AECC Plug-and-Play Battery

AECC Battery brings local control of AECC-platform plug-in home batteries to Homey. It connects directly to the battery over your home network, without a cloud round-trip, and shows live charge state, power flow and energy totals in Homey, alongside the ability to set a charge or discharge target and hand control back to the battery's own logic at any time. It is built for owners of Sunpura, Lunergy, Voltdeer, AEG Solarcube, AFERIY, AccuMate, JET, Oscal, Fossibot, TSUN and other batteries that share this platform, who want their battery to show up alongside the rest of their home in Homey Energy and flows. The battery accepts only one connection at a time, so this app cannot run alongside the vendor app's local mode or a Home Assistant integration talking to the same battery at the same time. The protocol and its quirks were worked out for the sibling Home Assistant integration and are documented for anyone who wants to read further or contribute.