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

admin Yes those are the commands, I have tried those settings through the portal as at the moment Wonder Watt is setting the Invertor Power Watts setting, which does nothing on my system, so I have been setting the Percentage Charge / Discharge setting manually. However, if you set 50% for instance it is some way off the 6kWh i was expecting. I need to play with the percentages more and get a grip on what is actually going on.

admin

duplada However, if you set 50% for instance it is some way off the 6kWh i was expecting. I need to play with the percentages more and get a grip on what is actually going on.

Ah, that's interesting, let us know what you find out.

duplada

admin Yes will do

duplada

Had a hiccup with my testing last night when a schedule discharge @ 00:30 didn't appear to execute, could you let me know why that was please?

admin

duplada Looks like the conditions that were set were not met. Which is basically a combo of SOC and kWh forecast yield. The SOC was 4%....?

duplada

admin Why didn't it appear in the log?

duplada

admin My charge schedule "Part 1 Charge" @ 00:30 didn't execute and didn't appear in the logs either? Trying to understand why to correct it.

duplada

As promised the resulting values for the "Inverter Discharge Power Percentage" Command with my 9.5kWh discharge DNO limitation. I will let you have the charge percentages when I get a chance to test them.

6% 28W
10% 530W
15% = 1.06kWh
20% = 1.75kWh
25% = 2.37kWh
33% = 3.28kWh
50% = 5.36kWh
60% = 6.57kWh
70% = 7.77kWh
80% = 8.97kWh
90% = 9.38kWh
100% = 9.5kWh

admin

duplada Nothing obvious that we can tell, actually. Almost looks like it was not active at the time.

duplada

admin OK will watch it tonight and see what happens thanks

duplada

Can you tell me why sometimes the end time of a discharge slot gets adjusted by the system?

2025-08-05 01:31:25 43 % 17.7 kWh
Export to grid instruction set for 01:32 - 02:24 (adjusted).

WindyMiller

duplada This is because, based on your battery capacity and the discharge rate set in your settings, the discharge should have completed by that time. I found that sometimes the adjustment was set too early so I set my battery capacity up by 10% to compensate.

I think this adjustment was made to avoid a conflict - perhaps Admin can enlighten us?

duplada

WindyMiller Thanks that explains it. I hadn't come across it before. I look forward to the admin explanation.

admin

WindyMiller I think this adjustment was made to avoid a conflict - perhaps Admin can enlighten us?

Yeah if we leave it run, some users end up reaching this point earlier and then end up pulling from the grid for the remainder, which is undesirable. So we make a fairly simple proportional calculation as to when you will reach the target SOC based on discharge rate and time.

This does require/rely on fairly accurate SOC readings for the battery.

Kevin

Think it's down to the target SOC and expected discharge rate. They don't constantly poll the server to find your current SOC and continuously change the end time.

duplada

admin Yes, all makes perfect sense now.

My batteries SOC are anything but linear and when it gets to around 20% or lower do not give up what 20% around 50% SOC does.

duplada

I know I am like a broken record, but not being able to record an Inverter Discharge Rate, In addition to an Inverter Charge rate is a real pain for me. Unless I am charging my EV and house batteries simultaneously, I run @ full chat 24/7 in and out.

My Inverter Rate and Battery rate are 12kWh in and out, but my DNO Inverter discharge rate is limited to 9.5kWh. I am finding the limited choice in standard scheduling between 100% and Advanced (Settings rates), is a limiting factor, and not being able to record my real Inverter discharge rate for WW to make accurate time adjustments when necessary is a real pain.

Before the fix was put in place for the correct portal command for controlling Inverter / Battery power on dual AIO's I had one of the advanced rates set to 9.5kWh. That worked because the Power Command that got sent to my inverter made no difference, and WW adjusted times accurately when necessary.

So can we get a solution for this sorted please? I am not the only one asking for this feature @KristianS

admin

duplada Yep, this will be on the list next.

duplada

admin Yep, this will be on the list next.

The Discharge Power Command is Working again I will report full overnight schedule run status in the morning. Thank you once again for the excellent support and dedication.

If you now find the time to get the Separate Inverter Charge and Discharge rates in place I will be able to run fully hands off with accurate WW adjustments. Let me know when you have updated it please.

duplada

admin Yep, this will be on the list next.

So, the Inverter Rates for Discharge and Charge in Advanced and your idea of Named ("After Burner","Full Monty", "Steady Eddie"), or % Rates in Standard Scheduling. I realise this is probably a big job to implement? Is it coming soon? Just asking I know you have been very busy. 😫

duplada

Thank you great support as always

Steve1

admin Hi I have just had a 2nd AiO installed and I am on the Octopus Agile tariff. It now seems that the configured battery charging schedules on WW are no longer working.

admin

Steve1 make sure you go into Settings, Connect, then save, so we pick up your AIO gateway serial number. Should start with GW.

duplada

Steve1 Hi I have just had a 2nd AiO installed and I am on the Octopus Agile tariff. It now seems that the configured battery charging schedules on WW are no longer working.

Hi Steve1, Welcome to Dual AIO club, makes sure you use the full range of your batteries often to keep the SOC in sync otherwise you will hit problems. The trick is 100 to 4% once a week at least to stop this happening.

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