• General

  • Release 363 - Octopus Agile window 'hold charge' functionality

I used the hold feature last night between 3 charge slots. The log on ww shows the hold command but the house was still drawing from the battery apart from during a few random minutes.

    Just signed up to WW and tried out the hold feature last night. Didn't seem to work.
    Will post screenshots later but have to pop out right now.

      johalareewi We'll have a look through the logs. What is your WattID? (You can find it in the Advanced section)

      And the Giv logs would be useful too, please.

          Mat It looks like it's working, this may have to do with the way we implemented 'hold charge'.

          We're simply setting the charge target percentage to current SOC. And it does look that there are still some fluctuations going on, but on the whole, it looks like the battery stays at or around the SOC.

          This mechanism works quite well on Growatt, but for Giv, it may be better to effectively reduce the discharge power to 0 during a hold-charge slot.

          • Mat replied to this.

              admin so what you're saying is that because my nighttime usage is low, the battery is still trickling? Max load is around 200w ish. There's always something on though as I have a ventilation system running although there's less than 40w from what I remember. The test would be to do washing or something during the night and see what the battery does?

                  Mat The test is, does your battery get to the end of the hold period on the state of SOC as it was? Not whether it may well charge and discharge little bits.

                  But maybe we should explore 'pausing' the battery and reducing discharge rate to 0 if we can.

                      That does explain the strange fluctuations during the longer hold periods.

                      Battery would kick in and out at 'random' intervals.

                      That isn't a problem for my normal use but tonight the EV will be charging so I will see if the hold feature preserves the GE battery and forces the EV to charge from the grid during the hold periods.

                      admin neighboring-volume

                      What data do you want to see from the GE inverter logs?

                          johalareewi Just wanted to see we sent the right instructions really. But it looks like we did from your graph, so thanks for that.

                          Yeah, would be interesting to see how the instruction to keep SOC at the current percentage will deal with the EV charging.

                            admin But maybe we should explore 'pausing' the battery and reducing discharge rate to 0 if we can.

                            The GE mobile app has a quick button to stop battery charge/discharge.
                            Guess this sends a command to the inverter so it should be available to wonderwatt via the API.
                            GE quick buttons allow
                            Force battery charge
                            Force battery discharge
                            Pause battery
                            Play (restore normal use)

                                admin Will do.

                                Another option could be to drop the desired SOC to a lower value than current SOC and leave the system on charge.
                                If I set the GE inverter to charge to xx%, when the SOC reaches it, the inverter puts the battery on hold until the end of the charge period.

                                Here is an example. The charge period is 01:00 to 06:30 to 100%. When battery reaches required SOC, it gets paused. Charge period is still active so inverter doesn't start using the battery until the end of the charge period.

                                    johalareewi Hmm, that's kind of what we're aiming to do. But perhaps setting to current SOC doesn't quite achieve that?

                                    Also, not sure whether this works with all Giv inverters in the same way?

                                      admin I assumed the battery was in total hold mode during hold periods domg nowt until the next charge period or the end of the schedule is reached.

                                        admin Can you Pause and then Play again a minute later and send us the Giv logs please when you have a moment?

                                        Here goes. Battery was charging. I did a pasue on the app and battery stopped charging (and discharging). Then did Play to resume everything. Is this what you want from the inverter log?

                                            johalareewi Ace, thanks for that - I think it makes sense to change our 'on hold' to effectively do the same for Giv.

                                            We'll run some tests and get a patch out.

                                              admin Where on the Giv app do you see the quick Pause and Play buttons?

                                              Big round green button at the bottom.

                                                  For Giv users, the hold-charge has now been switched out for actual battery pause functionality. Just deployed, version 380.