bluetooth

• 2026-11-02
  The UPS said 2 minutes at 95 %

  A UPS monitor took the minimum of three runtime estimates and raised low battery at 95 %. One of them was the station's time to full charge.

  Power Stations as a UPS · 11/12 6 min read
• 2026-11-02
  The DJI went silent for four hours

  A DJI Power 2000 stopped advertising over Bluetooth while the monitor served its last reading as live. Then the observer revived its own four-hour-old state.

  Power Stations as a UPS · 10/12 8 min read
• 2026-10-15
  The DJI's grid flag is labeled charge type

  A DJI Power 2000 over plaintext BLE: the documented grid byte never changed, input watts read 0 on grid, and the link drops were a 420 ms timeout.

  Power Stations as a UPS · 4/12 11 min read
• 2026-10-14
  Secure session ready. Battery: ?

  Porting an encrypted BLE handshake from Python to an ESP32-S3: every step reported success, and the reads came back empty. The station sends its key twice.

  Power Stations as a UPS · 2/12 12 min read
• 2026-10-14
  The power went out twice. My UPS log saw it once.

  Monitoring a BLUETTI AC180 used as a home UPS from Linux over encrypted BLE: no account needed, but polling misses short outages and input watts lie.

  Power Stations as a UPS · 1/12 10 min read