The better approach (if you have EE skills) is to build your own UPS with LiFePO4 batteries, a proper BMS, and a bunch of USB-C PD ports. Skip the lossy inverter entirely and pick equipment that runs on USB-C PD directly.
I don't know why nobody sells these as COTS yet.
Or buy equipment targeting alirack compatibility, i.e., with 240V PSUs that are minimal effort designed to also specifically work on the appropriate DC voltage so that Alibaba, the alirack standard's originator, could delete the inverter from their UPS and feed PV MPPTs directly into the batteries.