Will DFR0494 (UPS HAT for Raspberry Pi 4B) power on the Pi when power is restored?
Dr.Twox 2026-05-26 07:08:09 86 Views1 Replies There is conflicting and confusing answers to this question in other forums and discussions:
Will the DFR0494 (UPS HAT for Raspberry Pi 4B) power on the Pi automatically when power is restored in this scenario:
If the power goes out for a period of time longer than the batteries can maintain a supply to the Pi, and the device is then gracefully shutdown, will the DFR0494 power the Pi back on automatically once power is restored and the batteries have charged sufficiently?
It depends on the DFR0494 firmware version:
• V1.0: It cuts off 5V at low battery, but auto reboot is not supported.
• V1.1: It cuts off 5V below 5%, but needs a manual button press after the battery recovers to 7%, so it will not auto reboot.
• V1.2 / V1.3: It cuts off 5V below 5%. After external power returns and the battery reaches about 7%, 5V output is restored automatically, so the Raspberry Pi will boot again.
Yx 
