Speaking of electricity Say I have spare 500€ and I want: backup power for blackouts: ~4h @ 100w, 300ish peakoptionally <100ms switch time smart charging: charge during off peak, feed from battery during the day, but keep 4h worth of charge as backupsmart charging can be controlled by not a vendor software (reversed api/ble protocol or something)obtainable SOC, power in/out metering via software400-500w solar input. I have 5-6h of sunlit balcony, but it’s tiny and it’s kinda a gray regulation wiseit absolutely must not be able to feed back to the grid or I will have to go trough “prosumer” licensingEU delivery, preferably DEbe quiet under 100-150w load I’ve seen a lot of 1kWh #solar charging stations that more or less what I want, but it seems like smart part is cloud gated to supported countries, which my for sure is not