What battery setup are you using for off-grid or backup systems?

I’ve been looking into different battery setups for off-grid and backup power applications recently.

It seems like LiFePO4 is becoming the standard choice, especially for longer cycle life and safety.

I’m curious — what configurations are you guys actually using in real projects?

Are you sticking with 12V/24V systems, or moving toward 48V setups?

Would love to hear your experience.