Accessory to trigger automations based on battery level

[langabi]

Posting as issue in case I'm missing something obvious here.

I'm trying to trigger automations based on Powerwall battery level, e.g., when battery over 95% full, turn on pool heating so as not to waste excess power.

However, I'm struggling to do this with any of the current accessories:

• the "Battery" accessory shows in homebridge, but is listed as "unsupported" in Home app, and doesn't show in Eve as an accessory with current charge level (not sure why)
• the "Lightbulb" accessory (where brightness is the current battery level) does show up, but the Home app doesn't allow automations based on this, and the Eve app can only do automations where the power (charge) "equals" something, not "equal or greater"
• "Battery History" weather service accessory shows well in Eve, and the temperature characteristic works great, except: seems that Eve doesn't allow conditions on temperature for temperature great than 85degC. So I can't create rules for >=93%, only >=85%. And the hue characteristic doesn't allow "greater or equal", only equal.

So my next steps are:

• modified the Lightbulb accessory to have saturation also set by battery charge level, and I've created Eve triggers using this, but so far they're not triggering, not sure why
• considering creating another "Battery History" weather service accessory, where I divide power by 2 to set temperature (ie. 50degC would be 100% charge)

Before I do that ... is there anything obvious I'm missing? Thanks!

[datMaffin]

That the battery display is not supported does sound weird to me.
In the past the battery percentage was bundled in with the switch that displays whether the Powerwall is working.

I might look into this in the near future, as having logic depending on the battery state seems like an obvious thing that should be possible.

[langabi]

Ok great, yes that would be good! I see that on my home app, a battery accessory, but it says "This accessory is not currently supported by the Home app." - so yes, does indeed sound like there's an issue. I'll see if I can work out anything.