Grab the Guition JC3248W535 display on AliExpress — that's the only hardware you need.
A few days later your screen is in hand — no soldering, no extra parts.
Plug it in via USB using your computer and click once at www.aegisnomad.com — the firmware installs itself.
Live BMS data — charge, voltage, current, cells — right on the screen. No hub required.
Optional: stream every metric into HA over WiFi for automations, history & alerts.