Tass99

No problem - enjoy! There are all sorts of cool automations you can do with pretty simple scripting - I found loads of examples online (and ChatGPT was useful too ;-)). Monitoring battery SOC, voltage levels, error codes, on-grid/off-grid status, etc. Sending out notifications to the Home Assistant app on your phone is built in as an action, which I found useful.

Post lost, but let's try again. I've got the same setup, and very happy with the integration. If you've got the Goodwe interface installed, can you see the integration? (Settings > Devices & Services). You should see the Goodwe integration listed there. If you click on that, it'll give you a list of all entities to use, and show you what value your inverter is currently outputting for each entity. This can help you figure out which entity matches up to with value. But - high level: 1 & 2 - you can use sensor.on_grid_export_power for both of these - it'll be either positive or negative 3 - For solar production you can use senser.pv_power, or sensor.pv1_power & sensor.pv2_power if you have multiple strings 4 - All my battery stats are available via the goodwe interface, but that might dependent on the battery type and BMS (I've got pylontech). Try sensor.battery_state_of_charge and sensor.battery_power, etc. As for cards - just a few simple gauges and graphs go a long way! Lots you can do around monitoring and notifications too.

OK, thanks. Haven't seen it yet - I'll take a look

Excellent - thanks very much! I'll take a read through that, but you've been a great help.

Thanks. So any need to do a discharge from time to time?

OK - thanks. My DB board has been split out, so I normally sit at about 1.1kW during loadshedding on a normal evening, heading down to 700W overnight. The system has tripped a few times when I've used heaters recently, and that's when it pushes up over 1.6kW (config in the inverter to automatically do that, of some sort of protection in the BMS?). For now I'm happy to keep my load below 1.5kW, and should loadshedding ramp up a lot over the next few years I could always add more batteries to make that more manageable. When using my battery at night I get a pretty steady discharge of 1.4 (until that last little 20-30%, which has an annoying drop, even though the load doesn't change). My general feeling is I need to sit at 5%, switching to 80% every few months now and again. There doesn't seem to be any official guidance on this though.

Good afternoon I'm looking for some advice on best practice for properly maintaining a Pylontech US3000 3.5kWh battery. I have a Goodwe 4.6kW hybrid inverter, 18 x 330W JA panels and the 1 Pylontech battery. I've had a lot of people tell me that I should purchase more batteries for the size of my system, to make the system more cost effective, but I'm in a rather unique situation. I'll explain below, but essentially I don't want to know what will most cost effective - I want to know what's best for the battery. I'm waiting for the CoCT to sign off on my installation, and have been for about 18 months now (Covid's delayed that, somewhat). I'm not sure what the holdup is, but at this point I don't really care. I have the old-style meter with the disc that spins, and when I generate more than I consume it just spins backwards, essentially giving me "credit". I therefore don't need to use the battery for financial benefit - I simply need it during loadshedding, to ensure my inverter stays running. There's no benefit to me charging the battery using solar and then using it at night when I can simply feed back into the grid at the same rather I'm charged. My question relates to the best approach to properly maintaining my battery. Currently I have DoD set to 5% (which I believe is the minimum). My battery stays at 100% all day, before dipping down to 95% in the late afternoon, then charging again first thing in the morning. During a recent bout of loadshedding it dropped down to 20%, and I noticed that the drop from 35% to 20% was very fast - about 3 minutes. This led me to believe the battery wasn't calibrated properly. I set the D0D to 80%, and have watched the battery drain for the last week, and it seems better now (although from 30-20% seems to drain slightly faster than the rest). So - on to my actual question. How should I configure the battery, to get maximum life out of it? A ) Leave DOD at 5%, and only use the full battery when absolutely necessary B ) Set DOD to 80% and use it every day C ) Leave it at 5%, setting to 80% a few times a year to give it a few full cycles And a final tangent question - is 80% the correct DOD to set, or should I consider other options? Thanks in advance.