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The original was posted on /r/homelab by /u/TryTurningItOffAgain on 2026-03-28 15:39:31+00:00.

They both have 10ms response, same battery size. Plenty for my usage since I just need to gracefully shut down my 100w server.

EcoFlow has NUT capabilities, but I don’t have a high enough NUT server version (not yet for proxmox), so I have to use homeassistant integration, which both seem to have anyway.

I currently have the EcoFlow River 3 Plus and still within return policy, but I’ve seen the C300X on sale at costco for about $110.

EcoFlow River 3 Plus I got on sale for $200.