Hey there, I don't know if it's the good place to ask this, but I'm new in the ROM's World, and I would like to know for you, what is the best custom ROM to increase battery life ? My device is a Poco X3 NFC (Surya).
There is a bunch of great ROMs and i think you have to try them by yourself to get an idea of the most suitable ROM for you.
For me i can suggest you PixelExperience and ArrowOS but you can give a try to other ROMs.
Here is a telegram channel for all POCO X3 ROMs and Kernels : ┤Mod Edit├┤Telegram link removed as it does not meet posting requirements├