I do not have a smart meter that has a P1 port, but I did buy the battery when it first came out. I missed the fact that it needed a P1 Meter. I am eagerly waiting for a way to use the battery without the use of a P1 Meter. I do have the Home Assistant KWH meter installed. And my house is fully controlled by Home Assistant. Therefor having a capability to just be able to change the battery into a state of Charging, Discharging or Idle would be an absolute help!
We work (hard) to get the kWh Meter to work with the batteries. If you wish you can sign up for the beta got get early access and help with testing. You can fill in this form and mention that you want to do this for the kWh meter-beta.
Great!! Thank you Duco. I have filled in the form for my battery and the kWh meter. Looking forward to be a beta tester.
What I would like to do is to couple the battery to e.g. Tibber (or other price info), set the battery to load on the moments with the lowest prices (eventually with a delay in order to synchronize with other hardware). Where the battery switches to āavailableā power until there are negative prices. Then it should be possible to set/limit the loading current up to maximum.
For unloading it would be great if you can unload the battery in the highest priced times, were the current can be set and also the minimum capacity that shall be available for the rest of the night.
So basically some kind of schedule were you can switch between modes, based on the price info.
Great work already Duco, battery has a great form factor and is very well made, installed gives me already a wealth of sensors:
I see that looking at the Power sensor, when it drops in the - (minus) i can assume discharging and + number show charging. off course I can create sensors myself, but maybe itās an idea to show a charging/discharging sensor.
Most of the other stuff like daily energy provided can be calculated via Utility meter sensors for available data.
I would really really love to do some automation on it, I now have the āzero statusā enabled which is great already and quite sufficient for standard use.
I would like to have a manual mode toggle, and control on/of over charging/discharging (Maybe even i would like to control the amount of watts output 0-800W max.
That way I could decide when itās the best moment for my situation to start/stop and to have control how much watt is supplied.
f.i.
I have a dynamic contract, pricing in summer is often near 0, I donāt want the battery to start discharging during day(any)time when pricing is low. I want to get the best out of the battery and donāt want it to cycle a charge cycle when it has no use at all (it even more sustainable to extend battery life).
No I can start shutting the battery down via a solid state relays and constantly power it off and on, but that seems a bad idea for the electronics.
Maybe something which you can activate under advanced features, I think Home wizard would gain a lot if users start to actively share how they automate the power usage and build some of those profiles into the firmware.
Just my first 0.5 cents,
best regards
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I completely forgot to mention this, but we have a public API in beta that enables mode control for the batteries: P1 Meter firmware 6.0201 has been released as beta Ā· homewizard/beta Ā· Discussion #9 Ā· GitHub. This feature was also added based on feedback from this thread, so thank you for that!
Currently, we are unable to provide full control of the output due to legal and safety regulations. However, we hope that the āmodeā API will allow us to cover most scenarios. We are all ears for other modes, one of which is a ācharge-onlyā or ādischarge-onlyā mode (which is not available in this beta).
Thanks!, itās not completly clear can you give pointer to get the beta firmware installed? In the other topic I did the ānormalā three dot method, but there are no updates. version is on 1.0106
Good question!
- Sign up here: GitHub - homewizard/beta: HomeWizard Beta-software Announcement Channel
- Wait until your registration has been processed, this can take up to a week.
- Update your P1 Meter to the latest firmware.
Hi Duco,
I have 2 HW Batteries, a gas central heating (CV) and 2 Daikin ACs.
Have the batteries since end Feb, and usually they were drained in the morning well before the Solar panels start to produce.
Now in May, days are longer but nights still cold, the evening cooking is more directly from the Solar panels i.o. from the batteries
and in the morning I sometimes have 10% left in them at the time the Solar panels produce more than is consumed.
Meanwhile the CV starts up early in the morning.
As for what to use the HA to HW integration for:
Long story short: I was thinking to use the left battery power to start a AC to heat up the house for an hour or so, conserving gas and fully using the batteries.
Regards, Martux
@DCSBL
Interesting product.
Just a general question, I already have a P1 sensor in my HA, is it possible to keep on using that one?
I have the same question as @aceindy. Iām currently using the DSMR smart meter integration and I have my P1 port directly connected to the server running home assistant. It would be great if I wouldnāt need to replace that to be able to use the HW battery.
@adez We probably get the advise to buy the HomeWizard P1 splitter (ā¬27.95) together with the HomeWizard P1 meter (ā¬24.95)ā¦
But that would be overkill, as that makes our DSMR meter redundant (as HomeWizards P1 meter is also compatible with HA)
Not really the answer i was waiting for, but good marketing 
@aceindy Suppose you are right, then I will not buy this HW Plug-in Battery, because I have also a P1 sensor already.
This is such a cool system and fits exactly my needs for something that isnāt locked to a cloud. Itās such a shame it depends on this P1 dongle that i canāt use. Are there plans to add compatibility with something like a Shelly 3em? The other big brands for such systems out there do support it.