AC200L won't re-activate output after long power outage? I made an auto-restart device for 10$.
I keep an AC200L as emergency power source, and while not in use, it's serving as a giant UPS for my home internet setup (router, modem, unifi APs, cameras, etc.) I only realized after purchase that while it has a "UPS mode", it won't function entirely as a UPS during long power outages. After the power comes back, if the unit was entirely drained, it'll start charging again but will not turn on power output. Other devices from Bluetti do it properly, like the Elite series.
I built a tiny box with a 10$ ESP32 device to watch power, and detect if we came back from an outage and the ups is still off. If it's still off, it waits until it has a minimum state of charge (15%), and the uses Bluetooth to request it to turn back on.
Just paste your device ID in the config, flash it to a blank ESP32, and you got yourself an auto-restart. I' m sharing it here in case someone finds this useful.
https://github.com/LaurentPointCa/bluetti-ac200l-autorestart
Disclaimer: you're responsible for setting your own power devices. Be sure that if using this and auto-restart is enabled, that your attached devices will accept it. Same warning as the Elite devices have.