EV is charging at 7kWh.

duplada

Steve1 I was hoping that I could set this to 18kWh - but the maximum is 15kWh - do you know why this setting is limited to 15kWh?

Hi Steve no I don't know why it is limited to 15kWh in WW that is a question for @admin.

My system on the face of it is set exactly as yours is 12kWH Inverter Rate in Advanced, EV charge set to Standalone with a 32amp limit (max) and a Gateway Limit set by GE to 80amps. On my system when I set the EV and battery to charge the EV charger runs @7kWh and the house batteries charge somewhere between 8 and 12kWH depending on house load, and the amount of solar being generated. You can see this from the Graphic I posted above. The Grid Import power is pinned to about 80amps 18kWh or so. I am beginning to think that GE has set your Gateway lower than 80amps. I would trawl through your Portal logs and look for the settings that GE set your Gateway to. I would also check for any server commands that are getting set and the Power commands set by WW when you execute a charge schedule. Something is not right here its just a case of finding what it is.

Steve1

duplada Thanks again Duplada, I’ll rattle GEs cage again and see if I can get a response. Agree, something no right.

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